pfg 250d30eb7d Concurrent limit --max-concurrency, defaults to 20 (#22944) ...

### What does this PR do?

Adds a max-concurrency flag to limit the amount of concurrent tests that
run at once. Defaults to 20. Jest and Vitest both default to 5.

### How did you verify your code works?

Tests

---------

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
Co-authored-by: Jarred Sumner <jarred@jarredsumner.com>

2025-09-26 16:39:08 -07:00

..

__snapshots__

Prevent test.only and snapshot updates in CI (#21811)

2025-09-24 15:19:16 -07:00

cross-file-safety

Rewrite test/describe, add test.concurrent (#22534)

2025-09-20 00:35:42 -07:00

expect

expect.toHaveReturnedWith/toHaveLastReturnedWith/toHaveNthReturnedWith (#21363)

2025-08-01 15:09:03 -07:00

fixtures

fix(bun/test): it.failing for tests using done callbacks (#19018)

2025-04-14 19:29:05 -07:00

mock

run prettier and add back format action (#13722)

2024-09-03 21:32:52 -07:00

printing

Only highlight per chunk instead of per line (#21729)

2025-08-09 21:35:17 -07:00

scheduling

Rewrite test/describe, add test.concurrent (#22534)

2025-09-20 00:35:42 -07:00

snapshot-tests

Prevent test.only and snapshot updates in CI (#21811)

2025-09-24 15:19:16 -07:00

bun_test.fixture.ts

Rewrite test/describe, add test.concurrent (#22534)

2025-09-20 00:35:42 -07:00

bun_test.test.ts

Rewrite test/describe, add test.concurrent (#22534)

2025-09-20 00:35:42 -07:00

bun-test.test.ts

finish implementing JSMockFunction prototype + lots of expect test organizing (#3304)

2023-06-21 12:59:56 -07:00

ci-restrictions.test.ts

Prevent test.only and snapshot updates in CI (#21811)

2025-09-24 15:19:16 -07:00

concurrent_immediate_error_promise.fixture.ts

Synchronous concurrent test fix (#22928)

2025-09-25 03:52:18 -07:00

concurrent_immediate_error.fixture.ts

Synchronous concurrent test fix (#22928)

2025-09-25 03:52:18 -07:00

concurrent_immediate_promise.fixture.ts

Synchronous concurrent test fix (#22928)

2025-09-25 03:52:18 -07:00

concurrent_immediate.fixture.ts

Synchronous concurrent test fix (#22928)

2025-09-25 03:52:18 -07:00

concurrent_immediate.test.ts

Synchronous concurrent test fix (#22928)

2025-09-25 03:52:18 -07:00

concurrent-max.fixture.ts

Concurrent limit --max-concurrency, defaults to 20 (#22944)

2025-09-26 16:39:08 -07:00

concurrent.fixture.ts

Rewrite test/describe, add test.concurrent (#22534)

2025-09-20 00:35:42 -07:00

concurrent.test.ts

Concurrent limit --max-concurrency, defaults to 20 (#22944)

2025-09-26 16:39:08 -07:00

custom-matcher-preload-test-fixture-1.ts

Allow expect.extend in preload, remove "expect must be called in a test" error (#7430)

2023-12-03 22:31:56 -08:00

custom-matcher-preload-test-fixture-2.ts

run prettier and add back format action (#13722)

2024-09-03 21:32:52 -07:00

describe.test.ts

Fix formatters not running in CI + delete unnecessary files (#19433)

2025-05-08 23:22:16 -07:00

done-async.test.ts

run prettier and add back format action (#13722)

2024-09-03 21:32:52 -07:00

done-infinity.fixture.ts

run prettier and add back format action (#13722)

2024-09-03 21:32:52 -07:00

err-custom-fixture.js

Add test for line and column property on Error instance (#11940)

2024-06-18 14:42:58 -07:00

err-fd-fixture.js

Add test for line and column property on Error instance (#11940)

2024-06-18 14:42:58 -07:00

err-stack-fixture.js

Add test for line and column property on Error instance (#11940)

2024-06-18 14:42:58 -07:00

expect-assertions-fixture.ts

Fix expect.assertions() and done callback (#13463)

2024-08-22 15:26:58 -07:00

expect-assertions.test.ts

run prettier and add back format action (#13722)

2024-09-03 21:32:52 -07:00

expect-extend-preload.test.ts

run prettier and add back format action (#13722)

2024-09-03 21:32:52 -07:00

expect-extend.test.js

fix(test): add EXPECTED_COLOR and RECEIVED_COLOR aliases (#22862)

2025-09-22 18:43:28 -07:00

expect-extend.types.d.ts

Support asymmetric matchers with equals in expect.extend (#10602)

2024-04-29 10:37:35 -07:00

expect-label.test.ts

run prettier and add back format action (#13722)

2024-09-03 21:32:52 -07:00

expect-toHaveReturnedWith.test.js

expect.toHaveReturnedWith/toHaveLastReturnedWith/toHaveNthReturnedWith (#21363)

2025-08-01 15:09:03 -07:00

expect-type-doctest.test.ts

Implement expectTypeOf (#21513)

2025-08-01 12:11:03 -07:00

expect-type-global.test.ts

Implement expectTypeOf (#21513)

2025-08-01 12:11:03 -07:00

expect-type.test.ts

Implement expectTypeOf (#21513)

2025-08-01 12:11:03 -07:00

expect-unreaachable.test.ts

run prettier and add back format action (#13722)

2024-09-03 21:32:52 -07:00

expect.test.js

Fix NODE_PATH for bun build (#20576)

2025-06-22 20:51:45 -07:00

failure-skip.fixture.ts

Rewrite test/describe, add test.concurrent (#22534)

2025-09-20 00:35:42 -07:00

failure-skip.test.ts

Rewrite test/describe, add test.concurrent (#22534)

2025-09-20 00:35:42 -07:00

jest-doesnt-auto-import.js

Reorganize tests (#2332)

2023-03-07 12:22:34 -08:00

jest-each.test.ts

fix(bun:test): make sure test.each doesn't return .zero (#12828)

2024-07-25 18:24:16 -07:00

jest-extended.test.js

Fix toIncludeRepeated (#21366)

2025-07-25 22:22:04 -07:00

jest-hooks.test.ts

fix(jest): beforeEach, afterEach not called for test.todo (#12406)

2024-07-09 23:15:27 -07:00

jest.config.js

feat(test): expect.extend and asymmetric matcher improvements (#7319)

2023-11-29 23:20:25 -08:00

jest.d.ts

fix: scanner on update, install, remove, uninstall and add, and introduce the pm scan command (#22193)

2025-09-09 21:42:01 -07:00

mock-fn.test.js

expect.toHaveReturnedWith/toHaveLastReturnedWith/toHaveNthReturnedWith (#21363)

2025-08-01 15:09:03 -07:00

nested-describes.test.ts

Reorganize tests (#2332)

2023-03-07 12:22:34 -08:00

only-fixture-1.ts

You shouldn't need --only to only run test.only tests (#13465)

2024-08-23 00:06:57 -07:00

only-fixture-2.ts

You shouldn't need --only to only run test.only tests (#13465)

2024-08-23 00:06:57 -07:00

only-fixture-3.ts

You shouldn't need --only to only run test.only tests (#13465)

2024-08-23 00:06:57 -07:00

only-fixture-4.ts

You shouldn't need --only to only run test.only tests (#13465)

2024-08-23 00:06:57 -07:00

only-inside-only.fixture.ts

Rewrite test/describe, add test.concurrent (#22534)

2025-09-20 00:35:42 -07:00

only-inside-only.test.ts

Rewrite test/describe, add test.concurrent (#22534)

2025-09-20 00:35:42 -07:00

package.json

feat(test): expect.extend and asymmetric matcher improvements (#7319)

2023-11-29 23:20:25 -08:00

preload-test.test.js

run prettier and add back format action (#13722)

2024-09-03 21:32:52 -07:00

setTimeout-test-fixture.js

run prettier and add back format action (#13722)

2024-09-03 21:32:52 -07:00

skip-test-fixture.js

run prettier and add back format action (#13722)

2024-09-03 21:32:52 -07:00

spyMatchers.test.ts

expect.toHaveReturnedWith/toHaveLastReturnedWith/toHaveNthReturnedWith (#21363)

2025-08-01 15:09:03 -07:00

stack.test.ts

Enable async stack traces (#22517)

2025-09-11 17:53:06 -07:00

test-auto-import-jest-globals.test.js

Reorganize tests (#2332)

2023-03-07 12:22:34 -08:00

test-error-code-done-callback.test.ts

Rewrite test/describe, add test.concurrent (#22534)

2025-09-20 00:35:42 -07:00

test-error-done-callback-fixture.ts

Fixes #18956 (#18971)

2025-04-12 06:16:55 -07:00

test-failing.test.ts

Rewrite test/describe, add test.concurrent (#22534)

2025-09-20 00:35:42 -07:00

test-fixture-diff-indexed-properties.js

run prettier and add back format action (#13722)

2024-09-03 21:32:52 -07:00

test-fixture-preload-global-lifecycle-hook-preloaded.js

run prettier and add back format action (#13722)

2024-09-03 21:32:52 -07:00

test-fixture-preload-global-lifecycle-hook-test.js

Rewrite test/describe, add test.concurrent (#22534)

2025-09-20 00:35:42 -07:00

test-interop.js

feat(test): expect.extend and asymmetric matcher improvements (#7319)

2023-11-29 23:20:25 -08:00

test-only.test.ts

Prevent test.only and snapshot updates in CI (#21811)

2025-09-24 15:19:16 -07:00

test-serial.test.ts

feat: add test.serial() API for forcing serial test execution (#22899)

2025-09-23 21:06:06 -07:00

test-test.test.ts

Rewrite test/describe, add test.concurrent (#22534)

2025-09-20 00:35:42 -07:00

test-timers.test.ts

fix(setSystemTime) fix number parameter behavior (#12630)

2024-07-17 17:09:24 -07:00

timeout-test-fixture.js

Small improvements to bun test (#3071)

2023-05-31 23:12:04 -07:00

todo-test-fixture-2.js

WS send with callback (#2986)

2023-05-21 19:36:42 -07:00

todo-test-fixture.js

run prettier and add back format action (#13722)

2024-09-03 21:32:52 -07:00