New cause of "No test suite found in file" error

[NateRobinsonAA]

Describe the bug

I came across this error and the fix seemed to be to move the export const statement from the spec, then put it in its own file.

I 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.

https://stackblitz.com/edit/stackblitz-starters-sj74ev3n?file=src%2Fabc.spec.ts

Reproduction

Run the test from command line, using npm run test. See that the main.spec.ts file reportedly has no tests, which is false. Then, remove the following line from abc.spec.ts:

import { foo as mainFoo } from './main.spec';

Then, of course, remove the usage of that const from the test. Now the tests all pass.

System Info

Stackblitz

Used Package Manager

npm

Validations

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• Read the Contributing Guidelines.
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• The provided reproduction is a minimal reproducible example of the bug.

[AriPerkkio]

Can you update the reproduction to run vitest instead of ng test? If this doesn't happen with plain Vitest, you should file this to Angular instead.

[github-actions]

Hello @NateRobinsonAA. Please provide a minimal reproduction using a GitHub repository or StackBlitz (you can also use examples). Issues marked with needs reproduction will be closed if they have no activity within 3 days.

[NateRobinsonAA]

Incredible, running just the command vitest works, and this is the output:

~/projects/stackblitz-starters-sj74ev3n 2h 31m 53s
❯ vitest

 DEV  v4.0.16 /home/projects/stackblitz-starters-sj74ev3n

 ✓ src/abc.spec.ts > Main > should run 1ms
 ✓ src/abc.spec.ts > Main > should run 0ms
 ✓ src/main.spec.ts > Main > should run 1ms

 Test Files  2 passed (2)
      Tests  3 passed (3)
   Start at  14:05:01
   Duration  3.23s (transform 50ms, setup 0ms, import 73ms, tests 6ms, environment 1.42s)

Same setup, different command:

❯ npm run test

> test
> ng test --no-watch

 RUN  v4.0.16 /home/projects/stackblitz-starters-sj74ev3n

 ✓  demo  src/abc.spec.ts > Main > should run 2ms
 ✓  demo  src/abc.spec.ts > Main > should run 0ms

⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯ Failed Suites 1 ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯

 FAIL   demo  src/main.spec.ts [ src/main.spec.ts ]
Error: No test suite found in file /home/projects/stackblitz-starters-sj74ev3n/src/main.spec.ts
⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯[1/1]⎯


 Test Files  1 failed | 1 passed (2)
      Tests  2 passed (2)
   Start at  14:05:42
   Duration  3.52s (transform 91ms, setup 2.06s, import 51ms, tests 5ms, environment 620ms)

I'll file this with Angular right away. Thank you!