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| author |  jhmaster <32803471+jhmaster2000@users.noreply.github.com>
| 2023-09-28 03:51:49 -0300 |
|---|---|---|
| committer |  GitHub <noreply@github.com>
| 2023-09-27 23:51:49 -0700 |
| commit | e60b3607c12c91959ec795228cc299703d5b09d0 (patch) | |
| tree | 2b4e8115501077adef7dc5d35a3627cc588ae63a /test/js | |
| parent | 31d96a1b7f8a72a1976bee92e6c3f08faade8c31 (diff) | |
| download | bun-e60b3607c12c91959ec795228cc299703d5b09d0.tar.gz bun-e60b3607c12c91959ec795228cc299703d5b09d0.tar.zst bun-e60b3607c12c91959ec795228cc299703d5b09d0.zip | |
Complete rework of the majority of `node:util`, primarily `util.inspect` (#4493)
* 1st revision of new util.inspect impl. (not done)
* fix util.types.isArrayBuffer
* fix some utl tests and bugs
* fix node:tty missing primordials
* fix utl stackoverflow handling & some tests
* narrow down diff. context test
* util.inspect indirect circulars optimization
* temp workaround for buggy is...Function checks
* impl. Map/Set/Iterator entries inspection
* fix bigint & symbol objects inspection
* error inspection fixes
* misc util tests stuff
* inline getExternalValue stub
* leftovers
* util.inspect promise internals
* run bun fmt
* commit make js changes
* cut out unnecessary utl files
* reorganize utl folder structure
* remove browserify buffer check
* Try to revert git messing up uws somehow
This reverts commit 2c27e16e7d361657b9c3a7dc7892117cf31e15ee.
* commit src/js/out files again
* redo this edit too
* refresh js/out files
* Removed uws submodule
* tidy up
* unused primordials
* run fmt
---------
Co-authored-by: dave caruso <me@paperdave.net>
Diffstat (limited to 'test/js')
8 files changed, 4114 insertions, 1 deletions
diff --git a/test/js/bun/util/reportError.test.ts b/test/js/bun/util/reportError.test.ts index 98b77d9c7..3a8837e89 100644 --- a/test/js/bun/util/reportError.test.ts +++ b/test/js/bun/util/reportError.test.ts @@ -2,7 +2,7 @@ import { test, expect } from "bun:test"; import { spawnSync } from "bun"; import { bunEnv, bunExe } from "harness"; -test("reportError", () => { +test.skipIf(Bun.version.endsWith("debug"))("reportError", () => { const cwd = import.meta.dir; const { stderr } = spawnSync({ cmd: [bunExe(), new URL("./reportError.ts", import.meta.url).pathname], diff --git a/test/js/node/util/node-inspect-tests/import.test.mjs b/test/js/node/util/node-inspect-tests/import.test.mjs new file mode 100644 index 000000000..a49902f53 --- /dev/null +++ b/test/js/node/util/node-inspect-tests/import.test.mjs @@ -0,0 +1,9 @@ +import assert from "assert"; +import util, { inspect } from "util"; + +test("no assertion failures", () => { + assert.strictEqual(typeof util.inspect, "function"); + assert.strictEqual(util.inspect, inspect); + assert.strictEqual(util.inspect(null), "null"); + assert.strictEqual(util.inspect({ a: 1 }, { compact: false }), "{\n a: 1\n}"); +}); diff --git a/test/js/node/util/node-inspect-tests/internal-inspect.test.js b/test/js/node/util/node-inspect-tests/internal-inspect.test.js new file mode 100644 index 000000000..6e7a76e0d --- /dev/null +++ b/test/js/node/util/node-inspect-tests/internal-inspect.test.js @@ -0,0 +1,57 @@ +import assert from "assert"; +import util from "util"; + +test("no assertion failures", () => { + // Errors in accessors are not triggered + const obj = new Proxy( + { x: 5 }, + { + get() { + throw new Error("Error message"); + }, + }, + ); + assert.strictEqual(util.format(obj), "{ x: 5 }"); + + assert.strictEqual(util.formatWithOptions({ numericSeparator: true }, "%d", 4000), "4_000"); + + const a = {}; + a.b = a; + assert.strictEqual(util.inspect(a, { compact: false }), "<ref *1> {\n b: [Circular *1]\n}"); + assert.strictEqual(util.inspect(a, { compact: true }), "<ref *1> { b: [Circular *1] }"); + + const cause = new Error("cause"); + const e2 = new Error("wrapper", { cause }); + assert.match(util.inspect(e2), /\[cause\]: Error: cause\n/); +}); + +//! non-standard property, should this be kept? +test.skip("util.stylizeWithHTML", () => { + assert.strictEqual( + util.inspect( + { + a: 1, + b: "<p>\xA0\u{1F4A9}</p>", + "<": NaN, + [Symbol("<br>")]: false, + buf: new Uint8Array([1, 2, 3, 4]), + }, + { + compact: false, + stylize: util.stylizeWithHTML, + }, + ), + "{\n" + + ' a: <span style="color:yellow;">1</span>,\n' + + ' b: <span style="color:green;">'<p> \u{1F4A9}</p>'</span>,\n' + + ' <span style="color:green;">'&lt;'</span>: <span style="color:yellow;">NaN</span>,\n' + + " buf: Uint8Array(4) [\n" + + ' <span style="color:yellow;">1</span>,\n' + + ' <span style="color:yellow;">2</span>,\n' + + ' <span style="color:yellow;">3</span>,\n' + + ' <span style="color:yellow;">4</span>\n' + + " ],\n" + + ' [<span style="color:green;">Symbol(<br>)</span>]: <span style="color:yellow;">false</span>\n' + + "}", + ); +}); diff --git a/test/js/node/util/node-inspect-tests/parallel/util-format.test.js b/test/js/node/util/node-inspect-tests/parallel/util-format.test.js new file mode 100644 index 000000000..045671cf7 --- /dev/null +++ b/test/js/node/util/node-inspect-tests/parallel/util-format.test.js @@ -0,0 +1,489 @@ +// Copyright Joyent, Inc. and other Node contributors. +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to permit +// persons to whom the Software is furnished to do so, subject to the +// following conditions: +// +// The above copyright notice and this permission notice shall be included +// in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN +// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR +// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE +// USE OR OTHER DEALINGS IN THE SOFTWARE. + +import assert from "assert"; +import util from "util"; +const symbol = Symbol("foo"); + +test("no assertion failures", () => { + assert.strictEqual(util.format(), ""); + assert.strictEqual(util.format(""), ""); + assert.strictEqual(util.format([]), "[]"); + assert.strictEqual(util.format([0]), "[ 0 ]"); + assert.strictEqual(util.format({}), "{}"); + assert.strictEqual(util.format({ foo: 42 }), "{ foo: 42 }"); + assert.strictEqual(util.format(null), "null"); + assert.strictEqual(util.format(true), "true"); + assert.strictEqual(util.format(false), "false"); + assert.strictEqual(util.format("test"), "test"); + + // CHECKME this is for console.log() compatibility - but is it *right*? + assert.strictEqual(util.format("foo", "bar", "baz"), "foo bar baz"); + + // ES6 Symbol handling + assert.strictEqual(util.format(symbol), "Symbol(foo)"); + assert.strictEqual(util.format("foo", symbol), "foo Symbol(foo)"); + assert.strictEqual(util.format("%s", symbol), "Symbol(foo)"); + assert.strictEqual(util.format("%j", symbol), "undefined"); + + // Number format specifier + assert.strictEqual(util.format("%d"), "%d"); + assert.strictEqual(util.format("%d", 42.0), "42"); + assert.strictEqual(util.format("%d", 42), "42"); + assert.strictEqual(util.format("%d", "42"), "42"); + assert.strictEqual(util.format("%d", "42.0"), "42"); + assert.strictEqual(util.format("%d", 1.5), "1.5"); + assert.strictEqual(util.format("%d", -0.5), "-0.5"); + assert.strictEqual(util.format("%d", -0.0), "-0"); + assert.strictEqual(util.format("%d", ""), "0"); + assert.strictEqual(util.format("%d", " -0.000"), "-0"); + assert.strictEqual(util.format("%d", Symbol()), "NaN"); + assert.strictEqual(util.format("%d", Infinity), "Infinity"); + assert.strictEqual(util.format("%d", -Infinity), "-Infinity"); + assert.strictEqual(util.format("%d %d", 42, 43), "42 43"); + assert.strictEqual(util.format("%d %d", 42), "42 %d"); + assert.strictEqual(util.format("%d", 1180591620717411303424), "1.1805916207174113e+21"); + assert.strictEqual(util.format("%d", 1180591620717411303424n), "1180591620717411303424n"); + assert.strictEqual( + util.format("%d %d", 1180591620717411303424n, 12345678901234567890123n), + "1180591620717411303424n 12345678901234567890123n", + ); + + { + const { numericSeparator } = util.inspect.defaultOptions; + util.inspect.defaultOptions.numericSeparator = true; + + assert.strictEqual(util.format("%d", 1180591620717411303424), "1.1805916207174113e+21"); + + assert.strictEqual( + util.format("%d %s %i", 118059162071741130342, 118059162071741130342, 123_123_123), + "118_059_162_071_741_140_000 118_059_162_071_741_140_000 123_123_123", + ); + + assert.strictEqual( + util.format("%d %s", 1_180_591_620_717_411_303_424n, 12_345_678_901_234_567_890_123n), + "1_180_591_620_717_411_303_424n 12_345_678_901_234_567_890_123n", + ); + + assert.strictEqual(util.format("%i", 1_180_591_620_717_411_303_424n), "1_180_591_620_717_411_303_424n"); + + util.inspect.defaultOptions.numericSeparator = numericSeparator; + } + // Integer format specifier + assert.strictEqual(util.format("%i"), "%i"); + assert.strictEqual(util.format("%i", 42.0), "42"); + assert.strictEqual(util.format("%i", 42), "42"); + assert.strictEqual(util.format("%i", "42"), "42"); + assert.strictEqual(util.format("%i", "42.0"), "42"); + assert.strictEqual(util.format("%i", 1.5), "1"); + assert.strictEqual(util.format("%i", -0.5), "-0"); + assert.strictEqual(util.format("%i", ""), "NaN"); + assert.strictEqual(util.format("%i", Infinity), "NaN"); + assert.strictEqual(util.format("%i", -Infinity), "NaN"); + assert.strictEqual(util.format("%i", Symbol()), "NaN"); + assert.strictEqual(util.format("%i %i", 42, 43), "42 43"); + assert.strictEqual(util.format("%i %i", 42), "42 %i"); + assert.strictEqual(util.format("%i", 1180591620717411303424), "1"); + assert.strictEqual(util.format("%i", 1180591620717411303424n), "1180591620717411303424n"); + assert.strictEqual( + util.format("%i %i", 1180591620717411303424n, 12345678901234567890123n), + "1180591620717411303424n 12345678901234567890123n", + ); + + assert.strictEqual( + util.format("%d %i", 1180591620717411303424n, 12345678901234567890123n), + "1180591620717411303424n 12345678901234567890123n", + ); + + assert.strictEqual( + util.format("%i %d", 1180591620717411303424n, 12345678901234567890123n), + "1180591620717411303424n 12345678901234567890123n", + ); + + assert.strictEqual( + util.formatWithOptions({ numericSeparator: true }, "%i %d", 1180591620717411303424n, 12345678901234567890123n), + "1_180_591_620_717_411_303_424n 12_345_678_901_234_567_890_123n", + ); + + // Float format specifier + assert.strictEqual(util.format("%f"), "%f"); + assert.strictEqual(util.format("%f", 42.0), "42"); + assert.strictEqual(util.format("%f", 42), "42"); + assert.strictEqual(util.format("%f", "42"), "42"); + assert.strictEqual(util.format("%f", "-0.0"), "-0"); + assert.strictEqual(util.format("%f", "42.0"), "42"); + assert.strictEqual(util.format("%f", 1.5), "1.5"); + assert.strictEqual(util.format("%f", -0.5), "-0.5"); + assert.strictEqual(util.format("%f", Math.PI), "3.141592653589793"); + assert.strictEqual(util.format("%f", ""), "NaN"); + assert.strictEqual(util.format("%f", Symbol("foo")), "NaN"); + assert.strictEqual(util.format("%f", 5n), "5"); + assert.strictEqual(util.format("%f", Infinity), "Infinity"); + assert.strictEqual(util.format("%f", -Infinity), "-Infinity"); + assert.strictEqual(util.format("%f %f", 42, 43), "42 43"); + assert.strictEqual(util.format("%f %f", 42), "42 %f"); + + // String format specifier + assert.strictEqual(util.format("%s"), "%s"); + assert.strictEqual(util.format("%s", undefined), "undefined"); + assert.strictEqual(util.format("%s", null), "null"); + assert.strictEqual(util.format("%s", "foo"), "foo"); + assert.strictEqual(util.format("%s", 42), "42"); + assert.strictEqual(util.format("%s", "42"), "42"); + assert.strictEqual(util.format("%s", -0), "-0"); + assert.strictEqual(util.format("%s", "-0.0"), "-0.0"); + assert.strictEqual(util.format("%s %s", 42, 43), "42 43"); + assert.strictEqual(util.format("%s %s", 42), "42 %s"); + assert.strictEqual(util.format("%s", 42n), "42n"); + assert.strictEqual(util.format("%s", Symbol("foo")), "Symbol(foo)"); + assert.strictEqual(util.format("%s", true), "true"); + assert.strictEqual(util.format("%s", { a: [1, 2, 3] }), "{ a: [Array] }"); + assert.strictEqual( + util.format("%s", { + toString() { + return "Foo"; + }, + }), + "Foo", + ); + assert.strictEqual(util.format("%s", { toString: 5 }), "{ toString: 5 }"); + assert.strictEqual( + util.format("%s", () => 5), + "() => 5", + ); + assert.strictEqual(util.format("%s", Infinity), "Infinity"); + assert.strictEqual(util.format("%s", -Infinity), "-Infinity"); + + // String format specifier including `toString` properties on the prototype. + { + class Foo { + toString() { + return "Bar"; + } + } + assert.strictEqual(util.format("%s", new Foo()), "Bar"); + // TODO: null prototypes + // assert.strictEqual( + // util.format('%s', Object.setPrototypeOf(new Foo(), null)), + // '[Foo: null prototype] {}' + // ); + global.Foo = Foo; + assert.strictEqual(util.format("%s", new Foo()), "Bar"); + delete global.Foo; + class Bar { + abc = true; + } + assert.strictEqual(util.format("%s", new Bar()), "Bar { abc: true }"); + class Foobar extends Array { + aaa = true; + } + assert.strictEqual(util.format("%s", new Foobar(5)), "Foobar(5) [ <5 empty items>, aaa: true ]"); + + // Subclassing: + class B extends Foo {} + + function C() {} + C.prototype.toString = function () { + return "Custom"; + }; + + function D() { + C.call(this); + } + D.prototype = { __proto__: C.prototype }; + + assert.strictEqual(util.format("%s", new B()), "Bar"); + assert.strictEqual(util.format("%s", new C()), "Custom"); + assert.strictEqual(util.format("%s", new D()), "Custom"); + + D.prototype.constructor = D; + assert.strictEqual(util.format("%s", new D()), "Custom"); + + D.prototype.constructor = null; + assert.strictEqual(util.format("%s", new D()), "Custom"); + + D.prototype.constructor = { name: "Foobar" }; + assert.strictEqual(util.format("%s", new D()), "Custom"); + + Object.defineProperty(D.prototype, "constructor", { + get() { + throw new Error(); + }, + configurable: true, + }); + assert.strictEqual(util.format("%s", new D()), "Custom"); + + assert.strictEqual(util.format("%s", { __proto__: null }), "[Object: null prototype] {}"); + } + + // JSON format specifier + assert.strictEqual(util.format("%j"), "%j"); + assert.strictEqual(util.format("%j", 42), "42"); + assert.strictEqual(util.format("%j", "42"), '"42"'); + assert.strictEqual(util.format("%j %j", 42, 43), "42 43"); + assert.strictEqual(util.format("%j %j", 42), "42 %j"); + + // Object format specifier + const obj = { + foo: "bar", + foobar: 1, + func: function () {}, + }; + const nestedObj = { + foo: "bar", + foobar: { + foo: "bar", + func: function () {}, + }, + }; + const nestedObj2 = { + foo: "bar", + foobar: 1, + func: [{ a: function () {} }], + }; + assert.strictEqual(util.format("%o"), "%o"); + assert.strictEqual(util.format("%o", 42), "42"); + assert.strictEqual(util.format("%o", "foo"), "'foo'"); + assert.strictEqual( + util.format("%o", obj), + "{\n" + + " foo: 'bar',\n" + + " foobar: 1,\n" + + " func: <ref *1> [Function: func] {\n" + + " [length]: 0,\n" + + " [name]: 'func',\n" + + " [prototype]: { [constructor]: [Circular *1] }\n" + + " }\n" + + "}", + ); + assert.strictEqual( + util.format("%o", nestedObj2), + "{\n" + + " foo: 'bar',\n" + + " foobar: 1,\n" + + " func: [\n" + + " {\n" + + " a: <ref *1> [Function: a] {\n" + + " [length]: 0,\n" + + " [name]: 'a',\n" + + " [prototype]: { [constructor]: [Circular *1] }\n" + + " }\n" + + " },\n" + + " [length]: 1\n" + + " ]\n" + + "}", + ); + assert.strictEqual( + util.format("%o", nestedObj), + "{\n" + + " foo: 'bar',\n" + + " foobar: {\n" + + " foo: 'bar',\n" + + " func: <ref *1> [Function: func] {\n" + + " [length]: 0,\n" + + " [name]: 'func',\n" + + " [prototype]: { [constructor]: [Circular *1] }\n" + + " }\n" + + " }\n" + + "}", + ); + + assert.strictEqual( + util.format("%o %o", obj, obj), + "{\n" + + " foo: 'bar',\n" + + " foobar: 1,\n" + + " func: <ref *1> [Function: func] {\n" + + " [prototype]: { [constructor]: [Circular *1] },\n" + + " [name]: 'func',\n" + + " [length]: 0\n" + + " }\n" + + "} {\n" + + " foo: 'bar',\n" + + " foobar: 1,\n" + + " func: <ref *1> [Function: func] {\n" + + " [prototype]: { [constructor]: [Circular *1] },\n" + + " [name]: 'func',\n" + + " [length]: 0\n" + + " }\n" + + "}", + ); + + assert.strictEqual( + util.format("%o %o", obj), + "{\n" + + " foo: 'bar',\n" + + " foobar: 1,\n" + + " func: <ref *1> [Function: func] {\n" + + " [prototype]: { [constructor]: [Circular *1] },\n" + + " [name]: 'func',\n" + + " [length]: 0\n" + + " }\n" + + "} %o", + ); + + assert.strictEqual(util.format("%O"), "%O"); + assert.strictEqual(util.format("%O", 42), "42"); + assert.strictEqual(util.format("%O", "foo"), "'foo'"); + assert.strictEqual(util.format("%O", obj), "{ foo: 'bar', foobar: 1, func: [Function: func] }"); + assert.strictEqual(util.format("%O", nestedObj), "{ foo: 'bar', foobar: { foo: 'bar', func: [Function: func] } }"); + assert.strictEqual( + util.format("%O %O", obj, obj), + "{ foo: 'bar', foobar: 1, func: [Function: func] } " + "{ foo: 'bar', foobar: 1, func: [Function: func] }", + ); + assert.strictEqual(util.format("%O %O", obj), "{ foo: 'bar', foobar: 1, func: [Function: func] } %O"); + + // Various format specifiers + assert.strictEqual(util.format("%%s%s", "foo"), "%sfoo"); + assert.strictEqual(util.format("%s:%s"), "%s:%s"); + assert.strictEqual(util.format("%s:%s", undefined), "undefined:%s"); + assert.strictEqual(util.format("%s:%s", "foo"), "foo:%s"); + assert.strictEqual(util.format("%s:%i", "foo"), "foo:%i"); + assert.strictEqual(util.format("%s:%f", "foo"), "foo:%f"); + assert.strictEqual(util.format("%s:%s", "foo", "bar"), "foo:bar"); + assert.strictEqual(util.format("%s:%s", "foo", "bar", "baz"), "foo:bar baz"); + assert.strictEqual(util.format("%%%s%%", "hi"), "%hi%"); + assert.strictEqual(util.format("%%%s%%%%", "hi"), "%hi%%"); + assert.strictEqual(util.format("%sbc%%def", "a"), "abc%def"); + assert.strictEqual(util.format("%d:%d", 12, 30), "12:30"); + assert.strictEqual(util.format("%d:%d", 12), "12:%d"); + assert.strictEqual(util.format("%d:%d"), "%d:%d"); + assert.strictEqual(util.format("%i:%i", 12, 30), "12:30"); + assert.strictEqual(util.format("%i:%i", 12), "12:%i"); + assert.strictEqual(util.format("%i:%i"), "%i:%i"); + assert.strictEqual(util.format("%f:%f", 12, 30), "12:30"); + assert.strictEqual(util.format("%f:%f", 12), "12:%f"); + assert.strictEqual(util.format("%f:%f"), "%f:%f"); + assert.strictEqual(util.format("o: %j, a: %j", {}, []), "o: {}, a: []"); + assert.strictEqual(util.format("o: %j, a: %j", {}), "o: {}, a: %j"); + assert.strictEqual(util.format("o: %j, a: %j"), "o: %j, a: %j"); + assert.strictEqual(util.format("o: %o, a: %O", {}, []), "o: {}, a: []"); + assert.strictEqual(util.format("o: %o, a: %o", {}), "o: {}, a: %o"); + assert.strictEqual(util.format("o: %O, a: %O"), "o: %O, a: %O"); + + // Invalid format specifiers + assert.strictEqual(util.format("a% b", "x"), "a% b x"); + assert.strictEqual(util.format("percent: %d%, fraction: %d", 10, 0.1), "percent: 10%, fraction: 0.1"); + assert.strictEqual(util.format("abc%", 1), "abc% 1"); + + // Additional arguments after format specifiers + assert.strictEqual(util.format("%i", 1, "number"), "1 number"); + assert.strictEqual( + util.format("%i", 1, () => {}), + "1 [Function (anonymous)]", + ); + + // %c from https://console.spec.whatwg.org/ + assert.strictEqual(util.format("%c"), "%c"); + assert.strictEqual(util.format("%cab"), "%cab"); + assert.strictEqual(util.format("%cab", "color: blue"), "ab"); + assert.strictEqual(util.format("%cab", "color: blue", "c"), "ab c"); + + { + const o = {}; + o.o = o; + assert.strictEqual(util.format("%j", o), "[Circular]"); + } + + { + const o = { + toJSON() { + throw new Error("Not a circular object but still not serializable"); + }, + }; + assert.throws(() => util.format("%j", o), /^Error: Not a circular object but still not serializable$/); + } + + // Errors + const err = new Error("foo"); + assert(util.format(err).startsWith(err.stack), `Expected "${util.format(err)}" to start with "${err.stack}"`); + + class CustomError extends Error { + constructor(msg) { + super(); + Object.defineProperty(this, "message", { value: msg, enumerable: false }); + Object.defineProperty(this, "name", { value: "CustomError", enumerable: false }); + Error.captureStackTrace(this, CustomError); + } + } + const customError = new CustomError("bar"); + assert.strictEqual(util.format(customError), customError.stack.replace(/^Error/, "Custom$&")); //! temp bug workaround + // Doesn't capture stack trace + function BadCustomError(msg) { + Error.call(this); + Object.defineProperty(this, "message", { value: msg, enumerable: false }); + Object.defineProperty(this, "name", { value: "BadCustomError", enumerable: false }); + } + Object.setPrototypeOf(BadCustomError.prototype, Error.prototype); + Object.setPrototypeOf(BadCustomError, Error); + assert.strictEqual(util.format(new BadCustomError("foo")), "[BadCustomError: foo]"); + + // The format of arguments should not depend on type of the first argument + assert.strictEqual(util.format("1", "1"), "1 1"); + assert.strictEqual(util.format(1, "1"), "1 1"); + assert.strictEqual(util.format("1", 1), "1 1"); + assert.strictEqual(util.format(1, -0), "1 -0"); + assert.strictEqual( + util.format("1", () => {}), + "1 [Function (anonymous)]", + ); + assert.strictEqual( + util.format(1, () => {}), + "1 [Function (anonymous)]", + ); + assert.strictEqual(util.format("1", "'"), "1 '"); + assert.strictEqual(util.format(1, "'"), "1 '"); + assert.strictEqual(util.format("1", "number"), "1 number"); + assert.strictEqual(util.format(1, "number"), "1 number"); + assert.strictEqual(util.format(5n), "5n"); + assert.strictEqual(util.format(5n, 5n), "5n 5n"); + + // Check `formatWithOptions`. + assert.strictEqual( + util.formatWithOptions({ colors: true }, true, undefined, Symbol(), 1, 5n, null, "foobar"), + "\u001b[33mtrue\u001b[39m " + + "\u001b[90mundefined\u001b[39m " + + "\u001b[32mSymbol()\u001b[39m " + + "\u001b[33m1\u001b[39m " + + "\u001b[33m5n\u001b[39m " + + "\u001b[1mnull\u001b[22m " + + "foobar", + ); + + assert.strictEqual( + util.format(new SharedArrayBuffer(4)), + "SharedArrayBuffer { [Uint8Contents]: <00 00 00 00>, byteLength: 4 }", + ); + + assert.strictEqual(util.formatWithOptions({ colors: true, compact: 3 }, "%s", [1, { a: true }]), "[ 1, [Object] ]"); + + [undefined, null, false, 5n, 5, "test", Symbol()].forEach(invalidOptions => { + assert.throws( + () => { + util.formatWithOptions(invalidOptions, { a: true }); + }, + { + code: "ERR_INVALID_ARG_TYPE", + message: /"inspectOptions".+object/, + }, + ); + }); +}); diff --git a/test/js/node/util/node-inspect-tests/parallel/util-inspect-getters-accessing-this.test.js b/test/js/node/util/node-inspect-tests/parallel/util-inspect-getters-accessing-this.test.js new file mode 100644 index 000000000..ab3c17e59 --- /dev/null +++ b/test/js/node/util/node-inspect-tests/parallel/util-inspect-getters-accessing-this.test.js @@ -0,0 +1,60 @@ +// This test ensures that util.inspect logs getters which access this. + +import assert from "assert"; +import { inspect } from "util"; + +test("no assertion failures", () => { + { + class X { + constructor() { + this._y = 123; + } + + get y() { + return this._y; + } + } + + const result = inspect(new X(), { + getters: true, + showHidden: true, + }); + + assert.strictEqual(result, "X { _y: 123, [y]: [Getter: 123] }"); + } + + // Regression test for https://github.com/nodejs/node/issues/37054 + { + class A { + constructor(B) { + this.B = B; + } + get b() { + return this.B; + } + } + + class B { + constructor() { + this.A = new A(this); + } + get a() { + return this.A; + } + } + + const result = inspect(new B(), { + depth: 1, + getters: true, + showHidden: true, + }); + + assert.strictEqual( + result, + "<ref *1> B {\n" + + " A: A { B: [Circular *1], [b]: [Getter] [Circular *1] },\n" + + " [a]: [Getter] A { B: [Circular *1], [b]: [Getter] [Circular *1] }\n" + + "}", + ); + } +}); diff --git a/test/js/node/util/node-inspect-tests/parallel/util-inspect-long-running.test.mjs b/test/js/node/util/node-inspect-tests/parallel/util-inspect-long-running.test.mjs new file mode 100644 index 000000000..2cf3b7d14 --- /dev/null +++ b/test/js/node/util/node-inspect-tests/parallel/util-inspect-long-running.test.mjs @@ -0,0 +1,27 @@ +import util from "util"; +// Test that huge objects don't crash due to exceeding the maximum heap size. + +// Create a difficult to stringify object. Without the artificial limitation +// this would crash or throw an maximum string size error. + +//! This test currently relies on a non-standard extension to util.inspect +// It optimizes the output of circular objects. If that extension ends up +// being removed, this test will likely hang for a pretty long time. +// We are missing some kind of optimization Node does to pass this test near instantly even without the extension. + +test("should not take longer than 2 seconds", () => { + let last = {}; + const obj = last; + + for (let i = 0; i < 500; i++) { + // original value: 1000 (reduced to 500 to let tests run faster) + last.next = { circular: obj, last, obj: { a: i, b: 2, c: true } }; + last = last.next; + obj[i] = last; + } + + const str = util.inspect(obj, { depth: Infinity, colors: false }); + void str; + //console.log(str); + //console.log(str.length); +}); diff --git a/test/js/node/util/node-inspect-tests/parallel/util-inspect-proxy.test.js b/test/js/node/util/node-inspect-tests/parallel/util-inspect-proxy.test.js new file mode 100644 index 000000000..f87bd5a3c --- /dev/null +++ b/test/js/node/util/node-inspect-tests/parallel/util-inspect-proxy.test.js @@ -0,0 +1,177 @@ +import assert from "assert"; +import util from "util"; +const opts = { showProxy: true }; + +test("no assertion failures", () => { + let proxyObj; + let called = false; + const target = { + [util.inspect.custom](depth, { showProxy }) { + if (showProxy === false) { + called = true; + if (proxyObj !== this) { + throw new Error("Failed"); + } + } + return [1, 2, 3]; + }, + }; + const handler = { + getPrototypeOf() { + throw new Error("getPrototypeOf"); + }, + setPrototypeOf() { + throw new Error("setPrototypeOf"); + }, + isExtensible() { + throw new Error("isExtensible"); + }, + preventExtensions() { + throw new Error("preventExtensions"); + }, + getOwnPropertyDescriptor() { + throw new Error("getOwnPropertyDescriptor"); + }, + defineProperty() { + throw new Error("defineProperty"); + }, + has() { + throw new Error("has"); + }, + get(_, key) { + throw new Error("get: " + String(key)); + }, + set() { + throw new Error("set"); + }, + deleteProperty() { + throw new Error("deleteProperty"); + }, + ownKeys() { + throw new Error("ownKeys"); + }, + apply() { + throw new Error("apply"); + }, + construct() { + throw new Error("construct"); + }, + }; + proxyObj = new Proxy(target, handler); + + // Inspecting the proxy should not actually walk it's properties + util.inspect(proxyObj, opts); + + // Make sure inspecting object does not trigger any proxy traps. + util.format("%s", proxyObj); + + const r = Proxy.revocable({}, {}); + r.revoke(); + + assert.strictEqual(util.inspect(r.proxy), "<Revoked Proxy>"); + assert.strictEqual( + util.inspect(r, { showProxy: true }), + "{ proxy: <Revoked Proxy>, revoke: [Function (anonymous)] }", + ); + + assert.strictEqual(util.format("%s", r.proxy), "<Revoked Proxy>"); + + assert.strictEqual( + util.inspect(proxyObj, opts), + "Proxy [\n" + + " [ 1, 2, 3 ],\n" + + " {\n" + + " getPrototypeOf: [Function: getPrototypeOf],\n" + + " setPrototypeOf: [Function: setPrototypeOf],\n" + + " isExtensible: [Function: isExtensible],\n" + + " preventExtensions: [Function: preventExtensions],\n" + + " getOwnPropertyDescriptor: [Function: getOwnPropertyDescriptor],\n" + + " defineProperty: [Function: defineProperty],\n" + + " has: [Function: has],\n" + + " get: [Function: get],\n" + + " set: [Function: set],\n" + + " deleteProperty: [Function: deleteProperty],\n" + + " ownKeys: [Function: ownKeys],\n" + + " apply: [Function: apply],\n" + + " construct: [Function: construct]\n" + + " }\n" + + "]", + ); + + // Inspecting a proxy without the showProxy option set to true should not + // trigger any proxy handlers. + assert.strictEqual(util.inspect(proxyObj), "[ 1, 2, 3 ]"); + assert(called); + + // Yo dawg, I heard you liked Proxy so I put a Proxy + // inside your Proxy that proxies your Proxy's Proxy. + const proxy1 = new Proxy({}, {}); + const proxy2 = new Proxy(proxy1, {}); + const proxy3 = new Proxy(proxy2, proxy1); + const proxy4 = new Proxy(proxy1, proxy2); + const proxy5 = new Proxy(proxy3, proxy4); + const proxy6 = new Proxy(proxy5, proxy5); + const expected0 = "{}"; + const expected1 = "Proxy [ {}, {} ]"; + const expected2 = "Proxy [ Proxy [ {}, {} ], {} ]"; + const expected3 = "Proxy [ Proxy [ Proxy [ {}, {} ], {} ], Proxy [ {}, {} ] ]"; + const expected4 = "Proxy [ Proxy [ {}, {} ], Proxy [ Proxy [ {}, {} ], {} ] ]"; + const expected5 = + "Proxy [\n " + + "Proxy [ Proxy [ Proxy [Array], {} ], Proxy [ {}, {} ] ],\n" + + " Proxy [ Proxy [ {}, {} ], Proxy [ Proxy [Array], {} ] ]" + + "\n]"; + const expected6 = + "Proxy [\n" + + " Proxy [\n" + + " Proxy [ Proxy [Array], Proxy [Array] ],\n" + + " Proxy [ Proxy [Array], Proxy [Array] ]\n" + + " ],\n" + + " Proxy [\n" + + " Proxy [ Proxy [Array], Proxy [Array] ],\n" + + " Proxy [ Proxy [Array], Proxy [Array] ]\n" + + " ]\n" + + "]"; + assert.strictEqual(util.inspect(proxy1, { showProxy: 1, depth: null }), expected1); + assert.strictEqual(util.inspect(proxy2, opts), expected2); + assert.strictEqual(util.inspect(proxy3, opts), expected3); + assert.strictEqual(util.inspect(proxy4, opts), expected4); + assert.strictEqual(util.inspect(proxy5, opts), expected5); + assert.strictEqual(util.inspect(proxy6, opts), expected6); + assert.strictEqual(util.inspect(proxy1), expected0); + assert.strictEqual(util.inspect(proxy2), expected0); + assert.strictEqual(util.inspect(proxy3), expected0); + assert.strictEqual(util.inspect(proxy4), expected0); + assert.strictEqual(util.inspect(proxy5), expected0); + assert.strictEqual(util.inspect(proxy6), expected0); + + // Just for fun, let's create a Proxy using Arrays. + const proxy7 = new Proxy([], []); + const expected7 = "Proxy [ [], [] ]"; + assert.strictEqual(util.inspect(proxy7, opts), expected7); + assert.strictEqual(util.inspect(proxy7), "[]"); + + // Now we're just getting silly, right? + const proxy8 = new Proxy(Date, []); + const proxy9 = new Proxy(Date, String); + const expected8 = "Proxy [ [Function: Date], [] ]"; + const expected9 = "Proxy [ [Function: Date], [Function: String] ]"; + assert.strictEqual(util.inspect(proxy8, opts), expected8); + assert.strictEqual(util.inspect(proxy9, opts), expected9); + assert.strictEqual(util.inspect(proxy8), "[Function: Date]"); + assert.strictEqual(util.inspect(proxy9), "[Function: Date]"); + + const proxy10 = new Proxy(() => {}, {}); + const proxy11 = new Proxy(() => {}, { + get() { + return proxy11; + }, + apply() { + return proxy11; + }, + }); + const expected10 = "[Function (anonymous)]"; + const expected11 = "[Function (anonymous)]"; + assert.strictEqual(util.inspect(proxy10), expected10); + assert.strictEqual(util.inspect(proxy11), expected11); +}); diff --git a/test/js/node/util/node-inspect-tests/parallel/util-inspect.test.js b/test/js/node/util/node-inspect-tests/parallel/util-inspect.test.js new file mode 100644 index 000000000..19b0f1b39 --- /dev/null +++ b/test/js/node/util/node-inspect-tests/parallel/util-inspect.test.js @@ -0,0 +1,3294 @@ +// Copyright Joyent, Inc. and other Node contributors. +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to permit +// persons to whom the Software is furnished to do so, subject to the +// following conditions: +// +// The above copyright notice and this permission notice shall be included +// in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN +// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR +// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE +// USE OR OTHER DEALINGS IN THE SOFTWARE. + +import assert from "assert"; +import util, { inspect } from "util"; +import vm from "vm"; +import { MessageChannel } from "worker_threads"; +import url from "url"; +const noop = () => {}; +const mustCallChecks = []; + +//? Bun does not have this function yet +assert.doesNotMatch = (string, regexp, message) => { + try { + assert.match(string, regexp, message); + throw null; + } catch (e) { + if (e === null) { + const msg = + message || `The input was expected to not match the regular expression ${regexp}. Input:\n'${string}'`; + throw new assert.AssertionError({ + message: msg, + actual: string, + expected: regexp, + operator: "doesNotMatch", + stackStartFn: assert.doesNotMatch, + }); + } + // pass + } +}; + +test("no assertion failures", () => { + assert.strictEqual(util.inspect(1), "1"); + assert.strictEqual(util.inspect(false), "false"); + assert.strictEqual(util.inspect(""), "''"); + assert.strictEqual(util.inspect("hello"), "'hello'"); + assert.strictEqual( + util.inspect(function abc() {}), + "[Function: abc]", + ); + assert.strictEqual( + util.inspect(() => {}), + "[Function (anonymous)]", + ); + assert.strictEqual( + util.inspect(async function () {}), + "[AsyncFunction (anonymous)]", + ); + assert.strictEqual( + util.inspect(async () => {}), + "[AsyncFunction (anonymous)]", + ); + + // Special function inspection. + { + const fn = (() => function* () {})(); + assert.strictEqual(util.inspect(fn), "[GeneratorFunction (anonymous)]"); + assert.strictEqual( + util.inspect(async function* abc() {}), + "[AsyncGeneratorFunction: abc]", + ); + Object.setPrototypeOf( + fn, + Object.getPrototypeOf(async () => {}), + ); + //! Note: + // The following tests are relying on the JS-based is(Async|Generator)Function polyfills, + // when switching them out back for the native implementation make sure they are fixed! + // Due to the bug with the native impl. being flaky make sure its tested multiple times. + assert.strictEqual(util.inspect(fn), "[GeneratorFunction (anonymous)] AsyncFunction"); + Object.defineProperty(fn, "name", { value: 5, configurable: true }); + assert.strictEqual(util.inspect(fn), "[GeneratorFunction: 5] AsyncFunction"); + Object.defineProperty(fn, Symbol.toStringTag, { + value: "Foobar", + configurable: true, + }); + assert.strictEqual(util.inspect({ ["5"]: fn }), "{ '5': [GeneratorFunction: 5] AsyncFunction [Foobar] }"); + Object.defineProperty(fn, "name", { value: "5", configurable: true }); + Object.setPrototypeOf(fn, null); + assert.strictEqual(util.inspect(fn), "[GeneratorFunction (null prototype): 5] [Foobar]"); + assert.strictEqual(util.inspect({ ["5"]: fn }), "{ '5': [GeneratorFunction (null prototype): 5] [Foobar] }"); + } + + assert.strictEqual(util.inspect(undefined), "undefined"); + assert.strictEqual(util.inspect(null), "null"); + assert.strictEqual(util.inspect(/foo(bar\n)?/gi), "/foo(bar\\n)?/gi"); + assert.strictEqual( + util.inspect(new Date("Sun, 14 Feb 2010 11:48:40 GMT")), + new Date("2010-02-14T12:48:40+01:00").toISOString(), + ); + assert.strictEqual(util.inspect(new Date("")), new Date("").toString()); + assert.strictEqual(util.inspect("\n\x01"), "'\\n\\x01'"); + assert.strictEqual( + util.inspect(`${Array(75).fill(1)}'\n\x1d\n\x03\x85\x7f\x7e\x9f\xa0`), + `"${Array(75).fill(1)}'\\n" +\n '\\x1D\\n' +\n '\\x03\\x85\\x7F~\\x9F '`, + ); + assert.strictEqual(util.inspect([]), "[]"); + assert.strictEqual(util.inspect({ __proto__: [] }), "Array {}"); + assert.strictEqual(util.inspect([1, 2]), "[ 1, 2 ]"); + assert.strictEqual(util.inspect([1, [2, 3]]), "[ 1, [ 2, 3 ] ]"); + assert.strictEqual(util.inspect({}), "{}"); + assert.strictEqual(util.inspect({ a: 1 }), "{ a: 1 }"); + assert.strictEqual(util.inspect({ a: function () {} }), "{ a: [Function: a] }"); + assert.strictEqual(util.inspect({ a: () => {} }), "{ a: [Function: a] }"); + + assert.strictEqual(util.inspect({ a: async function abc() {} }), "{ a: [AsyncFunction: abc] }"); + assert.strictEqual(util.inspect({ a: async () => {} }), "{ a: [AsyncFunction: a] }"); + assert.strictEqual(util.inspect({ a: function* () {} }), "{ a: [GeneratorFunction: a] }"); + assert.strictEqual(util.inspect({ a: 1, b: 2 }), "{ a: 1, b: 2 }"); + assert.strictEqual(util.inspect({ "a": {} }), "{ a: {} }"); + assert.strictEqual(util.inspect({ "a": { "b": 2 } }), "{ a: { b: 2 } }"); + assert.strictEqual(util.inspect({ "a": { "b": { "c": { "d": 2 } } } }), "{ a: { b: { c: [Object] } } }"); + assert.strictEqual( + util.inspect({ "a": { "b": { "c": { "d": 2 } } } }, false, null), + "{\n a: { b: { c: { d: 2 } } }\n}", + ); + assert.strictEqual(util.inspect([1, 2, 3], true), "[ 1, 2, 3, [length]: 3 ]"); + assert.strictEqual(util.inspect({ "a": { "b": { "c": 2 } } }, false, 0), "{ a: [Object] }"); + assert.strictEqual(util.inspect({ "a": { "b": { "c": 2 } } }, false, 1), "{ a: { b: [Object] } }"); + assert.strictEqual(util.inspect({ "a": { "b": ["c"] } }, false, 1), "{ a: { b: [Array] } }"); + assert.strictEqual(util.inspect(new Uint8Array(0)), "Uint8Array(0) []"); + assert(inspect(new Uint8Array(0), { showHidden: true }).includes("[buffer]")); + assert.strictEqual( + util.inspect(Object.create({}, { visible: { value: 1, enumerable: true }, hidden: { value: 2 } })), + "{ visible: 1 }", + ); + assert.strictEqual( + util.inspect(Object.assign(new String("hello"), { [Symbol("foo")]: 123 }), { showHidden: true }), + "[String: 'hello'] { [length]: 5, [Symbol(foo)]: 123 }", + ); + + { + const regexp = /regexp/; + regexp.aprop = 42; + assert.strictEqual(util.inspect({ a: regexp }, false, 0), "{ a: /regexp/ }"); + } + + assert.match(util.inspect({ a: { a: { a: { a: {} } } } }, undefined, undefined, true), /Object/); + assert.doesNotMatch(util.inspect({ a: { a: { a: { a: {} } } } }, undefined, null, true), /Object/); + + { + const showHidden = true; + const ab = new Uint8Array([1, 2, 3, 4]).buffer; + const dv = new DataView(ab, 1, 2); + assert.strictEqual(util.inspect(ab, showHidden), "ArrayBuffer { [Uint8Contents]: <01 02 03 04>, byteLength: 4 }"); + assert.strictEqual( + util.inspect(new DataView(ab, 1, 2), showHidden), + "DataView {\n" + + " byteLength: 2,\n" + + " byteOffset: 1,\n" + + " buffer: ArrayBuffer {" + + " [Uint8Contents]: <01 02 03 04>, byteLength: 4 }\n}", + ); + assert.strictEqual(util.inspect(ab, showHidden), "ArrayBuffer { [Uint8Contents]: <01 02 03 04>, byteLength: 4 }"); + assert.strictEqual( + util.inspect(dv, showHidden), + "DataView {\n" + + " byteLength: 2,\n" + + " byteOffset: 1,\n" + + " buffer: ArrayBuffer { [Uint8Contents]: " + + "<01 02 03 04>, byteLength: 4 }\n}", + ); + ab.x = 42; + dv.y = 1337; + assert.strictEqual( + util.inspect(ab, showHidden), + "ArrayBuffer { [Uint8Contents]: <01 02 03 04>, " + "byteLength: 4, x: 42 }", + ); + assert.strictEqual( + util.inspect(dv, showHidden), + "DataView {\n" + + " byteLength: 2,\n" + + " byteOffset: 1,\n" + + " buffer: ArrayBuffer { [Uint8Contents]: <01 02 03 04>," + + " byteLength: 4, x: 42 },\n" + + " y: 1337\n}", + ); + } + + { + const ab = new ArrayBuffer(42); + assert.strictEqual(ab.byteLength, 42); + new MessageChannel().port1.postMessage(ab, [ab]); + assert.strictEqual(ab.byteLength, 0); + assert.strictEqual(util.inspect(ab), "ArrayBuffer { (detached), byteLength: 0 }"); + } + + // Truncate output for ArrayBuffers using plural or singular bytes + { + const ab = new ArrayBuffer(3); + assert.strictEqual( + util.inspect(ab, { showHidden: true, maxArrayLength: 2 }), + "ArrayBuffer { [Uint8Contents]" + ": <00 00 ... 1 more byte>, byteLength: 3 }", + ); + assert.strictEqual( + util.inspect(ab, { showHidden: true, maxArrayLength: 1 }), + "ArrayBuffer { [Uint8Contents]" + ": <00 ... 2 more bytes>, byteLength: 3 }", + ); + } +}); + +// Now do the same checks but from a different context. +test("inspect from a different context", () => { + const showHidden = false; + const ab = vm.runInNewContext("new ArrayBuffer(4)"); + const dv = vm.runInNewContext("new DataView(ab, 1, 2)", { ab }); + assert.strictEqual(util.inspect(ab, showHidden), "ArrayBuffer { [Uint8Contents]: <00 00 00 00>, byteLength: 4 }"); + assert.strictEqual( + util.inspect(new DataView(ab, 1, 2), showHidden), + "DataView {\n" + + " byteLength: 2,\n" + + " byteOffset: 1,\n" + + " buffer: ArrayBuffer { [Uint8Contents]: <00 00 00 00>, byteLength: 4 }\n}", + ); + assert.strictEqual(util.inspect(ab, showHidden), "ArrayBuffer { [Uint8Contents]: <00 00 00 00>, byteLength: 4 }"); + //! segfaults + /*assert.strictEqual( + util.inspect(dv, showHidden), + 'DataView {\n' + + ' byteLength: 2,\n' + + ' byteOffset: 1,\n' + + ' buffer: ArrayBuffer { [Uint8Contents]: <00 00 00 00>, byteLength: 4 }\n}' + );*/ + ab.x = 42; + dv.y = 1337; + assert.strictEqual( + util.inspect(ab, showHidden), + "ArrayBuffer { [Uint8Contents]: <00 00 00 00>, byteLength: 4, x: 42 }", + ); + //! segfaults + /*assert.strictEqual( + util.inspect(dv, showHidden), + 'DataView {\n' + + ' byteLength: 2,\n' + + ' byteOffset: 1,\n' + + ' buffer: ArrayBuffer { [Uint8Contents]: <00 00 00 00>, byteLength: 4, x: 42 },\n' + + ' y: 1337\n}' + );*/ +}); + +test("no assertion failures 2", () => { + [ + Float32Array, + Float64Array, + Int16Array, + Int32Array, + Int8Array, + Uint16Array, + Uint32Array, + Uint8Array, + Uint8ClampedArray, + ].forEach(constructor => { + const length = 2; + const byteLength = length * constructor.BYTES_PER_ELEMENT; + const array = new constructor(new ArrayBuffer(byteLength), 0, length); + array[0] = 65; + array[1] = 97; + assert.strictEqual( + util.inspect(array, { showHidden: true }), + `${constructor.name}(${length}) [\n` + + " 65,\n" + + " 97,\n" + + ` [BYTES_PER_ELEMENT]: ${constructor.BYTES_PER_ELEMENT},\n` + + ` [length]: ${length},\n` + + ` [byteLength]: ${byteLength},\n` + + " [byteOffset]: 0,\n" + + ` [buffer]: ArrayBuffer { byteLength: ${byteLength} }\n]`, + ); + assert.strictEqual(util.inspect(array, false), `${constructor.name}(${length}) [ 65, 97 ]`); + }); + + // Now check that declaring a TypedArray in a different context works the same. + [ + Float32Array, + Float64Array, + Int16Array, + Int32Array, + Int8Array, + Uint16Array, + Uint32Array, + Uint8Array, + Uint8ClampedArray, + ].forEach(constructor => { + const length = 2; + const byteLength = length * constructor.BYTES_PER_ELEMENT; + const array = vm.runInNewContext("new constructor(new ArrayBuffer(byteLength), 0, length)", { + constructor, + byteLength, + length, + }); + array[0] = 65; + array[1] = 97; + assert.strictEqual( + util.inspect(array, true), + `${constructor.name}(${length}) [\n` + + " 65,\n" + + " 97,\n" + + ` [BYTES_PER_ELEMENT]: ${constructor.BYTES_PER_ELEMENT},\n` + + ` [length]: ${length},\n` + + ` [byteLength]: ${byteLength},\n` + + " [byteOffset]: 0,\n" + + ` [buffer]: ArrayBuffer { byteLength: ${byteLength} }\n]`, + ); + assert.strictEqual(util.inspect(array, false), `${constructor.name}(${length}) [ 65, 97 ]`); + }); + + { + const brokenLength = new Float32Array(2); + Object.defineProperty(brokenLength, "length", { value: -1 }); + assert.strictEqual(inspect(brokenLength), "Float32Array(2) [ 0n, 0n ]"); + } + + assert.strictEqual( + util.inspect( + Object.create( + {}, + { + visible: { value: 1, enumerable: true }, + hidden: { value: 2 }, + }, + ), + { showHidden: true }, + ), + "{ visible: 1, [hidden]: 2 }", + ); + // Objects without prototype. + assert.strictEqual( + util.inspect( + Object.create(null, { + name: { value: "Tim", enumerable: true }, + hidden: { value: "secret" }, + }), + { showHidden: true }, + ), + "[Object: null prototype] { name: 'Tim', [hidden]: 'secret' }", + ); + + assert.strictEqual( + util.inspect( + Object.create(null, { + name: { value: "Tim", enumerable: true }, + hidden: { value: "secret" }, + }), + ), + "[Object: null prototype] { name: 'Tim' }", + ); + + // Dynamic properties. + { + assert.strictEqual( + util.inspect({ + get readonly() { + return 1; + }, + }), + "{ readonly: [Getter] }", + ); + + assert.strictEqual( + util.inspect({ + get readwrite() { + return 1; + }, + set readwrite(val) {}, + }), + "{ readwrite: [Getter/Setter] }", + ); + + assert.strictEqual(util.inspect({ set writeonly(val) {} }), "{ writeonly: [Setter] }"); + + const value = {}; + value.a = value; + assert.strictEqual(util.inspect(value), "<ref *1> { a: [Circular *1] }"); + const getterFn = { + get one() { + return null; + }, + }; + assert.strictEqual(util.inspect(getterFn, { getters: true }), "{ one: [Getter: null] }"); + } + + // Array with dynamic properties. + { + const value = [1, 2, 3]; + Object.defineProperty(value, "growingLength", { + enumerable: true, + get: function () { + this.push(true); + return this.length; + }, + }); + Object.defineProperty(value, "-1", { + enumerable: true, + value: -1, + }); + assert.strictEqual(util.inspect(value), "[ 1, 2, 3, growingLength: [Getter], '-1': -1 ]"); + } + + // Array with inherited number properties. + { + class CustomArray extends Array {} + CustomArray.prototype[5] = "foo"; + CustomArray.prototype[49] = "bar"; + CustomArray.prototype.foo = true; + const arr = new CustomArray(50); + arr[49] = "I win"; + assert.strictEqual(util.inspect(arr), "CustomArray(50) [ <49 empty items>, 'I win' ]"); + assert.strictEqual( + util.inspect(arr, { showHidden: true }), + "CustomArray(50) [\n" + + " <49 empty items>,\n" + + " 'I win',\n" + + " [length]: 50,\n" + + " '5': 'foo',\n" + + " foo: true\n" + + "]", + ); + } + + // Array with extra properties. + { + const arr = [1, 2, 3, ,]; + arr.foo = "bar"; + assert.strictEqual(util.inspect(arr), "[ 1, 2, 3, <1 empty item>, foo: 'bar' ]"); + + const arr2 = []; + assert.strictEqual(util.inspect([], { showHidden: true }), "[ [length]: 0 ]"); + arr2["00"] = 1; + assert.strictEqual(util.inspect(arr2), "[ '00': 1 ]"); + assert.strictEqual(util.inspect(arr2, { showHidden: true }), "[ [length]: 0, '00': 1 ]"); + arr2[1] = 0; + assert.strictEqual(util.inspect(arr2), "[ <1 empty item>, 0, '00': 1 ]"); + assert.strictEqual(util.inspect(arr2, { showHidden: true }), "[ <1 empty item>, 0, [length]: 2, '00': 1 ]"); + delete arr2[1]; + assert.strictEqual(util.inspect(arr2), "[ <2 empty items>, '00': 1 ]"); + assert.strictEqual(util.inspect(arr2, { showHidden: true }), "[ <2 empty items>, [length]: 2, '00': 1 ]"); + arr2["01"] = 2; + assert.strictEqual(util.inspect(arr2), "[ <2 empty items>, '00': 1, '01': 2 ]"); + assert.strictEqual(util.inspect(arr2, { showHidden: true }), "[ <2 empty items>, [length]: 2, '00': 1, '01': 2 ]"); + delete arr2["00"]; + arr2[0] = 0; + assert.strictEqual(util.inspect(arr2), "[ 0, <1 empty item>, '01': 2 ]"); + assert.strictEqual(util.inspect(arr2, { showHidden: true }), "[ 0, <1 empty item>, [length]: 2, '01': 2 ]"); + delete arr2["01"]; + arr2[2 ** 32 - 2] = "max"; + arr2[2 ** 32 - 1] = "too far"; + assert.strictEqual(util.inspect(arr2), "[ 0, <4294967293 empty items>, 'max', '4294967295': 'too far' ]"); + + const arr3 = []; + arr3[-1] = -1; + assert.strictEqual(util.inspect(arr3), "[ '-1': -1 ]"); + } + + // Indices out of bounds. + { + const arr = []; + arr[2 ** 32] = true; // Not a valid array index. + assert.strictEqual(util.inspect(arr), "[ '4294967296': true ]"); + arr[0] = true; + arr[10] = true; + assert.strictEqual(util.inspect(arr), "[ true, <9 empty items>, true, '4294967296': true ]"); + arr[2 ** 32 - 2] = true; + arr[2 ** 32 - 1] = true; + arr[2 ** 32 + 1] = true; + delete arr[0]; + delete arr[10]; + assert.strictEqual( + util.inspect(arr), + [ + "[", + "<4294967294 empty items>,", + "true,", + "'4294967296': true,", + "'4294967295': true,", + "'4294967297': true\n]", + ].join("\n "), + ); + } + + // Function with properties. + { + const value = () => {}; + value.aprop = 42; + assert.strictEqual(util.inspect(value), "[Function: value] { aprop: 42 }"); + } + + // Anonymous function with properties. + { + const value = (() => function () {})(); + value.aprop = 42; + assert.strictEqual(util.inspect(value), "[Function (anonymous)] { aprop: 42 }"); + } + + // Regular expressions with properties. + { + const value = /123/gi; + value.aprop = 42; + assert.strictEqual(util.inspect(value), "/123/gi { aprop: 42 }"); + } + + // Dates with properties. + { + const value = new Date("Sun, 14 Feb 2010 11:48:40 GMT"); + value.aprop = 42; + assert.strictEqual(util.inspect(value), "2010-02-14T11:48:40.000Z { aprop: 42 }"); + } + + // Test the internal isDate implementation. + { + const Date2 = vm.runInNewContext("Date"); + const d = new Date2(); + const orig = util.inspect(d); + Date2.prototype.foo = "bar"; + const after = util.inspect(d); + assert.strictEqual(orig, after); + } + + // Test positive/negative zero. + assert.strictEqual(util.inspect(0), "0"); + assert.strictEqual(util.inspect(-0), "-0"); + // Edge case from check. + assert.strictEqual(util.inspect(-5e-324), "-5e-324"); + + // Test for sparse array. + { + const a = ["foo", "bar", "baz"]; + assert.strictEqual(util.inspect(a), "[ 'foo', 'bar', 'baz' ]"); + delete a[1]; + assert.strictEqual(util.inspect(a), "[ 'foo', <1 empty item>, 'baz' ]"); + assert.strictEqual(util.inspect(a, true), "[ 'foo', <1 empty item>, 'baz', [length]: 3 ]"); + assert.strictEqual(util.inspect(new Array(5)), "[ <5 empty items> ]"); + a[3] = "bar"; + a[100] = "qux"; + assert.strictEqual( + util.inspect(a, { breakLength: Infinity }), + "[ 'foo', <1 empty item>, 'baz', 'bar', <96 empty items>, 'qux' ]", + ); + delete a[3]; + assert.strictEqual( + util.inspect(a, { maxArrayLength: 4 }), + "[ 'foo', <1 empty item>, 'baz', <97 empty items>, ... 1 more item ]", + ); + // test 4 special case + assert.strictEqual( + util.inspect(a, { + maxArrayLength: 2, + }), + "[ 'foo', <1 empty item>, ... 99 more items ]", + ); + } + + // Test for other constructors in different context. + { + let obj = vm.runInNewContext("(function(){return {}})()", {}); + assert.strictEqual(util.inspect(obj), "{}"); + obj = vm.runInNewContext("const m=new Map();m.set(1,2);m", {}); + assert.strictEqual(util.inspect(obj), "Map(1) { 1 => 2 }"); + obj = vm.runInNewContext("const s=new Set();s.add(1);s.add(2);s", {}); + assert.strictEqual(util.inspect(obj), "Set(2) { 1, 2 }"); + obj = vm.runInNewContext("fn=function(){};new Promise(fn,fn)", {}); + assert.strictEqual(util.inspect(obj), "Promise { <pending> }"); + } + + // Test for property descriptors. + { + const getter = Object.create(null, { + a: { + get: function () { + return "aaa"; + }, + }, + }); + const setter = Object.create(null, { + b: { + set: function () {}, + }, + }); + const getterAndSetter = Object.create(null, { + c: { + get: function () { + return "ccc"; + }, + set: function () {}, + }, + }); + assert.strictEqual(util.inspect(getter, true), "[Object: null prototype] { [a]: [Getter] }"); + assert.strictEqual(util.inspect(setter, true), "[Object: null prototype] { [b]: [Setter] }"); + assert.strictEqual(util.inspect(getterAndSetter, true), "[Object: null prototype] { [c]: [Getter/Setter] }"); + } + + // Exceptions should print the error message, not '{}'. + { + [new Error(), new Error("FAIL"), new TypeError("FAIL"), new SyntaxError("FAIL")].forEach(err => { + assert( + //! temp bug workaround with replace()'s + util.inspect(err).startsWith(err.stack.replace(/^Error: /, err.message ? "$&" : "Error")), + `Expected "${util.inspect(err)}" to start with "${err.stack.replace( + /^Error: /, + err.message ? "$&" : "Error", + )}"`, + ); + }); + + assert.throws( + () => undef(), + e => { + assert(util.inspect(e).startsWith(e.stack), `Expected "${util.inspect(e)}" to start with "${e.stack}"`); + return true; + }, + ); + + const ex = util.inspect(new Error("FAIL"), true); + assert(ex.includes("Error: FAIL")); + assert(ex.includes("[stack]")); + assert(ex.includes("[message]")); + } + + { + const falsyCause1 = new Error("", { cause: false }); + delete falsyCause1.stack; + const falsyCause2 = new Error(undefined, { cause: null }); + falsyCause2.stack = ""; + const undefinedCause = new Error("", { cause: undefined }); + undefinedCause.stack = ""; + + assert.match(util.inspect(falsyCause1), /^\[Error\] \{ .*\[cause\]: false.* \}$/); + assert.match(util.inspect(falsyCause2), /^\[Error\] \{ .*\[cause\]: null.* \}$/); + assert.match(util.inspect(undefinedCause), /^\[Error\] \{ .*\[cause\]: undefined.* \}$/); + } + + { + const tmp = Error.stackTraceLimit; + Error.stackTraceLimit = 0; + const err = new Error("foo"); + const err2 = new Error("foo\nbar"); + assert.strictEqual(util.inspect(err, { compact: true }), "[Error: foo]"); + //assert(err.stack); //! skipped test, broken in bun + delete err.stack; + assert(!err.stack); + assert.strictEqual(util.inspect(err, { compact: true }), "[Error: foo]"); + assert.strictEqual(util.inspect(err2, { compact: true }), "[Error: foo\nbar]"); + + err.bar = true; + err2.bar = true; + + assert.strictEqual(util.inspect(err, { compact: true }), "{ [Error: foo] bar: true }"); + assert.strictEqual(util.inspect(err2, { compact: true }), "{ [Error: foo\nbar]\n bar: true }"); + assert.strictEqual(util.inspect(err, { compact: true, breakLength: 5 }), "{ [Error: foo]\n bar: true }"); + assert.strictEqual(util.inspect(err, { compact: true, breakLength: 1 }), "{ [Error: foo]\n bar:\n true }"); + assert.strictEqual(util.inspect(err2, { compact: true, breakLength: 5 }), "{ [Error: foo\nbar]\n bar: true }"); + assert.strictEqual(util.inspect(err, { compact: false }), "[Error: foo] {\n bar: true\n}"); + assert.strictEqual(util.inspect(err2, { compact: false }), "[Error: foo\nbar] {\n bar: true\n}"); + + Error.stackTraceLimit = tmp; + } + + // Prevent non-enumerable error properties from being printed. + { + // TODO(bun): Make originalLine and originalColumn non-enumerable + let err = new Error(); + err.message = "foobar"; + let out = util + .inspect(err) + .replace(/\{\s*originalLine: .+\s*originalColumn: .+\s*\}/, "") + .trim() + .split("\n"); + assert.strictEqual(out[0], "Error: foobar"); + assert(out.at(-1).startsWith(" at "), 'Expected "' + out.at(-1) + '" to start with " at "'); + // Reset the error, the stack is otherwise not recreated. + err = new Error(); + err.message = "foobar"; + err.name = "Unique"; + Object.defineProperty(err, "stack", { value: err.stack, enumerable: true }); + out = util + .inspect(err) + .replace(/\{\s*originalLine: .+\s*originalColumn: .+\s*\}/, "") + .trim() + .split("\n"); + assert.strictEqual(out[0], "Unique: foobar"); + assert(out.at(-1).startsWith(" at "), 'Expected "' + out.at(-1) + '" to start with " at "'); + err.name = "Baz"; + out = util + .inspect(err) + .replace(/\n\s*originalLine: .+\s*originalColumn: .+/, "") + .trim() + .split("\n"); + assert.strictEqual(out[0], "Unique: foobar"); + assert.strictEqual(out.at(-2), " name: 'Baz',"); + assert.strictEqual(out.at(-1), "}"); + } + + // Doesn't capture stack trace. + { + function BadCustomError(msg) { + Error.call(this); + Object.defineProperty(this, "message", { value: msg, enumerable: false }); + Object.defineProperty(this, "name", { value: "BadCustomError", enumerable: false }); + } + Object.setPrototypeOf(BadCustomError.prototype, Error.prototype); + Object.setPrototypeOf(BadCustomError, Error); + assert.strictEqual(util.inspect(new BadCustomError("foo")), "[BadCustomError: foo]"); + } + + // Tampered error stack or name property (different type than string). + // Note: Symbols are not supported by `Error#toString()` which is called by accessing the `stack` property. + // TODO: Node 20+ changed how it handles the these cases, we should update to match such behavior. + // It should now preserve the original name and display the user-defined one as an extra property. + [ + [404, "404: foo", "[404]"], + [0, "0: foo", "[RangeError: foo]"], + [0n, "0: foo", "[RangeError: foo]"], + [null, "null: foo", "[RangeError: foo]"], + //[undefined, 'RangeError: foo', '[RangeError: foo]'], + [false, "false: foo", "[RangeError: foo]"], + ["", "foo", "[RangeError: foo]"], + //[[1, 2, 3], '1,2,3: foo', '[1,2,3]'], + ].forEach(([value, outputStart, stack]) => { + let err = new RangeError("foo"); + err.name = value; + assert( + util.inspect(err).startsWith(outputStart), + util.format( + 'The name set to %o did not result in the expected output "%s", received "%s"', + value, + outputStart, + util.inspect(err).split("\n")[0], + ), + ); + + err = new RangeError("foo"); + err.stack = value; + assert.strictEqual(util.inspect(err).split(" { ")[0], stack); + }); + + // https://github.com/nodejs/node-v0.x-archive/issues/1941 + assert.strictEqual(util.inspect({ __proto__: Date.prototype }), "Date {}"); + + // https://github.com/nodejs/node-v0.x-archive/issues/1944 + { + const d = new Date(); + d.toUTCString = null; + util.inspect(d); + } + + // Should not throw. + { + const d = new Date(); + d.toISOString = null; + util.inspect(d); + } + + // Should not throw. + { + const r = /regexp/; + r.toString = null; + util.inspect(r); + } + + // Ref: https://github.com/nodejs/node-v0.x-archive/issues/2225 + { + const x = { [util.inspect.custom]: util.inspect }; + assert( + util.inspect(x).includes("[Symbol(nodejs.util.inspect.custom)]: [Function: inspect] {\n"), + `Expected '${util.inspect(x)}' to include '[Symbol(nodejs.util.inspect.custom)]: [Function: inspect] {\n'`, + ); + } + + // `util.inspect` should display the escaped value of a key. + { + const w = { + "\\": 1, + "\\\\": 2, + "\\\\\\": 3, + "\\\\\\\\": 4, + "\n": 5, + "\r": 6, + }; + + const y = ["a", "b", "c"]; + y["\\\\"] = "d"; + y["\n"] = "e"; + y["\r"] = "f"; + + assert.strictEqual( + util.inspect(w), + "{ '\\\\': 1, '\\\\\\\\': 2, '\\\\\\\\\\\\': 3, " + "'\\\\\\\\\\\\\\\\': 4, '\\n': 5, '\\r': 6 }", + ); + assert.strictEqual(util.inspect(y), "[ 'a', 'b', 'c', '\\\\\\\\': 'd', " + "'\\n': 'e', '\\r': 'f' ]"); + } + + // Escape unpaired surrogate pairs. + { + const edgeChar = String.fromCharCode(0xd799); + + for (let charCode = 0xd800; charCode < 0xdfff; charCode++) { + const surrogate = String.fromCharCode(charCode); + + assert.strictEqual(util.inspect(surrogate), `'\\u${charCode.toString(16)}'`); + assert.strictEqual( + util.inspect(`${"a".repeat(200)}${surrogate}`), + `'${"a".repeat(200)}\\u${charCode.toString(16)}'`, + ); + assert.strictEqual( + util.inspect(`${surrogate}${"a".repeat(200)}`), + `'\\u${charCode.toString(16)}${"a".repeat(200)}'`, + ); + if (charCode < 0xdc00) { + const highSurrogate = surrogate; + const lowSurrogate = String.fromCharCode(charCode + 1024); + assert(!util.inspect(`${edgeChar}${highSurrogate}${lowSurrogate}${edgeChar}`).includes("\\u")); + assert.strictEqual( + (util.inspect(`${highSurrogate}${highSurrogate}${lowSurrogate}`).match(/\\u/g) ?? []).length, + 1, + ); + } else { + assert.strictEqual( + util.inspect(`${edgeChar}${surrogate}${edgeChar}`), + `'${edgeChar}\\u${charCode.toString(16)}${edgeChar}'`, + ); + } + } + } + + // Test util.inspect.styles and util.inspect.colors. + { + function testColorStyle(style, input) { + const colorName = util.inspect.styles[style]; + let color = ["", ""]; + if (util.inspect.colors[colorName]) color = util.inspect.colors[colorName]; + + const withoutColor = util.inspect(input, false, 0, false); + const withColor = util.inspect(input, false, 0, true); + const expect = `\u001b[${color[0]}m${withoutColor}\u001b[${color[1]}m`; + assert.strictEqual(withColor, expect, `util.inspect color for style ${style}`); + } + + testColorStyle("special", function () {}); + testColorStyle("number", 123.456); + testColorStyle("boolean", true); + testColorStyle("undefined", undefined); + testColorStyle("null", null); + testColorStyle("string", "test string"); + testColorStyle("date", new Date()); + testColorStyle("regexp", /regexp/); + } + + // An object with "hasOwnProperty" overwritten should not throw. + util.inspect({ hasOwnProperty: null }); + + // New API, accepts an "options" object. + { + const subject = { foo: "bar", hello: 31, a: { b: { c: { d: 0 } } } }; + Object.defineProperty(subject, "hidden", { enumerable: false, value: null }); + + assert.strictEqual(util.inspect(subject, { showHidden: false }).includes("hidden"), false); + assert.strictEqual(util.inspect(subject, { showHidden: true }).includes("hidden"), true); + assert.strictEqual(util.inspect(subject, { colors: false }).includes("\u001b[32m"), false); + assert.strictEqual(util.inspect(subject, { colors: true }).includes("\u001b[32m"), true); + assert.strictEqual(util.inspect(subject, { depth: 2 }).includes("c: [Object]"), true); + assert.strictEqual(util.inspect(subject, { depth: 0 }).includes("a: [Object]"), true); + assert.strictEqual(util.inspect(subject, { depth: null }).includes("{ d: 0 }"), true); + assert.strictEqual(util.inspect(subject, { depth: undefined }).includes("{ d: 0 }"), true); + } + + { + // "customInspect" option can enable/disable calling [util.inspect.custom](). + const subject = { [util.inspect.custom]: () => 123 }; + + assert.strictEqual(util.inspect(subject, { customInspect: true }).includes("123"), true); + assert.strictEqual(util.inspect(subject, { customInspect: true }).includes("inspect"), false); + assert.strictEqual(util.inspect(subject, { customInspect: false }).includes("123"), false); + assert.strictEqual(util.inspect(subject, { customInspect: false }).includes("inspect"), true); + + // A custom [util.inspect.custom]() should be able to return other Objects. + subject[util.inspect.custom] = () => ({ foo: "bar" }); + + assert.strictEqual(util.inspect(subject), "{ foo: 'bar' }"); + + subject[util.inspect.custom] = mustCall((depth, opts, inspect) => { + const clone = { ...opts }; + // This might change at some point but for now we keep the stylize function. + // The function should either be documented or an alternative should be implemented. + assert.strictEqual(typeof opts.stylize, "function"); + assert.strictEqual(opts.seen, undefined); + assert.strictEqual(opts.budget, undefined); + assert.strictEqual(opts.indentationLvl, undefined); + assert.strictEqual(opts.showHidden, false); + assert.strictEqual(inspect, util.inspect); + assert.deepStrictEqual( + new Set(Object.keys(inspect.defaultOptions).concat(["stylize"])), + new Set(Object.keys(opts)), + ); + opts.showHidden = true; + return { + [inspect.custom]: mustCall((depth, opts2) => { + assert.deepStrictEqual(clone, opts2); + }), + }; + }); + + util.inspect(subject); + + // util.inspect.custom is a shared symbol which can be accessed as + // Symbol.for("nodejs.util.inspect.custom"). + const inspect = Symbol.for("nodejs.util.inspect.custom"); + + subject[inspect] = () => ({ baz: "quux" }); + + assert.strictEqual(util.inspect(subject), "{ baz: 'quux' }"); + + subject[inspect] = (depth, opts) => { + assert.strictEqual(opts.customInspectOptions, true); + assert.strictEqual(opts.seen, null); + return {}; + }; + + util.inspect(subject, { customInspectOptions: true, seen: null }); + } + + { + const subject = { + [util.inspect.custom]: mustCall((depth, opts) => { + assert.strictEqual(depth, null); + assert.strictEqual(opts.compact, true); + }), + }; + util.inspect(subject, { depth: null, compact: true }); + } + + { + // Returning `this` from a custom inspection function works. + const subject = { + a: 123, + [util.inspect.custom]() { + return this; + }, + }; + const UIC = "nodejs.util.inspect.custom"; + assert.strictEqual(util.inspect(subject), `{\n a: 123,\n [Symbol(${UIC})]: [Function: [${UIC}]]\n}`); + } + + //! non-standard property + // Verify that it's possible to use the stylize function to manipulate input. + /*assert.strictEqual( + util.inspect([1, 2, 3], { stylize() { return 'x'; } }), + '[ x, x, x ]' + );*/ + + // Using `util.inspect` with "colors" option should produce as many lines as + // without it. + { + function testLines(input) { + const countLines = str => (str.match(/\n/g) || []).length; + const withoutColor = util.inspect(input); + const withColor = util.inspect(input, { colors: true }); + assert.strictEqual(countLines(withoutColor), countLines(withColor)); + } + + const bigArray = new Array(100).fill().map((value, index) => index); + + testLines([1, 2, 3, 4, 5, 6, 7]); + testLines(bigArray); + testLines({ foo: "bar", baz: 35, b: { a: 35 } }); + testLines({ a: { a: 3, b: 1, c: 1, d: 1, e: 1, f: 1, g: 1, h: 1 }, b: 1 }); + testLines({ + foo: "bar", + baz: 35, + b: { a: 35 }, + veryLongKey: "very long value", + evenLongerKey: ["with even longer value in array"], + }); + } + + // Test boxed primitives output the correct values. + assert.strictEqual(util.inspect(new String("test")), "[String: 'test']"); + assert.strictEqual(util.inspect(new String("test"), { colors: true }), "\u001b[32m[String: 'test']\u001b[39m"); + assert.strictEqual(util.inspect(Object(Symbol("test"))), "[Symbol: Symbol(test)]"); + assert.strictEqual(util.inspect(new Boolean(false)), "[Boolean: false]"); + assert.strictEqual(util.inspect(Object.setPrototypeOf(new Boolean(true), null)), "[Boolean (null prototype): true]"); + assert.strictEqual(util.inspect(new Number(0)), "[Number: 0]"); + + assert.strictEqual( + util.inspect( + Object.defineProperty(Object.setPrototypeOf(new Number(-0), Array.prototype), Symbol.toStringTag, { + value: "Foobar", + }), + ), + "[Number (Array): -0] [Foobar]", + ); + assert.strictEqual(util.inspect(new Number(-1.1)), "[Number: -1.1]"); + assert.strictEqual(util.inspect(new Number(13.37)), "[Number: 13.37]"); + + // Test boxed primitives with own properties. + { + const str = new String("baz"); + str.foo = "bar"; + assert.strictEqual(util.inspect(str), "[String: 'baz'] { foo: 'bar' }"); + + const bool = new Boolean(true); + bool.foo = "bar"; + assert.strictEqual(util.inspect(bool), "[Boolean: true] { foo: 'bar' }"); + + const num = new Number(13.37); + num.foo = "bar"; + assert.strictEqual(util.inspect(num), "[Number: 13.37] { foo: 'bar' }"); + + const sym = Object(Symbol("foo")); + sym.foo = "bar"; + assert.strictEqual(util.inspect(sym), "[Symbol: Symbol(foo)] { foo: 'bar' }"); + + const big = Object(BigInt(55)); + big.foo = "bar"; + assert.strictEqual(util.inspect(big), "[BigInt: 55n] { foo: 'bar' }"); + } + + // Test es6 Symbol. + if (typeof Symbol !== "undefined") { + assert.strictEqual(util.inspect(Symbol()), "Symbol()"); + assert.strictEqual(util.inspect(Symbol(123)), "Symbol(123)"); + assert.strictEqual(util.inspect(Symbol("hi")), "Symbol(hi)"); + assert.strictEqual(util.inspect([Symbol()]), "[ Symbol() ]"); + assert.strictEqual(util.inspect({ foo: Symbol() }), "{ foo: Symbol() }"); + + const options = { showHidden: true }; + let subject = {}; + + subject[Symbol("sym\nbol")] = 42; + + assert.strictEqual(util.inspect(subject), "{ [Symbol(sym\\nbol)]: 42 }"); + assert.strictEqual(util.inspect(subject, options), "{ [Symbol(sym\\nbol)]: 42 }"); + + Object.defineProperty(subject, Symbol(), { enumerable: false, value: "non-enum" }); + assert.strictEqual(util.inspect(subject), "{ [Symbol(sym\\nbol)]: 42 }"); + assert.strictEqual(util.inspect(subject, options), "{ [Symbol(sym\\nbol)]: 42, [Symbol()]: 'non-enum' }"); + + subject = [1, 2, 3]; + subject[Symbol("symbol")] = 42; + assert.strictEqual(util.inspect(subject), "[ 1, 2, 3, [Symbol(symbol)]: 42 ]"); + } + + // Test Set. + { + assert.strictEqual(util.inspect(new Set()), "Set(0) {}"); + assert.strictEqual(util.inspect(new Set([1, 2, 3])), "Set(3) { 1, 2, 3 }"); + assert.strictEqual(util.inspect(new Set([1, 2, 3]), { maxArrayLength: 1 }), "Set(3) { 1, ... 2 more items }"); + const set = new Set(["foo"]); + set.bar = 42; + assert.strictEqual(util.inspect(set, { showHidden: true }), "Set(1) { 'foo', bar: 42 }"); + } + + // Test circular Set. + { + const set = new Set(); + set.add(set); + assert.strictEqual(util.inspect(set), "<ref *1> Set(1) { [Circular *1] }"); + } + + // Test Map. + { + assert.strictEqual(util.inspect(new Map()), "Map(0) {}"); + assert.strictEqual( + util.inspect( + new Map([ + [1, "a"], + [2, "b"], + [3, "c"], + ]), + ), + "Map(3) { 1 => 'a', 2 => 'b', 3 => 'c' }", + ); + assert.strictEqual( + util.inspect( + new Map([ + [1, "a"], + [2, "b"], + [3, "c"], + ]), + { maxArrayLength: 1 }, + ), + "Map(3) { 1 => 'a', ... 2 more items }", + ); + const map = new Map([["foo", null]]); + map.bar = 42; + assert.strictEqual(util.inspect(map, true), "Map(1) { 'foo' => null, bar: 42 }"); + } + + // Test circular Map. + { + const map = new Map(); + map.set(map, "map"); + assert.strictEqual(inspect(map), "<ref *1> Map(1) { [Circular *1] => 'map' }"); + map.set(map, map); + assert.strictEqual(inspect(map), "<ref *1> Map(1) { [Circular *1] => [Circular *1] }"); + map.delete(map); + map.set("map", map); + assert.strictEqual(inspect(map), "<ref *1> Map(1) { 'map' => [Circular *1] }"); + } + + // Test multiple circular references. + { + const obj = {}; + obj.a = [obj]; + obj.b = {}; + obj.b.inner = obj.b; + obj.b.obj = obj; + + assert.strictEqual( + inspect(obj), + "<ref *1> {\n" + + " a: [ [Circular *1] ],\n" + + " b: <ref *2> { inner: [Circular *2], obj: [Circular *1] }\n" + + "}", + ); + } + + // Test Promise. + { + const resolved = Promise.resolve(3); + assert.strictEqual(util.inspect(resolved), "Promise { 3 }"); + + const rejected = Promise.reject(3); + assert.strictEqual(util.inspect(rejected), "Promise { <rejected> 3 }"); + // Squelch UnhandledPromiseRejection. + rejected.catch(() => {}); + + const pending = new Promise(() => {}); + assert.strictEqual(util.inspect(pending), "Promise { <pending> }"); + + const promiseWithProperty = Promise.resolve("foo"); + promiseWithProperty.bar = 42; + assert.strictEqual(util.inspect(promiseWithProperty), "Promise { 'foo', bar: 42 }"); + } + + // Make sure it doesn't choke on polyfills. Unlike Set/Map, there is no standard interface to + // synchronously inspect a Promise, so our techniques only work on a bonafide native Promise. + { + const oldPromise = Promise; + global.Promise = function () { + this.bar = 42; + }; + assert.strictEqual(util.inspect(new Promise()), "{ bar: 42 }"); + global.Promise = oldPromise; + } + + // Test Map iterators. + { + const map = new Map([["foo", "bar"]]); + assert.strictEqual(util.inspect(map.keys()), "[Map Iterator] { 'foo' }"); + const mapValues = map.values(); + Object.defineProperty(mapValues, Symbol.toStringTag, { value: "Foo" }); + assert.strictEqual(util.inspect(mapValues), "[Foo] [Map Iterator] { 'bar' }"); + map.set("A", "B!"); + assert.strictEqual( + util.inspect(map.entries(), { maxArrayLength: 1 }), + "[Map Entries] { [ 'foo', 'bar' ], ... 1 more item }", + ); + // Make sure the iterator doesn't get consumed. + const keys = map.keys(); + assert.strictEqual(util.inspect(keys), "[Map Iterator] { 'foo', 'A' }"); + assert.strictEqual(util.inspect(keys), "[Map Iterator] { 'foo', 'A' }"); + keys.extra = true; + assert.strictEqual(util.inspect(keys, { maxArrayLength: 0 }), "[Map Iterator] { ... 2 more items, extra: true }"); + } + + // Test Set iterators. + { + const aSet = new Set([1]); + assert.strictEqual(util.inspect(aSet.entries(), { compact: false }), "[Set Entries] {\n [\n 1,\n 1\n ]\n}"); + aSet.add(3); + assert.strictEqual(util.inspect(aSet.keys()), "[Set Iterator] { 1, 3 }"); + assert.strictEqual(util.inspect(aSet.values()), "[Set Iterator] { 1, 3 }"); + const setEntries = aSet.entries(); + Object.defineProperty(setEntries, Symbol.toStringTag, { value: "Foo" }); + assert.strictEqual(util.inspect(setEntries), "[Foo] [Set Entries] { [ 1, 1 ], [ 3, 3 ] }"); + // Make sure the iterator doesn't get consumed. + const keys = aSet.keys(); + Object.defineProperty(keys, Symbol.toStringTag, { value: null }); + assert.strictEqual(util.inspect(keys), "[Set Iterator] { 1, 3 }"); + assert.strictEqual(util.inspect(keys), "[Set Iterator] { 1, 3 }"); + keys.extra = true; + assert.strictEqual(util.inspect(keys, { maxArrayLength: 1 }), "[Set Iterator] { 1, ... 1 more item, extra: true }"); + } + + // Minimal inspection should still return as much information as possible about + // the constructor and Symbol.toStringTag. + { + class Foo { + get [Symbol.toStringTag]() { + return "ABC"; + } + } + const a = new Foo(); + assert.strictEqual(inspect(a, { depth: -1 }), "Foo [ABC] {}"); + a.foo = true; + assert.strictEqual(inspect(a, { depth: -1 }), "[Foo [ABC]]"); + Object.defineProperty(a, Symbol.toStringTag, { + value: "Foo", + configurable: true, + writable: true, + }); + assert.strictEqual(inspect(a, { depth: -1 }), "[Foo]"); + delete a[Symbol.toStringTag]; + Object.setPrototypeOf(a, null); + // TODO: null prototypes + // assert.strictEqual(inspect(a, { depth: -1 }), '[Foo: null prototype]'); + assert.strictEqual(inspect(a, { depth: -1 }), "[Object: null prototype]"); + delete a.foo; + assert.strictEqual( + inspect(a, { depth: -1 }), + // TODO: '[Foo: null prototype] {}'); + "[Object: null prototype] {}", + ); + Object.defineProperty(a, Symbol.toStringTag, { + value: "ABC", + configurable: true, + }); + assert.strictEqual( + inspect(a, { depth: -1 }), + // TODO: '[Foo: null prototype] [ABC] {}' + "[Object: null prototype] [ABC] {}", + ); + Object.defineProperty(a, Symbol.toStringTag, { + value: "Foo", + configurable: true, + }); + assert.strictEqual(inspect(a, { depth: -1 }), "[Object: null prototype] [Foo] {}"); + } + + // Test alignment of items in container. + // Assumes that the first numeric character is the start of an item. + { + function checkAlignment(container, start, lineX, end) { + const lines = util.inspect(container).split("\n"); + lines.forEach((line, i) => { + if (i === 0) { + assert.strictEqual(line, start); + } else if (i === lines.length - 1) { + assert.strictEqual(line, end); + } else { + let expected = lineX.replace("X", i - 1); + if (i !== lines.length - 2) expected += ","; + assert.strictEqual(line, expected); + } + }); + } + + const bigArray = []; + for (let i = 0; i < 100; i++) { + bigArray.push(i); + } + + const obj = {}; + bigArray.forEach(prop => { + obj[prop] = null; + }); + + checkAlignment(obj, "{", " 'X': null", "}"); + checkAlignment(new Set(bigArray), "Set(100) {", " X", "}"); + checkAlignment(new Map(bigArray.map(number => [number, null])), "Map(100) {", " X => null", "}"); + } + + // Test display of constructors. + { + class ObjectSubclass {} + class ArraySubclass extends Array {} + class SetSubclass extends Set {} + class MapSubclass extends Map {} + class PromiseSubclass extends Promise {} + class SymbolNameClass { + static name = Symbol("name"); + } + + const x = new ObjectSubclass(); + x.foo = 42; + assert.strictEqual(util.inspect(x), "ObjectSubclass { foo: 42 }"); + assert.strictEqual(util.inspect(new ArraySubclass(1, 2, 3)), "ArraySubclass(3) [ 1, 2, 3 ]"); + assert.strictEqual(util.inspect(new SetSubclass([1, 2, 3])), "SetSubclass(3) [Set] { 1, 2, 3 }"); + assert.strictEqual(util.inspect(new MapSubclass([["foo", 42]])), "MapSubclass(1) [Map] { 'foo' => 42 }"); + assert.strictEqual(util.inspect(new PromiseSubclass(() => {})), "PromiseSubclass [Promise] { <pending> }"); + assert.strictEqual(util.inspect(new SymbolNameClass()), "Symbol(name) {}"); + assert.strictEqual( + util.inspect({ a: { b: new ArraySubclass([1, [2], 3]) } }, { depth: 1 }), + "{ a: { b: [ArraySubclass] } }", + ); + assert.strictEqual( + util.inspect(Object.setPrototypeOf(x, null)), + // TODO: '[ObjectSubclass: null prototype] { foo: 42 }' + "[Object: null prototype] { foo: 42 }", + ); + } + + // Empty and circular before depth. + { + const arr = [[[[]]]]; + assert.strictEqual(util.inspect(arr), "[ [ [ [] ] ] ]"); + arr[0][0][0][0] = []; + assert.strictEqual(util.inspect(arr), "[ [ [ [Array] ] ] ]"); + arr[0][0][0] = {}; + assert.strictEqual(util.inspect(arr), "[ [ [ {} ] ] ]"); + arr[0][0][0] = { a: 2 }; + assert.strictEqual(util.inspect(arr), "[ [ [ [Object] ] ] ]"); + arr[0][0][0] = arr; + assert.strictEqual(util.inspect(arr), "<ref *1> [ [ [ [Circular *1] ] ] ]"); + arr[0][0][0] = arr[0][0]; + assert.strictEqual(util.inspect(arr), "[ [ <ref *1> [ [Circular *1] ] ] ]"); + } + + // Corner cases. + { + const x = { constructor: 42 }; + assert.strictEqual(util.inspect(x), "{ constructor: 42 }"); + } + + { + const x = {}; + Object.defineProperty(x, "constructor", { + get: function () { + throw new Error("should not access constructor"); + }, + enumerable: true, + }); + assert.strictEqual(util.inspect(x), "{ constructor: [Getter] }"); + } + + { + const x = new (function () {})(); + assert.strictEqual(util.inspect(x), "{}"); + } + + { + const x = { __proto__: null }; + assert.strictEqual(util.inspect(x), "[Object: null prototype] {}"); + } + + { + const x = []; + x[""] = 1; + assert.strictEqual(util.inspect(x), "[ '': 1 ]"); + } + + // The following maxArrayLength tests were introduced after v6.0.0 was released. + // Do not backport to v5/v4 unless all of + // https://github.com/nodejs/node/pull/6334 is backported. + { + const x = new Array(101).fill(); + assert(util.inspect(x).endsWith("1 more item\n]")); + assert(!util.inspect(x, { maxArrayLength: 101 }).endsWith("1 more item\n]")); + assert.strictEqual(util.inspect(x, { maxArrayLength: -1 }), "[ ... 101 more items ]"); + assert.strictEqual(util.inspect(x, { maxArrayLength: 0 }), "[ ... 101 more items ]"); + } + + { + const x = Array(101); + assert.strictEqual(util.inspect(x, { maxArrayLength: 0 }), "[ ... 101 more items ]"); + assert(!util.inspect(x, { maxArrayLength: null }).endsWith("1 more item\n]")); + assert(!util.inspect(x, { maxArrayLength: Infinity }).endsWith("1 more item ]")); + } + + { + const x = new Uint8Array(101); + assert(util.inspect(x).endsWith("1 more item\n]")); + assert(!util.inspect(x, { maxArrayLength: 101 }).includes("1 more item")); + assert.strictEqual(util.inspect(x, { maxArrayLength: 0 }), "Uint8Array(101) [ ... 101 more items ]"); + assert(!util.inspect(x, { maxArrayLength: null }).includes("1 more item")); + assert(util.inspect(x, { maxArrayLength: Infinity }).endsWith(" 0, 0\n]")); + } + + { + const obj = { foo: "abc", bar: "xyz" }; + const oneLine = util.inspect(obj, { breakLength: Infinity }); + // Subtract four for the object's two curly braces and two spaces of padding. + // Add one more to satisfy the strictly greater than condition in the code. + const breakpoint = oneLine.length - 5; + const twoLines = util.inspect(obj, { breakLength: breakpoint }); + + assert.strictEqual(oneLine, "{ foo: 'abc', bar: 'xyz' }"); + assert.strictEqual(util.inspect(obj, { breakLength: breakpoint + 1 }), twoLines); + assert.strictEqual(twoLines, "{\n foo: 'abc',\n bar: 'xyz'\n}"); + } + + // util.inspect.defaultOptions tests. + { + const arr = new Array(101).fill(); + const obj = { a: { a: { a: { a: 1 } } } }; + + const oldOptions = { ...util.inspect.defaultOptions }; + + // Set single option through property assignment. + util.inspect.defaultOptions.maxArrayLength = null; + assert.doesNotMatch(util.inspect(arr), /1 more item/); + util.inspect.defaultOptions.maxArrayLength = oldOptions.maxArrayLength; + assert.match(util.inspect(arr), /1 more item/); + util.inspect.defaultOptions.depth = null; + assert.doesNotMatch(util.inspect(obj), /Object/); + util.inspect.defaultOptions.depth = oldOptions.depth; + assert.match(util.inspect(obj), /Object/); + assert.strictEqual(JSON.stringify(util.inspect.defaultOptions), JSON.stringify(oldOptions)); + + // Set multiple options through object assignment. + util.inspect.defaultOptions = { maxArrayLength: null, depth: 2 }; + assert.doesNotMatch(util.inspect(arr), /1 more item/); + assert.match(util.inspect(obj), /Object/); + util.inspect.defaultOptions = oldOptions; + assert.match(util.inspect(arr), /1 more item/); + assert.match(util.inspect(obj), /Object/); + assert.strictEqual(JSON.stringify(util.inspect.defaultOptions), JSON.stringify(oldOptions)); + + assert.throws( + () => { + util.inspect.defaultOptions = null; + }, + { + code: "ERR_INVALID_ARG_TYPE", + name: "TypeError", + message: 'The "options" argument must be of type object. ' + "Received null", + }, + ); + + assert.throws( + () => { + util.inspect.defaultOptions = "bad"; + }, + { + code: "ERR_INVALID_ARG_TYPE", + name: "TypeError", + message: 'The "options" argument must be of type object. ' + "Received type string ('bad')", + }, + ); + } + + util.inspect(process); + + // Setting custom inspect property to a non-function should do nothing. + { + const obj = { [util.inspect.custom]: "fhqwhgads" }; + assert.strictEqual(util.inspect(obj), "{ [Symbol(nodejs.util.inspect.custom)]: 'fhqwhgads' }"); + } + + { + // @@toStringTag + const obj = { [Symbol.toStringTag]: "a" }; + assert.strictEqual(util.inspect(obj), "{ [Symbol(Symbol.toStringTag)]: 'a' }"); + Object.defineProperty(obj, Symbol.toStringTag, { + value: "a", + enumerable: false, + }); + assert.strictEqual(util.inspect(obj), "Object [a] {}"); + assert.strictEqual(util.inspect(obj, { showHidden: true }), "{ [Symbol(Symbol.toStringTag)]: 'a' }"); + + class Foo { + constructor() { + this.foo = "bar"; + } + + get [Symbol.toStringTag]() { + return this.foo; + } + } + + assert.strictEqual( + util.inspect(Object.create(null, { [Symbol.toStringTag]: { value: "foo" } })), + "[Object: null prototype] [foo] {}", + ); + + assert.strictEqual(util.inspect(new Foo()), "Foo [bar] { foo: 'bar' }"); + + assert.strictEqual(util.inspect(new (class extends Foo {})()), "Foo [bar] { foo: 'bar' }"); + + assert.strictEqual( + util.inspect( + Object.create( + { __proto__: Foo.prototype }, + { + foo: { value: "bar", enumerable: true }, + }, + ), + ), + "Foo [bar] { foo: 'bar' }", + ); + + class ThrowingClass { + get [Symbol.toStringTag]() { + throw new Error("toStringTag error"); + } + } + + assert.throws(() => util.inspect(new ThrowingClass()), /toStringTag error/); + + class NotStringClass { + get [Symbol.toStringTag]() { + return null; + } + } + + assert.strictEqual(util.inspect(new NotStringClass()), "NotStringClass {}"); + } + + { + const o = { + a: [ + 1, + 2, + [ + [ + "Lorem ipsum dolor\nsit amet,\tconsectetur adipiscing elit, sed do " + + "eiusmod tempor incididunt ut labore et dolore magna aliqua.", + "test", + "foo", + ], + ], + 4, + ], + b: new Map([ + ["za", 1], + ["zb", "test"], + ]), + }; + + let out = util.inspect(o, { compact: true, depth: 5, breakLength: 80 }); + let expect = [ + "{ a:", + " [ 1,", + " 2,", + " [ [ 'Lorem ipsum dolor\\nsit amet,\\tconsectetur adipiscing elit, " + + "sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.',", + " 'test',", + " 'foo' ] ],", + " 4 ],", + " b: Map(2) { 'za' => 1, 'zb' => 'test' } }", + ].join("\n"); + assert.strictEqual(out, expect); + + out = util.inspect(o, { compact: false, depth: 5, breakLength: 60 }); + expect = [ + "{", + " a: [", + " 1,", + " 2,", + " [", + " [", + " 'Lorem ipsum dolor\\n' +", + " 'sit amet,\\tconsectetur adipiscing elit, sed do eiusmod " + + "tempor incididunt ut labore et dolore magna aliqua.',", + " 'test',", + " 'foo'", + " ]", + " ],", + " 4", + " ],", + " b: Map(2) {", + " 'za' => 1,", + " 'zb' => 'test'", + " }", + "}", + ].join("\n"); + assert.strictEqual(out, expect); + + out = util.inspect(o.a[2][0][0], { compact: false, breakLength: 30 }); + expect = [ + "'Lorem ipsum dolor\\n' +", + " 'sit amet,\\tconsectetur adipiscing elit, sed do eiusmod tempor " + + "incididunt ut labore et dolore magna aliqua.'", + ].join("\n"); + assert.strictEqual(out, expect); + + out = util.inspect("12345678901234567890123456789012345678901234567890", { compact: false, breakLength: 3 }); + expect = "'12345678901234567890123456789012345678901234567890'"; + assert.strictEqual(out, expect); + + out = util.inspect("12 45 78 01 34 67 90 23 56 89 123456789012345678901234567890", { + compact: false, + breakLength: 3, + }); + expect = ["'12 45 78 01 34 67 90 23 56 89 123456789012345678901234567890'"].join("\n"); + assert.strictEqual(out, expect); + + o.a = () => {}; + o.b = new Number(3); + out = util.inspect(o, { compact: false, breakLength: 3 }); + expect = ["{", " a: [Function (anonymous)],", " b: [Number: 3]", "}"].join("\n"); + assert.strictEqual(out, expect); + + out = util.inspect(o, { compact: false, breakLength: 3, showHidden: true }); + expect = [ + "{", + " a: [Function (anonymous)] {", + " [length]: 0,", + " [name]: ''", + " },", + " b: [Number: 3]", + "}", + ].join("\n"); + assert.strictEqual(out, expect); + + o[util.inspect.custom] = () => 42; + out = util.inspect(o, { compact: false, breakLength: 3 }); + expect = "42"; + assert.strictEqual(out, expect); + + o[util.inspect.custom] = () => "12 45 78 01 34 67 90 23"; + out = util.inspect(o, { compact: false, breakLength: 3 }); + expect = "12 45 78 01 34 67 90 23"; + assert.strictEqual(out, expect); + + o[util.inspect.custom] = () => ({ a: "12 45 78 01 34 67 90 23" }); + out = util.inspect(o, { compact: false, breakLength: 3 }); + expect = "{\n a: '12 45 78 01 34 67 90 23'\n}"; + assert.strictEqual(out, expect); + } + + // Check compact indentation. + { + const typed = new Uint8Array(); + typed.buffer.foo = true; + const set = new Set([[1, 2]]); + const promise = Promise.resolve([[1, set]]); + const map = new Map([[promise, typed]]); + map.set(set.values(), map.values()); + + let out = util.inspect(map, { compact: false, showHidden: true, depth: 9 }); + let expected = [ + "Map(2) {", + " Promise {", + " [", + " [", + " 1,", + " Set(1) {", + " [", + " 1,", + " 2,", + " [length]: 2", + " ]", + " },", + " [length]: 2", + " ],", + " [length]: 1", + " ]", + " } => Uint8Array(0) [", + " [BYTES_PER_ELEMENT]: 1,", + " [length]: 0,", + " [byteLength]: 0,", + " [byteOffset]: 0,", + " [buffer]: ArrayBuffer {", + " byteLength: 0,", + " foo: true", + " }", + " ],", + " [Set Iterator] {", + " [", + " 1,", + " 2,", + " [length]: 2", + " ],", + " [Symbol(Symbol.toStringTag)]: 'Set Iterator'", + " } => <ref *1> [Map Iterator] {", + " Uint8Array(0) [", + " [BYTES_PER_ELEMENT]: 1,", + " [length]: 0,", + " [byteLength]: 0,", + " [byteOffset]: 0,", + " [buffer]: ArrayBuffer {", + " byteLength: 0,", + " foo: true", + " }", + " ],", + " [Circular *1],", + " [Symbol(Symbol.toStringTag)]: 'Map Iterator'", + " }", + "}", + ].join("\n"); + + assert.strict.equal(out, expected); + + out = util.inspect(map, { compact: 2, showHidden: true, depth: 9 }); + + expected = [ + "Map(2) {", + " Promise {\n" + " [", + " [", + " 1,", + " Set(1) { [ 1, 2, [length]: 2 ] },", + " [length]: 2", + " ],", + " [length]: 1", + " ]", + " } => Uint8Array(0) [", + " [BYTES_PER_ELEMENT]: 1,", + " [length]: 0,", + " [byteLength]: 0,", + " [byteOffset]: 0,", + " [buffer]: ArrayBuffer { byteLength: 0, foo: true }", + " ],", + " [Set Iterator] {\n" + " [ 1, 2, [length]: 2 ],", + " [Symbol(Symbol.toStringTag)]: 'Set Iterator'\n" + + " } => <ref *1> [Map Iterator] {\n" + + " Uint8Array(0) [", + " [BYTES_PER_ELEMENT]: 1,", + " [length]: 0,", + " [byteLength]: 0,", + " [byteOffset]: 0,", + " [buffer]: ArrayBuffer { byteLength: 0, foo: true }", + " ],", + " [Circular *1],", + " [Symbol(Symbol.toStringTag)]: 'Map Iterator'\n" + " }", + "}", + ].join("\n"); + + assert.strict.equal(out, expected); + + out = util.inspect(map, { + showHidden: true, + depth: 9, + breakLength: 4, + compact: true, + }); + + expected = [ + "Map(2) {", + " Promise {", + " [ [ 1,", + " Set(1) {", + " [ 1,", + " 2,", + " [length]: 2 ] },", + " [length]: 2 ],", + " [length]: 1 ] } => Uint8Array(0) [", + " [BYTES_PER_ELEMENT]: 1,", + " [length]: 0,", + " [byteLength]: 0,", + " [byteOffset]: 0,", + " [buffer]: ArrayBuffer {", + " byteLength: 0,", + " foo: true } ],", + " [Set Iterator] {", + " [ 1,", + " 2,", + " [length]: 2 ],", + " [Symbol(Symbol.toStringTag)]:", + " 'Set Iterator' } => <ref *1> [Map Iterator] {", + " Uint8Array(0) [", + " [BYTES_PER_ELEMENT]: 1,", + " [length]: 0,", + " [byteLength]: 0,", + " [byteOffset]: 0,", + " [buffer]: ArrayBuffer {", + " byteLength: 0,", + " foo: true } ],", + " [Circular *1],", + " [Symbol(Symbol.toStringTag)]:", + " 'Map Iterator' } }", + ].join("\n"); + + assert.strict.equal(out, expected); + } + + { + // Test WeakMap && WeakSet + const obj = {}; + const arr = []; + const weakMap = new WeakMap([ + [obj, arr], + [arr, obj], + ]); + let out = util.inspect(weakMap, { showHidden: true }); + // TODO: WeakMap internals + // let expect = 'WeakMap { [ [length]: 0 ] => {}, {} => [ [length]: 0 ] }'; + let expect = "WeakMap { }"; + assert.strictEqual(out, expect); + + out = util.inspect(weakMap); + expect = "WeakMap { <items unknown> }"; + assert.strictEqual(out, expect); + + out = util.inspect(weakMap, { maxArrayLength: 0, showHidden: true }); + // expect = 'WeakMap { ... 2 more items }'; + expect = "WeakMap { }"; + assert.strictEqual(out, expect); + + weakMap.extra = true; + out = util.inspect(weakMap, { maxArrayLength: 1, showHidden: true }); + // It is not possible to determine the output reliable. + // expect = 'WeakMap { [ [length]: 0 ] => {}, ... 1 more item, extra: true }'; + // let expectAlt = 'WeakMap { {} => [ [length]: 0 ], ... 1 more item, extra: true }'; + assert( + out === "WeakMap { extra: true }", //out === expect || out === expectAlt, + `Found: "${out}"\nrather than: "WeakMap { extra: true }"`, + ); //"${expect}"\nor: "${expectAlt}"`); + + // Test WeakSet + arr.push(1); + const weakSet = new WeakSet([obj, arr]); + out = util.inspect(weakSet, { showHidden: true }); + // TODO: WeakSet internals + // expect = 'WeakSet { [ 1, [length]: 1 ], {} }'; + expect = "WeakSet { }"; + assert.strictEqual(out, expect); + + out = util.inspect(weakSet); + expect = "WeakSet { <items unknown> }"; + assert.strictEqual(out, expect); + + out = util.inspect(weakSet, { maxArrayLength: -2, showHidden: true }); + //expect = 'WeakSet { ... 2 more items }'; + expect = "WeakSet { }"; + assert.strictEqual(out, expect); + + weakSet.extra = true; + out = util.inspect(weakSet, { maxArrayLength: 1, showHidden: true }); + // It is not possible to determine the output reliable. + // expect = 'WeakSet { {}, ... 1 more item, extra: true }'; + // expectAlt = 'WeakSet { [ 1, [length]: 1 ], ... 1 more item, extra: true }'; + assert( + out === "WeakSet { extra: true }", //out === expect || out === expectAlt, + `Found: "${out}"\nrather than: "WeakSet { extra: true }"`, + ); //"${expect}"\nor: "${expectAlt}"`); + // Keep references to the WeakMap entries, otherwise they could be GCed too early. + assert(obj && arr); + } + + { + // Test argument objects. + const args = (function () { + return arguments; + })("a"); + assert.strictEqual(util.inspect(args), "[Arguments] { '0': 'a' }"); + } +}); + +test("util.inspect stack overflow handling", () => { + // Test that a long linked list can be inspected without throwing an error. + const list = {}; + let head = list; + // A linked list of length 100k should be inspectable in some way, even though + // the real cutoff value is much lower than 100k. + for (let i = 0; i < 10000; i++) head = head.next = {}; + assert.strictEqual(util.inspect(list), "{ next: { next: { next: [Object] } } }"); + const longList = util.inspect(list, { depth: Infinity }); + const match = longList.match(/next/g); + //? The current limit is set to a fixed 1000, as higher values cause + //? the creation of unmanageably large strings which can crash or hang. + //? For comparison, despite their test checking for up to 10000, + //? Node will generally cutoff with a stack overflow at around 900. + assert(match.length > 500 && match.length < 10000); + assert(longList.includes("[Object: Inspection interrupted prematurely. Maximum call stack size exceeded.]")); +}); + +test("no assertion failures 3", () => { + // Do not escape single quotes if no double quote or backtick is present. + assert.strictEqual(util.inspect("'"), '"\'"'); + assert.strictEqual(util.inspect("\"'"), "`\"'`"); + assert.strictEqual(util.inspect("\"'${a}"), "'\"\\'${a}'"); + + // Errors should visualize as much information as possible. + // If the name is not included in the stack, visualize it as well. + [ + [class Foo extends TypeError {}, "test"], + [class Foo extends TypeError {}, undefined], + [class BarError extends Error {}, "test"], + [ + class BazError extends Error { + get name() { + return "BazError"; + } + }, + undefined, + ], + ].forEach(([Class, message], i) => { + const foo = new Class(message); + const extra = Class.name.includes("Error") ? "" : ` [${foo.name}]`; + assert( + util.inspect(foo).startsWith(`${Class.name}${extra}${message ? `: ${message}` : "\n"}`), + util.inspect(foo) + "\n...did not start with: " + `${Class.name}${extra}${message ? `: ${message}` : "\n"}`, + ); + Object.defineProperty(foo, Symbol.toStringTag, { + value: "WOW", + writable: true, + configurable: true, + }); + const stack = foo.stack; + foo.stack = "This is a stack"; + assert( + util.inspect(foo).startsWith("[This is a stack]"), + `Expected to start with: "[This is a stack]"\nFound: "${util.inspect(foo)}"`, + ); + foo.stack = stack; + assert( + util.inspect(foo).startsWith(`${Class.name} [WOW]${extra}${message ? `: ${message}` : "\n"}`), + util.inspect(foo), + ); + Object.setPrototypeOf(foo, null); + assert( + util.inspect(foo).startsWith( + // TODO: null prototypes + // `[${name}: null prototype] [WOW]${message ? `: ${message}` : '\n'}` + "[Object: null prototype] [WOW] {", + ), + util.inspect(foo), + ); + foo.bar = true; + delete foo[Symbol.toStringTag]; + let tmp = util.inspect(foo); + assert( + tmp.startsWith( + // TODO: null prototypes + // `[${name}: null prototype]${message ? `: ${message}` : '\n'}`), + "[Error: null prototype] {", + ) && tmp.includes("bar: true"), + tmp, + ); + foo.stack = "This is a stack"; + tmp = util.inspect(foo); + assert( + tmp.startsWith( + // TODO: null prototypes + // '[[Error: null prototype]: This is a stack] { bar: true }' + "[Error: null prototype] {", + ) && tmp.includes("bar: true"), + tmp, + ); + foo.stack = stack.split("\n")[0]; + tmp = util.inspect(foo); + assert( + tmp.startsWith( + // TODO: null prototypes + // `[[${name}: null prototype]${message ? `:\n ${message}` : ''}] { bar: true }` + "[Error: null prototype] {", + ) && tmp.includes("bar: true"), + tmp, + ); + }); + + // Verify that classes are properly inspected. + [ + // The whitespace is intentional. + [class {}, "[class (anonymous)]"], + [ + class extends Error { + log() {} + }, + "[class (anonymous) extends Error]", + ], + [ + class A { + constructor(a) { + this.a = a; + } + log() { + return this.a; + } + }, + "[class A]", + ], + [ + class // Random { // comments /* */ are part of the toString() result + äß /**/ + extends /*{*/ TypeError {}, + "[class äß extends TypeError]", + ], + /* The whitespace and new line is intended! */ + // Foobar !!! + [ + class X extends /****/ Error { + // More comments + }, + "[class X extends Error]", + ], + ].forEach(([clazz, string]) => { + const inspected = util.inspect(clazz); + assert.strictEqual(inspected, string); + Object.defineProperty(clazz, Symbol.toStringTag, { + value: "Woohoo", + }); + const parts = inspected.slice(0, -1).split(" "); + const [, name, ...rest] = parts; + rest.unshift("[Woohoo]"); + if (rest.length) { + rest[rest.length - 1] += "]"; + } + assert.strictEqual(util.inspect(clazz), ["[class", name, ...rest].join(" ")); + if (rest.length) { + rest[rest.length - 1] = rest[rest.length - 1].slice(0, -1); + rest.length = 1; + } + Object.setPrototypeOf(clazz, Map.prototype); + assert.strictEqual(util.inspect(clazz), ["[class", name, "[Map]", ...rest].join(" ") + "]"); + Object.setPrototypeOf(clazz, null); + assert.strictEqual(util.inspect(clazz), ["[class", name, ...rest, "extends [null prototype]]"].join(" ")); + Object.defineProperty(clazz, "name", { value: "Foo" }); + const res = ["[class", "Foo", ...rest, "extends [null prototype]]"].join(" "); + assert.strictEqual(util.inspect(clazz), res); + clazz.foo = true; + assert.strictEqual(util.inspect(clazz), `${res} { foo: true }`); + }); + + // "class" properties should not be detected as "class". + { + let obj = { class() {} }; + assert.strictEqual(util.inspect(obj), "{ class: [Function: class] }"); + obj = { class: () => {} }; + assert.strictEqual(util.inspect(obj), "{ class: [Function: class] }"); + obj = { ["class Foo {}"]() {} }; + assert.strictEqual(util.inspect(obj), "{ 'class Foo {}': [Function: class Foo {}] }"); + function Foo() {} + Object.defineProperty(Foo, "toString", { value: () => "class Foo {}" }); + assert.strictEqual(util.inspect(Foo), "[Function: Foo]"); + function fn() {} + Object.defineProperty(fn, "name", { value: "class Foo {}" }); + assert.strictEqual(util.inspect(fn), "[Function: class Foo {}]"); + } + + // Verify that throwing in valueOf and toString still produces nice results. + [ + [new String(55), "[String: '55']"], + [new Boolean(true), "[Boolean: true]"], + [new Number(55), "[Number: 55]"], + [Object(BigInt(55)), "[BigInt: 55n]"], + [Object(Symbol("foo")), "[Symbol: Symbol(foo)]"], + [function () {}, "[Function (anonymous)]"], + [() => {}, "[Function (anonymous)]"], + [[1, 2], "[ 1, 2 ]"], + [[, , 5, , , ,], "[ <2 empty items>, 5, <3 empty items> ]"], + [{ a: 5 }, "{ a: 5 }"], + [new Set([1, 2]), "Set(2) { 1, 2 }"], + [new Map([[1, 2]]), "Map(1) { 1 => 2 }"], + [new Set([1, 2]).entries(), "[Set Entries] { [ 1, 1 ], [ 2, 2 ] }"], + [new Map([[1, 2]]).keys(), "[Map Iterator] { 1 }"], + [new Date(2000), "1970-01-01T00:00:02.000Z"], + [new Uint8Array(2), "Uint8Array(2) [ 0, 0 ]"], + [new Promise(resolve => setTimeout(resolve, 10)), "Promise { <pending> }"], + [new WeakSet(), "WeakSet { <items unknown> }"], + [new WeakMap(), "WeakMap { <items unknown> }"], + [/foobar/g, "/foobar/g"], + ].forEach(([value, expected]) => { + Object.defineProperty(value, "valueOf", { + get() { + throw new Error("valueOf"); + }, + }); + Object.defineProperty(value, "toString", { + get() { + throw new Error("toString"); + }, + }); + assert.strictEqual(util.inspect(value), expected); + value.foo = "bar"; + assert.notStrictEqual(util.inspect(value), expected); + delete value.foo; + value[Symbol("foo")] = "yeah"; + assert.notStrictEqual(util.inspect(value), expected); + }); + + // Verify that having no prototype still produces nice results. + [ + [[1, 3, 4], "[Array(3): null prototype] [ 1, 3, 4 ]"], + [/foobar/, "[RegExp: null prototype] /foobar/"], + [new Set([1, 2]), "[Set(2): null prototype] { 1, 2 }"], + [new Map([[1, 2]]), "[Map(1): null prototype] { 1 => 2 }"], + [new Promise(resolve => setTimeout(resolve, 10)), "[Promise: null prototype] { <pending> }"], + [new WeakSet(), "[WeakSet: null prototype] { <items unknown> }"], + [new WeakMap(), "[WeakMap: null prototype] { <items unknown> }"], + [new Uint8Array(2), "[Uint8Array(2): null prototype] [ 0, 0 ]"], + [new Uint16Array(2), "[Uint16Array(2): null prototype] [ 0, 0 ]"], + [new Uint32Array(2), "[Uint32Array(2): null prototype] [ 0, 0 ]"], + [new Int8Array(2), "[Int8Array(2): null prototype] [ 0, 0 ]"], + [new Int16Array(2), "[Int16Array(2): null prototype] [ 0, 0 ]"], + [new Int32Array(2), "[Int32Array(2): null prototype] [ 0, 0 ]"], + [new Float32Array(2), "[Float32Array(2): null prototype] [ 0, 0 ]"], + [new Float64Array(2), "[Float64Array(2): null prototype] [ 0, 0 ]"], + [new BigInt64Array(2), "[BigInt64Array(2): null prototype] [ 0n, 0n ]"], + [new BigUint64Array(2), "[BigUint64Array(2): null prototype] [ 0n, 0n ]"], + [ + new ArrayBuffer(4), + "[ArrayBuffer: null prototype] {\n [Uint8Contents]: <00 00 00 00>,\n byteLength: undefined\n}", + ], + [ + new DataView(new ArrayBuffer(4)), + "[DataView: null prototype] {\n byteLength: undefined,\n byteOffset: undefined,\n buffer: undefined\n}", + ], + [ + new SharedArrayBuffer(2), + "[SharedArrayBuffer: null prototype] {\n [Uint8Contents]: <00 00>,\n byteLength: undefined\n}", + ], + [new Date("Sun, 14 Feb 2010 11:48:40 GMT"), "[Date: null prototype] 2010-02-14T11:48:40.000Z"], + ].forEach(([value, expected]) => { + assert.strictEqual(util.inspect(Object.setPrototypeOf(value, null)), expected); + value.foo = "bar"; + assert.notStrictEqual(util.inspect(value), expected); + delete value.foo; + value[Symbol("foo")] = "yeah"; + assert.notStrictEqual(util.inspect(value), expected); + }); + + // Verify that subclasses with and without prototype produce nice results. + [ + [RegExp, ["foobar", "g"], "/foobar/g"], + [WeakSet, [[{}]], "{ <items unknown> }"], + [WeakMap, [[[{}, {}]]], "{ <items unknown> }"], + [BigInt64Array, [10], "[\n 0n, 0n, 0n, 0n, 0n,\n 0n, 0n, 0n, 0n, 0n\n]"], + [Date, ["Sun, 14 Feb 2010 11:48:40 GMT"], "2010-02-14T11:48:40.000Z"], + [Date, ["invalid_date"], "Invalid Date"], + ].forEach(([base, input, rawExpected]) => { + class Foo extends base {} + const value = new Foo(...input); + const symbol = value[Symbol.toStringTag]; + const size = base.name.includes("Array") ? `(${input[0]})` : ""; + const expected = `Foo${size} ${symbol ? `[${symbol}] ` : ""}${rawExpected}`; + const expectedWithoutProto = `[${base.name}${size}: null prototype] ${rawExpected}`; + assert.strictEqual(util.inspect(value), expected); + value.foo = "bar"; + assert.notStrictEqual(util.inspect(value), expected); + delete value.foo; + assert.strictEqual(util.inspect(Object.setPrototypeOf(value, null)), expectedWithoutProto); + value.foo = "bar"; + let res = util.inspect(value); + assert.notStrictEqual(res, expectedWithoutProto); + assert.match(res, /foo: 'bar'/); + delete value.foo; + value[Symbol("foo")] = "yeah"; + res = util.inspect(value); + assert.notStrictEqual(res, expectedWithoutProto); + assert.match(res, /\[Symbol\(foo\)]: 'yeah'/); + }); + + assert.strictEqual(inspect(1n), "1n"); + assert.strictEqual(inspect(Object(-1n)), "[BigInt: -1n]"); + assert.strictEqual(inspect(Object(13n)), "[BigInt: 13n]"); + assert.strictEqual(inspect(new BigInt64Array([0n])), "BigInt64Array(1) [ 0n ]"); + assert.strictEqual(inspect(new BigUint64Array([0n])), "BigUint64Array(1) [ 0n ]"); + + // Verify non-enumerable keys get escaped. + { + const obj = {}; + Object.defineProperty(obj, "Non\nenumerable\tkey", { value: true }); + assert.strictEqual(util.inspect(obj, { showHidden: true }), "{ [Non\\nenumerable\\tkey]: true }"); + } + + // Check for special colors. + { + const special = inspect.colors[inspect.styles.special]; + const string = inspect.colors[inspect.styles.string]; + + assert.strictEqual( + inspect(new WeakSet(), { colors: true }), + `WeakSet { \u001b[${special[0]}m<items unknown>\u001b[${special[1]}m }`, + ); + assert.strictEqual( + inspect(new WeakMap(), { colors: true }), + `WeakMap { \u001b[${special[0]}m<items unknown>\u001b[${special[1]}m }`, + ); + assert.strictEqual( + inspect(new Promise(() => {}), { colors: true }), + `Promise { \u001b[${special[0]}m<pending>\u001b[${special[1]}m }`, + ); + + const rejection = Promise.reject("Oh no!"); + assert.strictEqual( + inspect(rejection, { colors: true }), + `Promise { \u001b[${special[0]}m<rejected>\u001b[${special[1]}m ` + + `\u001b[${string[0]}m'Oh no!'\u001b[${string[1]}m }`, + ); + rejection.catch(() => {}); + + // Verify that aliases do not show up as key while checking `inspect.colors`. + const colors = Object.keys(inspect.colors); + const aliases = Object.getOwnPropertyNames(inspect.colors).filter(c => !colors.includes(c)); + assert(!colors.includes("grey"), colors); + assert(colors.includes("gray"), colors); + // Verify that all aliases are correctly mapped. + for (const alias of aliases) { + assert(Array.isArray(inspect.colors[alias])); + } + // Check consistent naming. + ["black", "red", "green", "yellow", "blue", "magenta", "cyan", "white"].forEach((color, i) => { + assert.deepStrictEqual(inspect.colors[color], [30 + i, 39]); + assert.deepStrictEqual(inspect.colors[`${color}Bright`], [90 + i, 39]); + const bgColor = `bg${color[0].toUpperCase()}${color.slice(1)}`; + assert.deepStrictEqual(inspect.colors[bgColor], [40 + i, 49]); + assert.deepStrictEqual(inspect.colors[`${bgColor}Bright`], [100 + i, 49]); + }); + + // Unknown colors are handled gracefully: + const stringStyle = inspect.styles.string; + inspect.styles.string = "UNKNOWN"; + assert.strictEqual(inspect("foobar", { colors: true }), "'foobar'"); + inspect.styles.string = stringStyle; + } + + assert.strictEqual(inspect([1, 3, 2], { sorted: true }), inspect([1, 3, 2])); + assert.strictEqual(inspect({ c: 3, a: 1, b: 2 }, { sorted: true }), "{ a: 1, b: 2, c: 3 }"); + assert.strictEqual( + inspect( + { a200: 4, a100: 1, a102: 3, a101: 2 }, + { + sorted(a, b) { + return b.localeCompare(a); + }, + }, + ), + "{ a200: 4, a102: 3, a101: 2, a100: 1 }", + ); + + // Non-indices array properties are sorted as well. + { + const arr = [3, 2, 1]; + arr.b = 2; + arr.c = 3; + arr.a = 1; + arr[Symbol("b")] = true; + arr[Symbol("a")] = false; + assert.strictEqual( + inspect(arr, { sorted: true }), + "[ 3, 2, 1, [Symbol(a)]: false, [Symbol(b)]: true, a: 1, b: 2, c: 3 ]", + ); + } + + // Manipulate the prototype in weird ways. + { + let obj = { a: true }; + let value = (function () { + return function () {}; + })(); + Object.setPrototypeOf(value, null); + Object.setPrototypeOf(obj, value); + assert.strictEqual(util.inspect(obj), "Object <[Function (null prototype) (anonymous)]> { a: true }"); + assert.strictEqual( + util.inspect(obj, { colors: true }), + "Object <\u001b[36m[Function (null prototype) (anonymous)]\u001b[39m> " + "{ a: \u001b[33mtrue\u001b[39m }", + ); + + obj = { a: true }; + value = []; + Object.setPrototypeOf(value, null); + Object.setPrototypeOf(obj, value); + assert.strictEqual(util.inspect(obj), "Object <[Array(0): null prototype] []> { a: true }"); + + function StorageObject() {} + StorageObject.prototype = { __proto__: null }; + assert.strictEqual( + util.inspect(new StorageObject()), + // TODO: null prototypes + // 'StorageObject <[Object: null prototype] {}> {}' + "Object <[Object: null prototype] {}> {}", + ); + + obj = [1, 2, 3]; + Object.setPrototypeOf(obj, Number.prototype); + assert.strictEqual(inspect(obj), "Number { '0': 1, '1': 2, '2': 3 }"); + + Object.setPrototypeOf(obj, { __proto__: null }); + assert.strictEqual(inspect(obj), "Array <[Object: null prototype] {}> { '0': 1, '1': 2, '2': 3 }"); + + StorageObject.prototype = { __proto__: null }; + Object.setPrototypeOf(StorageObject.prototype, { __proto__: null }); + Object.setPrototypeOf(Object.getPrototypeOf(StorageObject.prototype), { __proto__: null }); + assert.strictEqual( + util.inspect(new StorageObject()), + // TODO: null prototypes + // 'StorageObject <Object <Object <[Object: null prototype] {}>>> {}' + "Object <Object <Object <[Object: null prototype] {}>>> {}", + ); + assert.strictEqual( + util.inspect(new StorageObject(), { depth: 1 }), + // TODO: null prototypes + // 'StorageObject <Object <Object <Complex prototype>>> {}' + "Object <Object <Object <Complex prototype>>> {}", + ); + } + + // Check that the fallback always works. + { + const obj = new Set([1, 2]); + const iterator = obj[Symbol.iterator]; + Object.setPrototypeOf(obj, null); + Object.defineProperty(obj, Symbol.iterator, { + value: iterator, + configurable: true, + }); + assert.strictEqual(util.inspect(obj), "[Set(2): null prototype] { 1, 2 }"); + Object.defineProperty(obj, Symbol.iterator, { + value: true, + configurable: true, + }); + Object.defineProperty(obj, "size", { + value: NaN, + configurable: true, + enumerable: true, + }); + assert.strictEqual(util.inspect(obj), "[Set(2): null prototype] { 1, 2, size: NaN }"); + } + + // Check the getter option. + { + let foo = 1; + const get = { + get foo() { + return foo; + }, + }; + const getset = { + get foo() { + return foo; + }, + set foo(val) { + foo = val; + }, + get inc() { + return ++foo; + }, + }; + const thrower = { + get foo() { + throw new Error("Oops"); + }, + }; + assert.strictEqual( + inspect(get, { getters: true, colors: true }), + "{ foo: \u001b[36m[Getter:\u001b[39m " + "\u001b[33m1\u001b[39m\u001b[36m]\u001b[39m }", + ); + assert.strictEqual(inspect(thrower, { getters: true }), "{ foo: [Getter: <Inspection threw (Oops)>] }"); + assert.strictEqual(inspect(getset, { getters: true }), "{ foo: [Getter/Setter: 1], inc: [Getter: 2] }"); + assert.strictEqual(inspect(getset, { getters: "get" }), "{ foo: [Getter/Setter], inc: [Getter: 3] }"); + assert.strictEqual(inspect(getset, { getters: "set" }), "{ foo: [Getter/Setter: 3], inc: [Getter] }"); + getset.foo = new Set([[{ a: true }, 2, {}], "foobar", { x: 1 }]); + assert.strictEqual( + inspect(getset, { getters: true }), + "{\n foo: [Getter/Setter] Set(3) { [ [Object], 2, {} ], " + "'foobar', { x: 1 } },\n inc: [Getter: NaN]\n}", + ); + } + + // Check compact number mode. + { + let obj = { + a: { + b: { + x: 5, + c: { + x: "10000000000000000 00000000000000000 ".repeat(1e1), + d: 2, + e: 3, + }, + }, + }, + b: [1, 2, [1, 2, { a: 1, b: 2, c: 3 }]], + c: ["foo", 4, 444444], + d: Array.from({ length: 101 }).map((e, i) => { + return i % 2 === 0 ? i * i : i; + }), + e: Array(6).fill("foobar"), + f: Array(9).fill("foobar"), + g: Array(21).fill("foobar baz"), + h: [100].concat(Array.from({ length: 9 }).map((e, n) => n)), + long: Array(9).fill("This text is too long for grouping!"), + }; + + let out = util.inspect(obj, { compact: 3, depth: 10, breakLength: 60 }); + let expected = [ + "{", + " a: {", + " b: {", + " x: 5,", + " c: {", + " x: '10000000000000000 00000000000000000 10000000000000000 " + + "00000000000000000 10000000000000000 00000000000000000 " + + "10000000000000000 00000000000000000 10000000000000000 " + + "00000000000000000 10000000000000000 00000000000000000 " + + "10000000000000000 00000000000000000 10000000000000000 " + + "00000000000000000 10000000000000000 00000000000000000 " + + "10000000000000000 00000000000000000 ',", + " d: 2,", + " e: 3", + " }", + " }", + " },", + " b: [ 1, 2, [ 1, 2, { a: 1, b: 2, c: 3 } ] ],", + " c: [ 'foo', 4, 444444 ],", + " d: [", + " 0, 1, 4, 3, 16, 5, 36, 7, 64,", + " 9, 100, 11, 144, 13, 196, 15, 256, 17,", + " 324, 19, 400, 21, 484, 23, 576, 25, 676,", + " 27, 784, 29, 900, 31, 1024, 33, 1156, 35,", + " 1296, 37, 1444, 39, 1600, 41, 1764, 43, 1936,", + " 45, 2116, 47, 2304, 49, 2500, 51, 2704, 53,", + " 2916, 55, 3136, 57, 3364, 59, 3600, 61, 3844,", + " 63, 4096, 65, 4356, 67, 4624, 69, 4900, 71,", + " 5184, 73, 5476, 75, 5776, 77, 6084, 79, 6400,", + " 81, 6724, 83, 7056, 85, 7396, 87, 7744, 89,", + " 8100, 91, 8464, 93, 8836, 95, 9216, 97, 9604,", + " 99,", + " ... 1 more item", + " ],", + " e: [", + " 'foobar',", + " 'foobar',", + " 'foobar',", + " 'foobar',", + " 'foobar',", + " 'foobar'", + " ],", + " f: [", + " 'foobar', 'foobar',", + " 'foobar', 'foobar',", + " 'foobar', 'foobar',", + " 'foobar', 'foobar',", + " 'foobar'", + " ],", + " g: [", + " 'foobar baz', 'foobar baz',", + " 'foobar baz', 'foobar baz',", + " 'foobar baz', 'foobar baz',", + " 'foobar baz', 'foobar baz',", + " 'foobar baz', 'foobar baz',", + " 'foobar baz', 'foobar baz',", + " 'foobar baz', 'foobar baz',", + " 'foobar baz', 'foobar baz',", + " 'foobar baz', 'foobar baz',", + " 'foobar baz', 'foobar baz',", + " 'foobar baz'", + " ],", + " h: [", + " 100, 0, 1, 2, 3,", + " 4, 5, 6, 7, 8", + " ],", + " long: [", + " 'This text is too long for grouping!',", + " 'This text is too long for grouping!',", + " 'This text is too long for grouping!',", + " 'This text is too long for grouping!',", + " 'This text is too long for grouping!',", + " 'This text is too long for grouping!',", + " 'This text is too long for grouping!',", + " 'This text is too long for grouping!',", + " 'This text is too long for grouping!'", + " ]", + "}", + ].join("\n"); + + assert.strictEqual(out, expected); + + obj = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 123456789]; + + out = util.inspect(obj, { compact: 3 }); + + expected = [ + "[", + " 1, 1, 1, 1,", + " 1, 1, 1, 1,", + " 1, 1, 1, 1,", + " 1, 1, 1, 1,", + " 1, 1, 1, 1,", + " 1, 1, 1, 1,", + " 1, 1, 123456789", + "]", + ].join("\n"); + + assert.strictEqual(out, expected); + + // Unicode support. あ has a length of one and a width of two. + obj = ["123", "123", "123", "123", "あああ", "123", "123", "123", "123", "あああ"]; + + out = util.inspect(obj, { compact: 3 }); + + expected = [ + "[", + " '123', '123',", + " '123', '123',", + " 'あああ', '123',", + " '123', '123',", + " '123', 'あああ'", + "]", + ].join("\n"); + + assert.strictEqual(out, expected); + + // Array grouping should prevent lining up outer elements on a single line. + obj = [[[1, 2, 3, 4, 5, 6, 7, 8, 9]]]; + + out = util.inspect(obj, { compact: 3 }); + + expected = ["[", " [", " [", " 1, 2, 3, 4, 5,", " 6, 7, 8, 9", " ]", " ]", "]"].join("\n"); + + assert.strictEqual(out, expected); + + // Verify that array grouping and line consolidation does not happen together. + obj = { + a: { + b: { + x: 5, + c: { + d: 2, + e: 3, + }, + }, + }, + b: Array.from({ length: 9 }).map((e, n) => { + return n % 2 === 0 ? "foobar" : "baz"; + }), + }; + + out = util.inspect(obj, { compact: 1, breakLength: Infinity, colors: true }); + + expected = [ + "{", + " a: {", + " b: { x: \u001b[33m5\u001b[39m, c: \u001b[36m[Object]\u001b[39m }", + " },", + " b: [", + " \u001b[32m'foobar'\u001b[39m, \u001b[32m'baz'\u001b[39m,", + " \u001b[32m'foobar'\u001b[39m, \u001b[32m'baz'\u001b[39m,", + " \u001b[32m'foobar'\u001b[39m, \u001b[32m'baz'\u001b[39m,", + " \u001b[32m'foobar'\u001b[39m, \u001b[32m'baz'\u001b[39m,", + " \u001b[32m'foobar'\u001b[39m", + " ]", + "}", + ].join("\n"); + + assert.strictEqual(out, expected); + + obj = Array.from({ length: 60 }).map((e, i) => i); + out = util.inspect(obj, { compact: 1, breakLength: Infinity, colors: true }); + + expected = [ + "[", + " \u001b[33m0\u001b[39m, \u001b[33m1\u001b[39m, \u001b[33m2\u001b[39m, \u001b[33m3\u001b[39m,", + " \u001b[33m4\u001b[39m, \u001b[33m5\u001b[39m, \u001b[33m6\u001b[39m, \u001b[33m7\u001b[39m,", + " \u001b[33m8\u001b[39m, \u001b[33m9\u001b[39m, \u001b[33m10\u001b[39m, \u001b[33m11\u001b[39m,", + " \u001b[33m12\u001b[39m, \u001b[33m13\u001b[39m, \u001b[33m14\u001b[39m, \u001b[33m15\u001b[39m,", + " \u001b[33m16\u001b[39m, \u001b[33m17\u001b[39m, \u001b[33m18\u001b[39m, \u001b[33m19\u001b[39m,", + " \u001b[33m20\u001b[39m, \u001b[33m21\u001b[39m, \u001b[33m22\u001b[39m, \u001b[33m23\u001b[39m,", + " \u001b[33m24\u001b[39m, \u001b[33m25\u001b[39m, \u001b[33m26\u001b[39m, \u001b[33m27\u001b[39m,", + " \u001b[33m28\u001b[39m, \u001b[33m29\u001b[39m, \u001b[33m30\u001b[39m, \u001b[33m31\u001b[39m,", + " \u001b[33m32\u001b[39m, \u001b[33m33\u001b[39m, \u001b[33m34\u001b[39m, \u001b[33m35\u001b[39m,", + " \u001b[33m36\u001b[39m, \u001b[33m37\u001b[39m, \u001b[33m38\u001b[39m, \u001b[33m39\u001b[39m,", + " \u001b[33m40\u001b[39m, \u001b[33m41\u001b[39m, \u001b[33m42\u001b[39m, \u001b[33m43\u001b[39m,", + " \u001b[33m44\u001b[39m, \u001b[33m45\u001b[39m, \u001b[33m46\u001b[39m, \u001b[33m47\u001b[39m,", + " \u001b[33m48\u001b[39m, \u001b[33m49\u001b[39m, \u001b[33m50\u001b[39m, \u001b[33m51\u001b[39m,", + " \u001b[33m52\u001b[39m, \u001b[33m53\u001b[39m, \u001b[33m54\u001b[39m, \u001b[33m55\u001b[39m,", + " \u001b[33m56\u001b[39m, \u001b[33m57\u001b[39m, \u001b[33m58\u001b[39m, \u001b[33m59\u001b[39m", + "]", + ].join("\n"); + + assert.strictEqual(out, expected); + + out = util.inspect([1, 2, 3, 4], { compact: 1, colors: true }); + expected = "[ \u001b[33m1\u001b[39m, \u001b[33m2\u001b[39m, " + "\u001b[33m3\u001b[39m, \u001b[33m4\u001b[39m ]"; + + assert.strictEqual(out, expected); + + obj = [ + "Object", + "Function", + "Array", + "Number", + "parseFloat", + "parseInt", + "Infinity", + "NaN", + "undefined", + "Boolean", + "String", + "Symbol", + "Date", + "Promise", + "RegExp", + "Error", + "EvalError", + "RangeError", + "ReferenceError", + "SyntaxError", + "TypeError", + "URIError", + "JSON", + "Math", + "console", + "Intl", + "ArrayBuffer", + "Uint8Array", + "Int8Array", + "Uint16Array", + "Int16Array", + "Uint32Array", + "Int32Array", + "Float32Array", + "Float64Array", + "Uint8ClampedArray", + "BigUint64Array", + "BigInt64Array", + "DataView", + "Map", + "BigInt", + "Set", + "WeakMap", + "WeakSet", + "Proxy", + "Reflect", + "decodeURI", + "decodeURIComponent", + "encodeURI", + "encodeURIComponent", + "escape", + "unescape", + "eval", + "isFinite", + "isNaN", + "SharedArrayBuffer", + "Atomics", + "globalThis", + "WebAssembly", + "global", + "process", + "Buffer", + "URL", + "URLSearchParams", + "TextEncoder", + "TextDecoder", + "clearInterval", + "clearTimeout", + "setInterval", + "setTimeout", + "queueMicrotask", + "clearImmediate", + "setImmediate", + "module", + "require", + "assert", + "async_hooks", + "buffer", + "child_process", + "cluster", + "crypto", + "dgram", + "dns", + "domain", + "events", + "fs", + "http", + "http2", + "https", + "inspector", + "net", + "os", + "path", + "perf_hooks", + "punycode", + "querystring", + "readline", + "repl", + "stream", + "string_decoder", + "tls", + "trace_events", + "tty", + "url", + "v8", + "vm", + "worker_threads", + "zlib", + "_", + "_error", + "util", + ]; + + out = util.inspect(obj, { compact: 3, breakLength: 80, maxArrayLength: 250 }); + expected = [ + "[", + " 'Object', 'Function', 'Array',", + " 'Number', 'parseFloat', 'parseInt',", + " 'Infinity', 'NaN', 'undefined',", + " 'Boolean', 'String', 'Symbol',", + " 'Date', 'Promise', 'RegExp',", + " 'Error', 'EvalError', 'RangeError',", + " 'ReferenceError', 'SyntaxError', 'TypeError',", + " 'URIError', 'JSON', 'Math',", + " 'console', 'Intl', 'ArrayBuffer',", + " 'Uint8Array', 'Int8Array', 'Uint16Array',", + " 'Int16Array', 'Uint32Array', 'Int32Array',", + " 'Float32Array', 'Float64Array', 'Uint8ClampedArray',", + " 'BigUint64Array', 'BigInt64Array', 'DataView',", + " 'Map', 'BigInt', 'Set',", + " 'WeakMap', 'WeakSet', 'Proxy',", + " 'Reflect', 'decodeURI', 'decodeURIComponent',", + " 'encodeURI', 'encodeURIComponent', 'escape',", + " 'unescape', 'eval', 'isFinite',", + " 'isNaN', 'SharedArrayBuffer', 'Atomics',", + " 'globalThis', 'WebAssembly', 'global',", + " 'process', 'Buffer', 'URL',", + " 'URLSearchParams', 'TextEncoder', 'TextDecoder',", + " 'clearInterval', 'clearTimeout', 'setInterval',", + " 'setTimeout', 'queueMicrotask', 'clearImmediate',", + " 'setImmediate', 'module', 'require',", + " 'assert', 'async_hooks', 'buffer',", + " 'child_process', 'cluster', 'crypto',", + " 'dgram', 'dns', 'domain',", + " 'events', 'fs', 'http',", + " 'http2', 'https', 'inspector',", + " 'net', 'os', 'path',", + " 'perf_hooks', 'punycode', 'querystring',", + " 'readline', 'repl', 'stream',", + " 'string_decoder', 'tls', 'trace_events',", + " 'tty', 'url', 'v8',", + " 'vm', 'worker_threads', 'zlib',", + " '_', '_error', 'util'", + "]", + ].join("\n"); + + assert.strictEqual(out, expected); + } + + { + // TODO: don't care if invalid node internals get highlighted wrong + // See: loaders.js if you want to fix + + const originalCWD = process.cwd(); + + process.cwd = () => + process.platform === "win32" + ? "C:\\workspace\\node-test-binary-windows js-suites-%percent-encoded\\node" + : "/home/user directory/repository%encoded/node"; + + // Use a fake stack to verify the expected colored outcome. + const stack = [ + "Error: CWD is grayed out, even cwd that are percent encoded!", + " at A.<anonymous> (/test/node_modules/foo/node_modules/bar/baz.js:2:7)", + " at Module._compile (node:internal/modules/cjs/loader:827:30)", + " at Fancy (node:vm:697:32)", + // This file is not an actual Node.js core file. + // ' at tryModuleLoad (node:internal/modules/cjs/foo:629:12)', + " at Function.Module._load (node:internal/modules/cjs/loader:621:3)", + // This file is not an actual Node.js core file. + // ' at Module.require [as weird/name] (node:internal/aaaaa/loader:735:19)', + " at require (node:internal/modules/helpers:14:16)", + " at Array.forEach (<anonymous>)", + ` at ${process.cwd()}/test/parallel/test-util-inspect.js:2760:12`, + ` at Object.<anonymous> (${process.cwd()}/node_modules/hyper_module/folder/file.js:2753:10)`, + " at /test/test-util-inspect.js:2239:9", + " at getActual (node:assert:592:5)", + ]; + const err = new Error("CWD is grayed out, even cwd that are percent encoded!"); + err.stack = stack.join("\n"); + if (process.platform === "win32") { + err.stack = stack.map(frame => (frame.includes("node:") ? frame : frame.replace(/\//g, "\\"))).join("\n"); + } + const escapedCWD = util.inspect(process.cwd()).slice(1, -1); + util + .inspect(err, { colors: true }) + .split("\n") + .forEach((line, i) => { + line = line.replace(/ \{$/, ""); + if (i >= stack.length) return; //! workaround to ignore the extra error props at the end + let expected = stack[i] + .replace(/node_modules\/([^/]+)/gi, (_, m) => { + return `node_modules/\u001b[4m${m}\u001b[24m`; + }) + .replace(new RegExp(`(\\(?${escapedCWD}(\\\\|/))`, "gi"), (_, m) => { + return `\x1B[90m${m}\x1B[39m`; + }); + if (expected.includes(process.cwd()) && expected.endsWith(")")) { + expected = `${expected.slice(0, -1)}\x1B[90m)\x1B[39m`; + } + if (line.includes("node:")) { + if (!line.includes("foo") && !line.includes("aaa")) { + expected = `\u001b[90m${expected}\u001b[39m`; + } + } else if (process.platform === "win32") { + expected = expected.replace(/\//g, "\\"); + } + assert.strictEqual(line, expected); + }); + + // Check ESM + //const encodedCwd = url.pathToFileURL(process.cwd()); + const sl = process.platform === "win32" ? "\\" : "/"; + + // Use a fake stack to verify the expected colored outcome. + //? Something goes wrong with these file URLs but Bun doesn't use those in errors anyway so it's fine (for now at least) + err.stack = + "Error: ESM and CJS mixed are both grayed out!\n" + + //?` at ${encodedCwd}/test/parallel/test-esm.mjs:2760:12\n` + + //?` at Object.<anonymous> (${encodedCwd}/node_modules/esm_module/folder/file.js:2753:10)\n` + + ` at ${process.cwd()}${sl}test${sl}parallel${sl}test-cjs.js:2760:12\n` + + ` at Object.<anonymous> (${process.cwd()}${sl}node_modules${sl}cjs_module${sl}folder${sl}file.js:2753:10)`; + + let actual = util.inspect(err, { colors: true }); + let expected = + "Error: ESM and CJS mixed are both grayed out!\n" + + //?` at \x1B[90m${encodedCwd}/\x1B[39mtest/parallel/test-esm.mjs:2760:12\n` + + //?` at Object.<anonymous> \x1B[90m(${encodedCwd}/\x1B[39mnode_modules/\x1B[4mesm_module\x1B[24m/folder/file.js:2753:10\x1B[90m)\x1B[39m\n` + + ` at \x1B[90m${process.cwd()}${sl}\x1B[39mtest${sl}parallel${sl}test-cjs.js:2760:12\n` + + ` at Object.<anonymous> \x1B[90m(${process.cwd()}${sl}\x1B[39mnode_modules${sl}\x1B[4mcjs_module\x1B[24m${sl}folder${sl}file.js:2753:10\x1B[90m)\x1B[39m`; + + assert.strictEqual(actual.split(" {\n")[0], expected); + + // ESM without need for encoding + process.cwd = () => + process.platform === "win32" + ? "C:\\workspace\\node-test-binary-windows-js-suites\\node" + : "/home/user/repository/node"; + let expectedCwd = process.cwd(); + if (process.platform === "win32") { + expectedCwd = `/${expectedCwd.replace(/\\/g, "/")}`; + } + // Use a fake stack to verify the expected colored outcome. + err.stack = "Error: ESM without need for encoding!\n" + ` at file://${expectedCwd}/file.js:15:15`; + + actual = util.inspect(err, { colors: true }); + expected = "Error: ESM without need for encoding!\n" + ` at \x1B[90mfile://${expectedCwd}/\x1B[39mfile.js:15:15`; + assert.strictEqual(actual.split(" {\n")[0], expected); + + process.cwd = originalCWD; + } + + // This starts to work in node 15 + { + // Cross platform checks. + const err = new Error("foo"); + util + .inspect(err, { colors: true }) + .split("\n") + .forEach((line, i) => { + assert(i < 5 || line.startsWith("\u001b[90m"), i + " " + line); + }); + } + + { + // Tracing class respects inspect depth. + try { + const trace = require("trace_events").createTracing({ categories: ["fo"] }); + const actualDepth0 = util.inspect({ trace }, { depth: 0 }); + assert.strictEqual(actualDepth0, "{ trace: [Tracing] }"); + //! bun's tracing_events implementation is buggy/incomplete (?) + //const actualDepth1 = util.inspect({ trace }, { depth: 1 }); + //assert.strictEqual( + // actualDepth1, + // "{ trace: Tracing { enabled: false, categories: 'fo' } }" + //); + } catch (err) { + if (err.code !== "ERR_TRACE_EVENTS_UNAVAILABLE") throw err; + } + } + + // Inspect prototype properties. + { + function _defineProperty(obj, key, value) { + if (key in obj) { + Object.defineProperty(obj, key, { + value: value, + enumerable: true, + configurable: true, + writable: true, + }); + } else { + obj[key] = value; + } + return obj; + } + + class Foo extends Map { + constructor(...args) { + super(...args); + _defineProperty(this, "prop", false); + _defineProperty(this, "prop2", true); + } + get abc() { + return true; + } + get def() { + return false; + } + set def(v) {} + get xyz() { + return "Should be ignored"; + } + func(a) {} + [util.inspect.custom]() { + return this; + } + } + + class Bar extends Foo { + constructor(...args) { + super(...args); + _defineProperty(this, "prop", true); + _defineProperty(this, "abc", true); + } + + get xyz() { + return "YES!"; + } + [util.inspect.custom]() { + return this; + } + } + + const bar = new Bar(); + + assert.strictEqual(inspect(bar), "Bar(0) [Map] { prop: true, prop2: true, abc: true }"); + assert.strictEqual( + inspect(bar, { showHidden: true, getters: true, colors: false }), + "Bar(0) [Map] {\n" + + " prop: true,\n" + + " prop2: true,\n" + + " abc: true,\n" + + " [xyz]: [Getter: 'YES!'],\n" + + " [def]: [Getter/Setter: false]\n" + + "}", + ); + assert.strictEqual( + inspect(bar, { showHidden: true, getters: false, colors: true }), + "Bar(0) [Map] {\n" + + " prop: \x1B[33mtrue\x1B[39m,\n" + + " prop2: \x1B[33mtrue\x1B[39m,\n" + + " abc: \x1B[33mtrue\x1B[39m,\n" + + " \x1B[2m[xyz]: \x1B[36m[Getter]\x1B[39m\x1B[22m,\n" + + " \x1B[2m[def]: \x1B[36m[Getter/Setter]\x1B[39m\x1B[22m\n" + + "}", + ); + + const obj = { __proto__: { abc: true, def: 5, toString() {} } }; + assert.strictEqual( + inspect(obj, { showHidden: true, colors: true }), + "{ \x1B[2mabc: \x1B[33mtrue\x1B[39m\x1B[22m, " + "\x1B[2mdef: \x1B[33m5\x1B[39m\x1B[22m }", + ); + + assert.strictEqual( + inspect(Object.getPrototypeOf(bar), { showHidden: true, getters: true }), + "<ref *1> Foo [Map] {\n" + + " [constructor]: [class Bar extends Foo] {\n" + + ` [prototype]: [Circular *1],\n [name]: 'Bar',\n` + + " [length]: 0,\n" + + " [Symbol(Symbol.species)]: [Getter: <Inspection threw " + + "(Symbol.prototype.toString requires that |this| be a symbol or a symbol object)>]\n" + + " },\n" + + " [xyz]: [Getter: 'YES!'],\n" + + " [Symbol(nodejs.util.inspect.custom)]: " + + "[Function: [nodejs.util.inspect.custom]] {\n" + + " [length]: 0,\n" + + " [name]: '[nodejs.util.inspect.custom]'\n" + + " },\n" + + " [abc]: [Getter: true],\n" + + " [def]: [Getter/Setter: false]\n" + + " }", + ); + + assert.strictEqual(inspect(Object.getPrototypeOf(bar)), "Foo [Map] {}"); + + assert.strictEqual(inspect(Object.getPrototypeOf(new Foo())), "Map {}"); + } + + // Check that prototypes with a null prototype are inspectable. + // Regression test for https://github.com/nodejs/node/issues/35730 + { + function Func() {} + Func.prototype = null; + const object = {}; + object.constructor = Func; + + assert.strictEqual(util.inspect(object), "{ constructor: [Function: Func] }"); + } + + // Test changing util.inspect.colors colors and aliases. + { + const colors = util.inspect.colors; + + const originalValue = colors.gray; + + // "grey" is reference-equal alias of "gray". + assert.strictEqual(colors.grey, colors.gray); + + // Assigninging one should assign the other. This tests that the alias setter + // function keeps things reference-equal. + colors.gray = [0, 0]; + assert.deepStrictEqual(colors.gray, [0, 0]); + assert.strictEqual(colors.grey, colors.gray); + + colors.grey = [1, 1]; + assert.deepStrictEqual(colors.grey, [1, 1]); + assert.strictEqual(colors.grey, colors.gray); + + // Restore original value to avoid side effects in other tests. + colors.gray = originalValue; + assert.deepStrictEqual(colors.gray, originalValue); + assert.strictEqual(colors.grey, colors.gray); + } + + // https://github.com/nodejs/node/issues/31889 + //{ //! how to get the undetectable object in JSC? + // const undetectable = vm.runInThisContext('%GetUndetectable()'); + // assert.strictEqual(inspect(undetectable), '{}'); + //} + + // Truncate output for Primitives with 1 character left + { + assert.strictEqual(util.inspect("bl", { maxStringLength: 1 }), "'b'... 1 more character"); + } + + { + const x = "a".repeat(1e6); + assert(util.inspect(x).endsWith("... 990000 more characters")); + assert.strictEqual(util.inspect(x, { maxStringLength: 4 }), "'aaaa'... 999996 more characters"); + assert.match(util.inspect(x, { maxStringLength: null }), /a'$/); + } + + { + // Verify that util.inspect() invokes custom inspect functions on objects + // from other vm.Contexts but does not pass data from its own Context to that + // function. + const target = vm.runInNewContext( + /*js*/ ` + ({ + [Symbol.for('nodejs.util.inspect.custom')](depth, ctx) { + this.depth = depth; + this.ctx = ctx; + try { + this.stylized = ctx.stylize('🐈'); + } catch (e) { + this.stylizeException = e; + } + return this.stylized; + } + }) + `, + { __proto__: null }, + ); + assert.strictEqual(target.ctx, undefined); + + { + // Subtest 1: Just try to inspect the object with default options. + assert.strictEqual(util.inspect(target), "🐈"); + assert.strictEqual(typeof target.ctx, "object"); + const objectGraph = fullObjectGraph(target); + assert(!objectGraph.has(Object)); + assert(!objectGraph.has(Function)); + } + + if (false) { + //! SKIP TEST: non-standard api + // Subtest 2: Use a stylize function that returns a non-primitive. + const output = util.inspect(target, { + stylize: mustCall(str => { + return {}; + }), + }); + assert.strictEqual(output, "[object Object]"); + assert.strictEqual(typeof target.ctx, "object"); + const objectGraph = fullObjectGraph(target); + assert(!objectGraph.has(Object)); + assert(!objectGraph.has(Function)); + } + + if (false) { + //! SKIP TEST: non-standard api + // Subtest 3: Use a stylize function that throws an exception. + const output = util.inspect(target, { + stylize: mustCall(str => { + throw new Error("oops"); + }), + }); + assert.strictEqual(output, "🐈"); + assert.strictEqual(typeof target.ctx, "object"); + const objectGraph = fullObjectGraph(target); + assert(!objectGraph.has(Object)); + assert(!objectGraph.has(Function)); + } + + function fullObjectGraph(value) { + const graph = new Set([value]); + + for (const entry of graph) { + if ((typeof entry !== "object" && typeof entry !== "function") || entry === null) { + continue; + } + + graph.add(Object.getPrototypeOf(entry)); + const descriptors = Object.values(Object.getOwnPropertyDescriptors(entry)); + for (const descriptor of descriptors) { + graph.add(descriptor.value); + graph.add(descriptor.set); + graph.add(descriptor.get); + } + } + + return graph; + } + + // Consistency check. + assert(fullObjectGraph(global).has(Function.prototype)); + } + + { + // Confirm that own constructor value displays correctly. + + function Fhqwhgads() {} + + const sterrance = new Fhqwhgads(); + sterrance.constructor = Fhqwhgads; + + assert.strictEqual( + util.inspect(sterrance, { showHidden: true }), + "Fhqwhgads {\n" + + " constructor: <ref *1> [Function: Fhqwhgads] {\n" + + " [length]: 0,\n" + + " [prototype]: { [constructor]: [Circular *1] },\n" + + " [name]: 'Fhqwhgads'\n" + + " }\n" + + "}", + ); + } + + { + // Confirm null prototype of generator prototype displays as expected. + + function getProtoOfProto() { + return Object.getPrototypeOf(Object.getPrototypeOf(function* () {})); + } + + function* generator() {} + + const generatorPrototype = Object.getPrototypeOf(generator); + const originalProtoOfProto = Object.getPrototypeOf(generatorPrototype); + assert.strictEqual(getProtoOfProto(), originalProtoOfProto); + Object.setPrototypeOf(generatorPrototype, null); + assert.notStrictEqual(getProtoOfProto, originalProtoOfProto); + + // This is the actual test. The other assertions in this block are about + // making sure the test is set up correctly and isn't polluting other tests. + assert.strictEqual( + util.inspect(generator, { showHidden: true }), + "[GeneratorFunction: generator] {\n" + + " [length]: 0,\n" + + " [name]: 'generator',\n" + + " [prototype]: Object [Generator] { [Symbol(Symbol.toStringTag)]: 'Generator' },\n" + + " [Symbol(Symbol.toStringTag)]: 'GeneratorFunction'\n" + + "}", + ); + + // Reset so we don't pollute other tests + Object.setPrototypeOf(generatorPrototype, originalProtoOfProto); + assert.strictEqual(getProtoOfProto(), originalProtoOfProto); + } + + { + // Test for when breakLength results in a single column. + const obj = Array(9).fill("fhqwhgadshgnsdhjsdbkhsdabkfabkveybvf"); + assert.strictEqual( + util.inspect(obj, { breakLength: 256 }), + "[\n" + + " 'fhqwhgadshgnsdhjsdbkhsdabkfabkveybvf',\n" + + " 'fhqwhgadshgnsdhjsdbkhsdabkfabkveybvf',\n" + + " 'fhqwhgadshgnsdhjsdbkhsdabkfabkveybvf',\n" + + " 'fhqwhgadshgnsdhjsdbkhsdabkfabkveybvf',\n" + + " 'fhqwhgadshgnsdhjsdbkhsdabkfabkveybvf',\n" + + " 'fhqwhgadshgnsdhjsdbkhsdabkfabkveybvf',\n" + + " 'fhqwhgadshgnsdhjsdbkhsdabkfabkveybvf',\n" + + " 'fhqwhgadshgnsdhjsdbkhsdabkfabkveybvf',\n" + + " 'fhqwhgadshgnsdhjsdbkhsdabkfabkveybvf'\n" + + "]", + ); + } + + { + assert.strictEqual(util.inspect({ ["__proto__"]: { a: 1 } }), "{ ['__proto__']: { a: 1 } }"); + } + + { + const { numericSeparator } = util.inspect.defaultOptions; + util.inspect.defaultOptions.numericSeparator = true; + + assert.strictEqual(util.inspect(1234567891234567891234), "1.234567891234568e+21"); + assert.strictEqual(util.inspect(123456789.12345678), "123_456_789.123_456_78"); + + assert.strictEqual(util.inspect(10_000_000), "10_000_000"); + assert.strictEqual(util.inspect(1_000_000), "1_000_000"); + assert.strictEqual(util.inspect(100_000), "100_000"); + assert.strictEqual(util.inspect(99_999.9), "99_999.9"); + assert.strictEqual(util.inspect(9_999), "9_999"); + assert.strictEqual(util.inspect(999), "999"); + assert.strictEqual(util.inspect(NaN), "NaN"); + assert.strictEqual(util.inspect(Infinity), "Infinity"); + assert.strictEqual(util.inspect(-Infinity), "-Infinity"); + + assert.strictEqual(util.inspect(new Float64Array([100_000_000])), "Float64Array(1) [ 100_000_000 ]"); + assert.strictEqual(util.inspect(new BigInt64Array([9_100_000_100n])), "BigInt64Array(1) [ 9_100_000_100n ]"); + + assert.strictEqual(util.inspect(123456789), "123_456_789"); + assert.strictEqual(util.inspect(123456789n), "123_456_789n"); + + util.inspect.defaultOptions.numericSeparator = numericSeparator; + + assert.strictEqual(util.inspect(123456789.12345678, { numericSeparator: true }), "123_456_789.123_456_78"); + + assert.strictEqual(util.inspect(-123456789.12345678, { numericSeparator: true }), "-123_456_789.123_456_78"); + } + + // Regression test for https://github.com/nodejs/node/issues/41244 + { + assert.strictEqual( + util.inspect({ + get [Symbol.iterator]() { + throw new Error(); + }, + }), + "{ [Symbol(Symbol.iterator)]: [Getter] }", + ); + } +}); + +// Utility functions +function runCallChecks(exitCode) { + if (exitCode !== 0) return; + + const failed = mustCallChecks.filter(function (context) { + if ("minimum" in context) { + context.messageSegment = `at least ${context.minimum}`; + return context.actual < context.minimum; + } + context.messageSegment = `exactly ${context.exact}`; + return context.actual !== context.exact; + }); + + failed.forEach(function (context) { + console.log( + "Mismatched %s function calls. Expected %s, actual %d.", + context.name, + context.messageSegment, + context.actual, + ); + console.log(context.stack.split("\n").slice(2).join("\n")); + }); + + if (failed.length) process.exit(1); +} + +function mustCall(fn, criteria = 1) { + if (process._exiting) throw new Error("Cannot use mustCall() in process exit handler"); + if (typeof fn === "number") { + criteria = fn; + fn = noop; + } else if (fn === undefined) fn = noop; + + const field = "exact"; + if (typeof criteria !== "number") throw new TypeError(`Invalid ${field} value: ${criteria}`); + + const context = { + [field]: criteria, + actual: 0, + stack: util.inspect(new Error()), + name: fn.name || "<anonymous>", + }; + + // Add the exit listener only once to avoid listener leak warnings + if (mustCallChecks.length === 0) process.on("exit", runCallChecks); + mustCallChecks.push(context); + + const _return = function () { + context.actual++; + return fn.apply(this, arguments); + }; + // Function instances have own properties that may be relevant. + // Let's replicate those properties to the returned function. + // Refs: https://tc39.es/ecma262/#sec-function-instances + Object.defineProperties(_return, { + name: { + value: fn.name, + writable: false, + enumerable: false, + configurable: true, + }, + length: { + value: fn.length, + writable: false, + enumerable: false, + configurable: true, + }, + }); + return _return; +} |