刘宇飞
6e0a1fbcbb
Includes scratch-gui, scratch-vm, scratch-blocks, scratch-render, scratch-l10n, and deployment config. Co-authored-by: Cursor <cursoragent@cursor.com>
22 lines
752 B
Markdown
22 lines
752 B
Markdown
# Snapshot tests
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Snapshot testing runs the compiler on many of the test projects in test/fixtures/execute and verifies that the compiled output is identical to a pre-calculated "snapshot". This verifies:
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- The compiler is deterministic (mostly)
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- The compiler's output does not change unexpectedly
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- Optimizations and type analysis in the generated code are working properly
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These snapshots are automatically verified as part of the integration tests. There is also a more readable CLI for humans. To verify the snapshots:
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```
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node test/snapshot
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```
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When the compiler's output or the test projects have intentionally changed, run:
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```
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node test/snapshot --update
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```
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Verify that the snapshot diff is what you expect, then commit the changes.
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