René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"mock.timers ignores AbortSignal.timeout","articleBody":"### Version\n\nv24.10.0, v25.1.0\n\n### Platform\n\n```text\nMicrosoft Windows NT 10.0.26100.0\nx64\n```\n\n### Subsystem\n\n_No response_\n\n### What steps will reproduce the bug?\n\nExecute this test:\n```js\nimport {\n    beforeEach,\n    describe,\n    it,\n    mock\n} from \"node:test\";\nimport assert from \"node:assert\";\n\ndescribe(\"test\", () =\u003e {\n    beforeEach(() =\u003e {\n        mock.timers.enable({ apis: [\"Date\", \"setTimeout\"] });\n    });\n\n    it(\"should test abort\", { timeout: 5000 }, async () =\u003e {\n        const timeout = AbortSignal.timeout(10000);\n        const catchSpy = mock.fn();\n        const abortablePromise = new Promise((_, reject) =\u003e {\n            timeout.addEventListener(\"abort\", () =\u003e {\n                reject(new Error(\"promise rejected due to abort signal\"));\n            });\n        }).catch(catchSpy);\n        assert.equal(catchSpy.mock.calls.length, 0);\n        await Promise.resolve();\n        mock.timers.tick(10000);\n        await abortablePromise;\n        assert.equal(catchSpy.mock.calls.length, 1);\n    });\n});\n```\n\nIt times out.\n\n### How often does it reproduce? Is there a required condition?\n\nEvery time.\n\n### What is the expected behavior? Why is that the expected behavior?\n\nThe timer tick also ticks the timeout AbortSignal and triggers listeners if applicable, or the mock.timers.enable option supports a new \"AbortSignal.timeout\" API.\n\n### What do you see instead?\n\nThe test times out before the abort signal is triggered.\n\n### Additional information\n\nIn node versions \u003c24, this results in a failing test after a few milliseconds with\n\"Promise resolution is still pending but the event loop has already resolved\".","author":{"url":"https://github.com/DerGernTod","@type":"Person","name":"DerGernTod"},"datePublished":"2025-10-31T10:41:54.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/60509/node/issues/60509"}