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import { expect, test } from "bun:test";
import { bunEnv, bunExe } from "harness";
import { _nodeModulePaths, builtinModules, isBuiltin, wrap } from "module";
import Module from "module";
import path from "path";
test("builtinModules exists", () => {
expect(Array.isArray(builtinModules)).toBe(true);
expect(builtinModules).toHaveLength(76);
});
test("isBuiltin() works", () => {
expect(isBuiltin("fs")).toBe(true);
expect(isBuiltin("path")).toBe(true);
expect(isBuiltin("crypto")).toBe(true);
expect(isBuiltin("assert")).toBe(true);
expect(isBuiltin("util")).toBe(true);
expect(isBuiltin("events")).toBe(true);
expect(isBuiltin("node:events")).toBe(true);
expect(isBuiltin("node:bacon")).toBe(false);
});
test("module.globalPaths exists", () => {
expect(Array.isArray(require("module").globalPaths)).toBe(true);
});
test("Module exists", () => {
expect(Module).toBeDefined();
});
test("module.Module works", () => {
expect(Module.Module === Module).toBeTrue();
const m = new Module("asdf");
expect(m.exports).toEqual({});
});
test("_nodeModulePaths() works", () => {
expect(() => {
_nodeModulePaths();
}).toThrow();
expect(_nodeModulePaths(".").length).toBeGreaterThan(0);
expect(_nodeModulePaths(".").pop()).toBe("/node_modules");
expect(_nodeModulePaths("")).toEqual(_nodeModulePaths("."));
expect(_nodeModulePaths("/")).toEqual(["/node_modules"]);
expect(_nodeModulePaths("/a/b/c/d")).toEqual([
"/a/b/c/d/node_modules",
"/a/b/c/node_modules",
"/a/b/node_modules",
"/a/node_modules",
"/node_modules",
]);
expect(_nodeModulePaths("/a/b/../d")).toEqual(["/a/d/node_modules", "/a/node_modules", "/node_modules"]);
});
test("Module.wrap", () => {
var mod = { exports: {} };
expect(eval(wrap("exports.foo = 1; return 42"))(mod.exports, mod)).toBe(42);
expect(mod.exports.foo).toBe(1);
expect(wrap()).toBe("(function (exports, require, module, __filename, __dirname) { undefined\n});");
});
test("Overwriting _resolveFilename", () => {
const { stdout, exitCode } = Bun.spawnSync({
cmd: [bunExe(), "run", path.join(import.meta.dir, "resolveFilenameOverwrite.cjs")],
env: bunEnv,
stderr: "inherit",
});
expect(stdout.toString().trim().endsWith("--pass--")).toBe(true);
expect(exitCode).toBe(0);
});
test("Module.prototype._compile", () => {
const module = new Module("module id goes here");
const starting_exports = module.exports;
const r = module._compile(
"module.exports = { module, exports, require, __filename, __dirname }",
"/file/path/goes/here.js",
);
expect(r).toBe(undefined);
expect(module.exports).not.toBe(starting_exports);
const { module: m, exports: e, require: req, __filename: fn, __dirname: dn } = module.exports;
expect(m).toBe(module);
expect(e).toBe(starting_exports);
expect(req).toBe(module.require);
expect(fn).toBe("/file/path/goes/here.js");
expect(dn).toBe("/file/path/goes");
});
test("Module._extensions", () => {
expect(".js" in Module._extensions).toBeTrue();
expect(".json" in Module._extensions).toBeTrue();
expect(".node" in Module._extensions).toBeTrue();
expect(require.extensions).toBe(Module._extensions);
});
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