Fail screenshot CI if fixtures with tag blocks-ci change#308192
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Pull request overview
Adds a CI gate to ensure that component fixture screenshots tagged blocks-ci cannot change without updating a committed, CI-generated markdown manifest, and attempts to provide an in-PR suggestion to update the manifest when changes are detected.
Changes:
- Add a committed, CI-generated markdown file listing
blocks-cifixtures and their screenshot hashes/URLs. - Add a build script to generate/compare the expected markdown from the render manifest and emit a GitHub-suggestion-friendly diff.
- Update the screenshot GitHub Actions workflow to run the check, post a suggestion on PRs, and fail the job on mismatch.
Show a summary per file
| File | Description |
|---|---|
test/componentFixtures/blocks-ci-screenshots.md |
New committed “expected hashes” manifest for blocks-ci screenshot fixtures. |
build/lib/screenshotBlocksCi.ts |
New comparator/generator script used by CI to detect and report blocks-ci screenshot hash changes. |
.github/workflows/screenshot-test.yml |
Runs the new check in CI, posts a PR suggestion, and fails the workflow if blocks-ci hashes changed. |
Copilot's findings
- Files reviewed: 3/3 changed files
- Comments generated: 2
Contributor
Screenshot ChangesBase: Changed (1)
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ulugbekna
approved these changes
Apr 7, 2026
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