Define tests with a Jest-like API imported from the built-in `bun:test` module. Long term, Bun aims for complete Jest compatibility; at the moment, a [limited set](#matchers) of `expect` matchers are supported. ## Basic usage To define a simple test: ```ts#math.test.ts import { expect, test } from "bun:test"; test("2 + 2", () => { expect(2 + 2).toBe(4); }); ``` Tests can be grouped into suites with `describe`. ```ts#math.test.ts import { expect, test, describe } from "bun:test"; describe("arithmetic", () => { test("2 + 2", () => { expect(2 + 2).toBe(4); }); test("2 * 2", () => { expect(2 * 2).toBe(4); }); }); ``` Tests can be `async`. ```ts import { expect, test } from "bun:test"; test("2 * 2", async () => { const result = await Promise.resolve(2 * 2); expect(result).toEqual(4); }); ``` Alternatively, use the `done` callback to signal completion. If you include the `done` callback as a parameter in your test definition, you _must_ call it or the test will hang. ```ts import { expect, test } from "bun:test"; test("2 * 2", done => { Promise.resolve(2 * 2).then(result => { expect(result).toEqual(4); done(); }); }); ``` Skip individual tests with `test.skip`. ```ts import { expect, test } from "bun:test"; test.skip("wat", () => { // TODO: fix this expect(0.1 + 0.2).toEqual(0.3); }); ``` ## Setup and teardown Perform per-test setup and teardown logic with `beforeEach` and `afterEach`. ```ts import { expect, test } from "bun:test"; beforeEach(() => { console.log("running test."); }); afterEach(() => { console.log("done with test."); }); // tests... ``` Perform per-scope setup and teardown logic with `beforeAll` and `afterAll`. At the top-level, the _scope_ is the current file; in a `describe` block, the scope is the block itself. ```ts import { expect, test, beforeAll, afterAll } from "bun:test"; let db: Database; beforeAll(() => { // connect to database db = initializeDatabase(); }); afterAll(() => { // close connection db.close(); }); // tests... ``` ## Matchers Bun implements the following matchers. Full Jest compatibility is on the roadmap; track progress [here](https://github.com/oven-sh/bun/issues/1825). {% table %} - 🟢 - [`.not`](https://jestjs.io/docs/expect#not) --- - 🟢 - [`.toBe()`](https://jestjs.io/docs/expect#tobevalue) --- - 🟢 - [`.toEqual()`](https://jestjs.io/docs/expect#toequalvalue) --- - 🟢 - [`.toBeNull()`](https://jestjs.io/docs/expect#tobenull) --- - 🟢 - [`.toBeUndefined()`](https://jestjs.io/docs/expect#tobeundefined) --- - 🟢 - [`.toBeNaN()`](https://jestjs.io/docs/expect#tobenan) --- - 🟢 - [`.toBeDefined()`](https://jestjs.io/docs/expect#tobedefined) --- - 🟢 - [`.toBeFalsy()`](https://jestjs.io/docs/expect#tobefalsy) --- - 🟢 - [`.toBeTruthy()`](https://jestjs.io/docs/expect#tobetruthy) --- - 🟢 - [`.toContain()`](https://jestjs.io/docs/expect#tocontainitem) --- - 🟢 - [`.toStrictEqual()`](https://jestjs.io/docs/expect#tostrictequalvalue) --- - 🟢 - [`.toThrow()`](https://jestjs.io/docs/expect#tothrowerror) --- - 🟢 - [`.toHaveLength()`](https://jestjs.io/docs/expect#tohavelengthnumber) --- - 🟢 - [`.toHaveProperty()`](https://jestjs.io/docs/expect#tohavepropertykeypath-value) --- - 🔴 - [`.extend`](https://jestjs.io/docs/expect#expectextendmatchers) --- - 🔴 - [`.anything()`](https://jestjs.io/docs/expect#expectanything) --- - 🔴 - [`.any()`](https://jestjs.io/docs/expect#expectanyconstructor) --- - 🔴 - [`.arrayContaining()`](https://jestjs.io/docs/expect#expectarraycontainingarray) --- - 🔴 - [`.assertions()`](https://jestjs.io/docs/expect#expectassertionsnumber) --- - 🔴 - [`.closeTo()`](https://jestjs.io/docs/expect#expectclosetonumber-numdigits) --- - 🔴 - [`.hasAssertions()`](https://jestjs.io/docs/expect#expecthasassertions) --- - 🔴 - [`.objectContaining()`](https://jestjs.io/docs/expect#expectobjectcontainingobject) --- - 🔴 - [`.stringContaining()`](https://jestjs.io/docs/expect#expectstringcontainingstring) --- - 🔴 - [`.stringMatching()`](https://jestjs.io/docs/expect#expectstringmatchingstring--regexp) --- - 🔴 - [`.addSnapshotSerializer()`](https://jestjs.io/docs/expect#expectaddsnapshotserializerserializer) --- - 🔴 - [`.resolves()`](https://jestjs.io/docs/expect#resolves) --- - 🔴 - [`.rejects()`](https://jestjs.io/docs/expect#rejects) --- - 🔴 - [`.toHaveBeenCalled()`](https://jestjs.io/docs/expect#tohavebeencalled) --- - 🔴 - [`.toHaveBeenCalledTimes()`](https://jestjs.io/docs/expect#tohavebeencalledtimesnumber) --- - 🔴 - [`.toHaveBeenCalledWith()`](https://jestjs.io/docs/expect#tohavebeencalledwitharg1-arg2-) --- - 🔴 - [`.toHaveBeenLastCalledWith()`](https://jestjs.io/docs/expect#tohavebeenlastcalledwitharg1-arg2-) --- - 🔴 - [`.toHaveBeenNthCalledWith()`](https://jestjs.io/docs/expect#tohavebeennthcalledwithnthcall-arg1-arg2-) --- - 🔴 - [`.toHaveReturned()`](https://jestjs.io/docs/expect#tohavereturned) --- - 🔴 - [`.toHaveReturnedTimes()`](https://jestjs.io/docs/expect#tohavereturnedtimesnumber) --- - 🔴 - [`.toHaveReturnedWith()`](https://jestjs.io/docs/expect#tohavereturnedwithvalue) --- - 🔴 - [`.toHaveLastReturnedWith()`](https://jestjs.io/docs/expect#tohavelastreturnedwithvalue) --- - 🔴 - [`.toHaveNthReturnedWith()`](https://jestjs.io/docs/expect#tohaventhreturnedwithnthcall-value) --- - 🔴 - [`.toBeCloseTo()`](https://jestjs.io/docs/expect#tobeclosetonumber-numdigits) --- - 🟢 - [`.toBeGreaterThan()`](https://jestjs.io/docs/expect#tobegreaterthannumber--bigint) --- - 🟢 - [`.toBeGreaterThanOrEqual()`](https://jestjs.io/docs/expect#tobegreaterthanorequalnumber--bigint) --- - 🟢 - [`.toBeLessThan()`](https://jestjs.io/docs/expect#tobelessthannumber--bigint) --- - 🟢 - [`.toBeLessThanOrEqual()`](https://jestjs.io/docs/expect#tobelessthanorequalnumber--bigint) --- - 🟢 - [`.toBeInstanceOf()`](https://jestjs.io/docs/expect#tobeinstanceofclass) (Bun v0.5.8+) --- - 🔴 - [`.toContainEqual()`](https://jestjs.io/docs/expect#tocontainequalitem) --- - 🔴 - [`.toMatch()`](https://jestjs.io/docs/expect#tomatchregexp--string) --- - 🔴 - [`.toMatchObject()`](https://jestjs.io/docs/expect#tomatchobjectobject) --- - 🟢 - [`.toMatchSnapshot()`](https://jestjs.io/docs/expect#tomatchsnapshotpropertymatchers-hint) (Bun v0.5.8+) --- - 🔴 - [`.toMatchInlineSnapshot()`](https://jestjs.io/docs/expect#tomatchinlinesnapshotpropertymatchers-inlinesnapshot) --- - 🔴 - [`.toThrowErrorMatchingSnapshot()`](https://jestjs.io/docs/expect#tothrowerrormatchingsnapshothint) --- - 🔴 - [`.toThrowErrorMatchingInlineSnapshot()`](https://jestjs.io/docs/expect#tothrowerrormatchinginlinesnapshotinlinesnapshot) {% /table %} option value='feat/data-with-set'>feat/data-with-set Unnamed repository; edit this file 'description' to name the repository.
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2023-11-27Remove support for simple objects in endpoints (#9181)Gravatar Bjorn Lu 56-529/+206
* Deprecate simple object from endpoints * Update changeset * Add missing Response return Co-authored-by: Happydev <81974850+MoustaphaDev@users.noreply.github.com> * Update .changeset/clever-beds-notice.md Co-authored-by: Sarah Rainsberger <sarah@rainsberger.ca> --------- Co-authored-by: Happydev <81974850+MoustaphaDev@users.noreply.github.com> Co-authored-by: Matthew Phillips <matthew@skypack.dev> Co-authored-by: Sarah Rainsberger <sarah@rainsberger.ca>
2023-11-28Remove shiki lang path property support (#9196)Gravatar Bjorn Lu 7-427/+22
2023-11-28Remove deprecated features from Astro 3.0 (#9168)Gravatar Bjorn Lu 47-398/+95
2023-11-28Remove deprecated markdown-remark APIs (#9182)Gravatar Bjorn Lu 4-59/+7
2023-11-27[ci] release (#9180)astro@3.6.1Gravatar Houston (Bot) 32-65/+63
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
2023-11-24Remove vercel deprecated analytics option (#9184)Gravatar Bjorn Lu 3-30/+12
2023-11-24[ci] formatGravatar Guspan Tanadi 1-2/+1
2023-11-24style: highlight markdown Tip Note section CONTRIBUTING (#9123)Gravatar Guspan Tanadi 1-5/+7
2023-11-23fix scroll restoration issue on webKit browsers (#9186)Gravatar Martin Trapp 2-1/+7
* fix scroll restoration issue on webKit browsers * add changeset * Update .changeset/shaggy-socks-glow.md * Update .changeset/shaggy-socks-glow.md Co-authored-by: Sarah Rainsberger <sarah@rainsberger.ca> --------- Co-authored-by: Sarah Rainsberger <sarah@rainsberger.ca>
2023-11-23fix(middleware): rename internal middleware id (#9173)Gravatar Arsh 2-1/+6
* rename internal middleware id * add changeset
2023-11-23fix: Changelog formatting for 3.6.0 View Transition events (#9176)Gravatar Martin Trapp 1-3/+3
Co-authored-by: Eva Decker <itsevadecker@gmail.com>
2023-11-22[ci] formatGravatar Eva Decker 1-3/+3
2023-11-22Fix View Transitions code block formatting (#9174)Gravatar Eva Decker 1-3/+3
2023-11-22Rename entryPoint to entrypoint (#9161)Gravatar Bjorn Lu 14-26/+38
Co-authored-by: Sarah Rainsberger <sarah@rainsberger.ca>
2023-11-22Fix esbuild warning for local dev (#9160)Gravatar Bjorn Lu 1-1/+1
2023-11-22[ci] release (#9165)astro@3.6.0Gravatar Houston (Bot) 34-90/+83
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>