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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"\"No test suite found in file\" error when running Vitest","articleBody":"### Which @angular/* package(s) are the source of the bug?\n\nDon't known / other\n\n### Is this a regression?\n\nNo\n\n### Description\n\nI came across this error and the fix seemed to be to remove the `export const` statement from the spec, then export it from its own file.\n\nI first reported this to Vitest, but they pointed out that running the test using `npm run test` fails while simple running with the command `vitest` passes. The maintainers suggested that it was an Angular bug.\n\nI created a new StackBlitz from the Angular template, ensured that it was the latest version of Angular, installed vitest and jsdom, and added the minimum config to get it up and running.\n\n### Please provide a link to a minimal reproduction of the bug\n\nhttps://stackblitz.com/edit/stackblitz-starters-sj74ev3n?file=src%2Fabc.spec.ts\n\n### Please provide the exception or error you saw\n\n```true\n❯ npm run test\n\n\u003e test\n\u003e ng test --no-watch\n\n RUN  v4.0.16 /home/projects/stackblitz-starters-sj74ev3n\n\n ✓  demo  src/abc.spec.ts \u003e Main \u003e should run 2ms\n ✓  demo  src/abc.spec.ts \u003e Main \u003e should run 0ms\n\n⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ Failed Suites 1 ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯\n\n FAIL   demo  src/main.spec.ts [ src/main.spec.ts ]\nError: No test suite found in file /home/projects/stackblitz-starters-sj74ev3n/src/main.spec.ts\n⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯[1/1]⎯\n\n\n Test Files  1 failed | 1 passed (2)\n      Tests  2 passed (2)\n   Start at  14:05:42\n   Duration  3.52s (transform 91ms, setup 2.06s, import 51ms, tests 5ms, environment 620ms)\n```\n\n### Please provide the environment you discovered this bug in (run `ng version`)\n\n```true\nAngular CLI       : 21.0.2\nAngular           : 21.0.3\nNode.js           : 20.19.1\nPackage Manager   : npm 10.8.2\nOperating System  : linux x64\n\n┌───────────────────────────┬───────────────────┬───────────────────┐\n│ Package                   │ Installed Version │ Requested Version │\n├───────────────────────────┼───────────────────┼───────────────────┤\n│ @angular/animations       │ 21.0.3            │ ^21.0.3           │\n│ @angular/build            │ 21.0.2            │ ^21.0.2           │\n│ @angular/cli              │ 21.0.2            │ ^21.0.2           │\n│ @angular/common           │ 21.0.3            │ ^21.0.3           │\n│ @angular/compiler         │ 21.0.3            │ ^21.0.3           │\n│ @angular/compiler-cli     │ 21.0.3            │ ^21.0.3           │\n│ @angular/core             │ 21.0.3            │ ^21.0.3           │\n│ @angular/forms            │ 21.0.3            │ ^21.0.3           │\n│ @angular/platform-browser │ 21.0.3            │ ^21.0.3           │\n│ @angular/router           │ 21.0.3            │ ^21.0.3           │\n│ rxjs                      │ 7.8.2             │ ^7.8.1            │\n│ typescript                │ 5.9.3             │ ^5.9.3            │\n│ vitest                    │ 4.0.16            │ ^4.0.15           │\n│ zone.js                   │ 0.16.0            │ ^0.16.0           │\n└───────────────────────────┴───────────────────┴───────────────────┘\n```\n\n### Anything else?\n\nOriginal issue report to Vitest: https://github.com/vitest-dev/vitest/issues/9412#issuecomment-3725079819","author":{"url":"https://github.com/NateRobinsonAA","@type":"Person","name":"NateRobinsonAA"},"datePublished":"2026-01-08T20:29:14.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":1},"url":"https://github.com/32252/angular-cli/issues/32252"}