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44 lines
2.0 KiB
Markdown
44 lines
2.0 KiB
Markdown
# Catala test suite
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This folder contains Catala source files designed to test the features of the
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language.
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It uses `make pass_tests` to launch tests and compare the test terminal output
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with an expected output.
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Expected outputs are stored using the convention
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`<name_of_test>.catala_<language>.<name_of_scope>.out` in the corresponding test output folder.
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For both workflows: use `CATALA_OPTS="..." make ...` to pass in Catala compiler
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options when debugging.
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## Workflow for adding new tests
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1. Create a new test file in `foo/{good,bad}/bar.catala_<language>` (pick the right directory and
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an informative name for your test)
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2. Write your test, and pick a toplevel scope `A` to run.
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3. From this directory, launch `make foo/{good,bad}/bar.catala_<language>.A.run` to get the output of
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your test.
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4. When you're happy with the output, launch `make foo/{good,bad}/bar.catala_<language>.A.in`. This
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will record the content of the output of your test into a file.
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5. Check that your test pass with `make foo/{good,bad}/output/bar.catala_<language>.A.out`.
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6. That's it, you've added a new test for the Catala language!
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## Workflow for fixing regressions
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1. Run `make`, if a test fails you should see something like
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`[FAIL foo/{good,bad}/output/bar.catala_<language>.A]`.
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2. Compare the computed and expected output with `make foo/{good,bad}/output/bar.catala_<language>.A.out`.
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3. Debug the compiler and/or the test, running `make foo/{good,bad}/bar.catala_<language>.A.run`
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periodically to check the output of Catala on the test case.
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4. When you're finished debugging, record the new test output with
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`make foo/{good,bad}/bar.catala_<language>.A.in`.
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5. Re-run `make` to check that everything passes.
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6. That's it, you've fixed the Catala test suite to adapt for changes in the
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language.
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If a compiler change causes a lot of regressions (error message formatting changes
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for instance), you can mass-reset the expected the outputs with `make reset_tests`.
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**Caution**: use at your own risk, regressions should be fixed one by one in
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general.
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