26 lines
822 B
Markdown
26 lines
822 B
Markdown
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# JavaScript tests with expected output
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Tests in test/message pass if the output matches the expected output. Message
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tests are particularly useful when checking for exact error messages.
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Tests and their expected output must have the same filename, with the `.js` and
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`.out` extension.
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```
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foo.js
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foo.out
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```
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**All tests must end with an exception**. The test runner does not
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handle output from multiple runs, e.g., `--stress-opt`. Without an exception,
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the output will be generated several times and the comparison will fail.
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You can use a regex in the expected output. Instead of the exact
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path. use
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```
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*%(basename)s:7: SyntaxError: Detected cycle while resolving name 'a'
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```
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Empty lines are ignored in the comparison, but whitespaces are not.
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Exact details of the test runner are in [testcfg.py](testcfg.py).
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