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>
Snapshot tests
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:
- The compiler is deterministic (mostly)
- The compiler's output does not change unexpectedly
- Optimizations and type analysis in the generated code are working properly
These snapshots are automatically verified as part of the integration tests. There is also a more readable CLI for humans. To verify the snapshots:
node test/snapshot
When the compiler's output or the test projects have intentionally changed, run:
node test/snapshot --update
Verify that the snapshot diff is what you expect, then commit the changes.