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