Addon Test: Fix run request while booting or restarting Vitest

[ghengeveld]

Fixes #29784

What I did

• Added an event queue for events that come in while Vitest is booting, and resends them as soon as Vitest is ready.
• Added a vitestRestartPromise which is pending while Vitest is restarting, and is awaited before starting a test run.
• Cleared progress when starting a new test run.

Checklist for Contributors

Testing

The changes in this PR are covered in the following automated tests:

• stories
• unit tests
• integration tests
• end-to-end tests

Manual testing

This section is mandatory for all contributions. If you believe no manual test is necessary, please state so explicitly. Thanks!

Documentation

• Add or update documentation reflecting your changes
• If you are deprecating/removing a feature, make sure to update
  MIGRATION.MD

Checklist for Maintainers

• When this PR is ready for testing, make sure to add ci:normal, ci:merged or ci:daily GH label to it to run a specific set of sandboxes. The particular set of sandboxes can be found in code/lib/cli-storybook/src/sandbox-templates.ts

• Make sure this PR contains one of the labels below:

  Available labels

  • bug: Internal changes that fixes incorrect behavior.
  • maintenance: User-facing maintenance tasks.
  • dependencies: Upgrading (sometimes downgrading) dependencies.
  • build: Internal-facing build tooling & test updates. Will not show up in release changelog.
  • cleanup: Minor cleanup style change. Will not show up in release changelog.
  • documentation: Documentation only changes. Will not show up in release changelog.
  • feature request: Introducing a new feature.
  • BREAKING CHANGE: Changes that break compatibility in some way with current major version.
  • other: Changes that don't fit in the above categories.

🦋 Canary release

This PR does not have a canary release associated. You can request a canary release of this pull request by mentioning the @storybookjs/core team here.

core team members can create a canary release here or locally with gh workflow run --repo storybookjs/storybook canary-release-pr.yml --field pr=<PR_NUMBER>

name	before	after	diff	z	%
createSize	0 B	0 B	0 B	-	-
generateSize	77.7 MB	77.7 MB	0 B	-1.41	0%
initSize	130 MB	130 MB	168 B	-1.27	0%
diffSize	52.5 MB	52.5 MB	168 B	1.36	0%
buildSize	6.75 MB	6.75 MB	56 B	Infinity	0%
buildSbAddonsSize	1.51 MB	1.51 MB	0 B	-	0%
buildSbCommonSize	195 kB	195 kB	0 B	-	0%
buildSbManagerSize	1.86 MB	1.86 MB	56 B	Infinity	0%
buildSbPreviewSize	0 B	0 B	0 B	-	-
buildStaticSize	0 B	0 B	0 B	-	-
buildPrebuildSize	3.57 MB	3.57 MB	56 B	Infinity	0%
buildPreviewSize	3.19 MB	3.19 MB	0 B	-	0%
testBuildSize	0 B	0 B	0 B	-	-
testBuildSbAddonsSize	0 B	0 B	0 B	-	-
testBuildSbCommonSize	0 B	0 B	0 B	-	-
testBuildSbManagerSize	0 B	0 B	0 B	-	-
testBuildSbPreviewSize	0 B	0 B	0 B	-	-
testBuildStaticSize	0 B	0 B	0 B	-	-
testBuildPrebuildSize	0 B	0 B	0 B	-	-
testBuildPreviewSize	0 B	0 B	0 B	-	-

name	before	after	diff	z	%
createTime	6.4s	6.5s	49ms	-0.83	0.8%
generateTime	18.8s	20.6s	1.8s	-0.05	9%
initTime	12.1s	15.1s	2.9s	1.8	🔺19.6%
buildTime	8.9s	7.6s	-1s -334ms	-1.95	🔰-17.5%
testBuildTime	0ms	0ms	0ms	-	-
devPreviewResponsive	4.6s	4.2s	-412ms	-1.09	-9.7%
devManagerResponsive	3.5s	3.1s	-365ms	-0.97	-11.6%
devManagerHeaderVisible	509ms	503ms	-6ms	-1.09	-1.2%
devManagerIndexVisible	573ms	533ms	-40ms	-1.97	🔰-7.5%
devStoryVisibleUncached	1.7s	1.7s	-51ms	-0.53	-2.9%
devStoryVisible	574ms	530ms	-44ms	-2.19	🔰-8.3%
devAutodocsVisible	505ms	515ms	10ms	1.67	1.9%
devMDXVisible	499ms	463ms	-36ms	-2.08	🔰-7.8%
buildManagerHeaderVisible	530ms	485ms	-45ms	-1.92	🔰-9.3%
buildManagerIndexVisible	606ms	550ms	-56ms	-2.09	🔰-10.2%
buildStoryVisible	491ms	443ms	-48ms	-2.35	🔰-10.8%
buildAutodocsVisible	381ms	383ms	2ms	-0.66	0.5%
buildMDXVisible	403ms	389ms	-14ms	-1.72	-3.6%

Greptile Summary

Improved test run handling in Storybook's Vitest integration by adding event queuing during boot/restart phases and proper state management through promises.

• Added event queue in boot-test-runner.ts to store and replay events that occur while Vitest is initializing
• Added vitestRestartPromise in vitest-manager.ts to properly sequence operations during Vitest restarts
• Refactored static file handling to be synchronous in server-statics.ts for better startup reliability
• Fixed state management in experimental_testmodule.ts to correctly handle test provider state clearing and progress tracking
• Added proper error handling for static directory configuration in Vitest plugin integration

[greptile-apps]

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