CSF Next: Propagate skip tags to .test children

[kwonoj]

Closes #34962

What I did

This PR is an attempt to close #34962, allow to propagate skip tags to the test() story child with csf factories. Original issue explains current behavior - tags are not currently passed through.

Checklist for Contributors

Testing

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

ø

Manual testing

1. Clone repro
2. Install with NPM and then swap Sb for canary version
3. Run npm run test-storybook

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 pull request has been released as version 0.0.0-pr-34964-sha-e5a2e62a. Try it out in a new sandbox by running npx storybook@0.0.0-pr-34964-sha-e5a2e62a sandbox or in an existing project with npx storybook@0.0.0-pr-34964-sha-e5a2e62a upgrade.

More information

Published version	0.0.0-pr-34964-sha-e5a2e62a
Triggered by	@Sidnioulz
Repository	kwonoj/storybook
Branch	fix-test-factory-tags
Commit	e5a2e62a
Datetime	Fri May 29 10:22:56 UTC 2026 (1780050176)
Workflow run	26631901616

To request a new release of this pull request, mention the @storybookjs/core team.

core team members can create a new canary release here or locally with gh workflow run --repo storybookjs/storybook publish.yml --field pr=34964

Summary by CodeRabbit

Release Notes

• Bug Fixes

  • Fixed skip tags not being properly forwarded to child story tests, ensuring consistent filtering behavior across all generated test cases.

• Tests

  • Added test coverage for skip tags propagation with child tests in both standard and factory-based story patterns.

[coderabbitai]

Actionable comments posted: 0

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: a798b3d1-7cdc-43ed-a7dd-072b352fc089

📥 Commits

Reviewing files that changed from the base of the PR and between 62e3fc2 and e5a2e62.

📒 Files selected for processing (2)

• code/core/src/csf-tools/vitest-plugin/transformer.test.ts
• code/core/src/csf-tools/vitest-plugin/transformer.ts

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📝 Walkthrough

Walkthrough

The PR propagates tagsFilter.skip to child .test() calls on stories, not just top-level story tests. A single-line change in getDescribeStatementForStory uses the configured skipTagsId instead of an empty array. Two new test cases verify this behavior for both traditional CSF and CSF Factory patterns, checking generated describe/test wrapping and correct tag forwarding.

Changes

Skip-tag propagation to child tests

Layer / File(s)	Summary
Core implementation: skipTags propagation code/core/src/csf-tools/vitest-plugin/transformer.ts	getDescribeStatementForStory now passes skipTagsId (derived from tagsFilter.skip) to each testStory options object instead of an empty array, ensuring child tests respect skip-tag configuration.
Test coverage for child test skip-tag propagation code/core/src/csf-tools/vitest-plugin/transformer.test.ts	Two new snapshot test cases verify propagation of skipTags to child .test() calls for both CSF v1/v2/v3-style stories and CSF Factory patterns, asserting correct _describe wrapping, _test emissions, and distinct storyId/testName values.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

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[storybook-app-bot]

Package Benchmarks

^{Commit: e5a2e62, ran on 29 May 2026 at 09:45:48 UTC}

The following packages have significant changes to their size or dependencies:

storybook

	Before	After	Difference
Dependency count	72	72	0
Self size	20.38 MB	20.31 MB	🎉 -71 KB 🎉
Dependency size	36.11 MB	36.11 MB	0 B
Bundle Size Analyzer	Link	Link

@storybook/cli

	Before	After	Difference
Dependency count	203	203	0
Self size	908 KB	908 KB	🎉 -144 B 🎉
Dependency size	88.57 MB	88.50 MB	🎉 -71 KB 🎉
Bundle Size Analyzer	Link	Link

@storybook/codemod

	Before	After	Difference
Dependency count	196	196	0
Self size	32 KB	32 KB	🚨 +36 B 🚨
Dependency size	87.06 MB	86.99 MB	🎉 -71 KB 🎉
Bundle Size Analyzer	Link	Link

create-storybook

	Before	After	Difference
Dependency count	73	73	0
Self size	1.08 MB	1.08 MB	🎉 -66 B 🎉
Dependency size	56.49 MB	56.42 MB	🎉 -71 KB 🎉
Bundle Size Analyzer	node	node

[Sidnioulz]

Tested with canary, fixes the bug. Handing over to @yannbf.