Improve testing framework #2

2026-05-20T11:16:41Z

HEL commented

2026-05-20 11:16:41 +00:00

This PR adds a custom snapshot tester script to run the lexer and parser on full Midas source files and compare the outputs / errors with reference snapshots
This Golden Exemplar approach allows broader, more complete tests without the need to tediously define all cases.
The already implemented tests have been kept for reference and because they still make sense

Running the tester

python tester.py run -a

Updating snapshots

python tester.py update -a

This PR adds a custom snapshot tester script to run the lexer and parser on full Midas source files and compare the outputs / errors with reference snapshots This _Golden Exemplar_ approach allows broader, more complete tests without the need to tediously define all cases. The already implemented tests have been kept for reference and because they still make sense ## Running the tester ```bash python tester.py run -a ``` ## Updating snapshots ```bash python tester.py update -a ```

HEL self-assigned this 2026-05-20 11:16:41 +00:00

HEL added 4 commits 2026-05-20 11:16:41 +00:00

feat(parser): use custom syntax error class 1fa9a09bfe

feat(tests): add AST JSON serializer 7cbf4fdece

tests(parser): add snapshot test runner db4ed74365

the diff printing function was suggested by Gemini

Co-authored-by: Gemini <noreply@gemini.google.com>

tests(parser): add simple types snapshot test 88f92d6e1f

HEL merged commit 875ca589e4 into main

2026-05-20 11:17:01 +00:00

HEL deleted branch feat/test-framework

2026-05-20 11:17:01 +00:00

HEL referenced this issue from a commit

2026-05-20 11:17:02 +00:00

Merge pull request 'Improve testing framework' (#2) from feat/test-framework into main

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Reference: HEL/midas#2