fix(gazelle): generate a single py_test for coarse_grained setups
#1538
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With a recent change to generate a single test target per python file we introduced a regression for projects using `# gazelle:python_generation_mode project` configuration directive if there are multiple files with the same filenames but under different directories within the source tree. This PR fixes the behaviour so that we just generate a single target containing all test files as there is no sure way to denormalize the paths so that they never clash. Fixes bazel-contrib#1442.
rickeylev
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Nov 6, 2023
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…tion mode (#1809) Since #1538, when using `gazelle:python_generation_mode project`, a `py_test` rule is created even when there are no test files in the project. fb673ee (first commit on the PR branch) reproduces this issue - it shows that a `py_test` rule is created even when there is no test entrypoint file (`__test__.py`) nor any test file in the entire project. Additionally, test rules created on `project` or `package` generation mode will always set `main = "__test__.py"`, even when that file doesn't exist. This PR fixes it by only generating a `py_test` rule if it can find some test file - either an explicit `__test__.py`, or any other file prefixed with `test_` or suffixed with `_test.py`. It also changes the generated test rule to only add `main = "__test__.py"` if there is an actual `__test__.py` file. Note that, in the case where a `__test__.py` file doesn't exist, the generated `py_test` rule is likely invalid as-is due to the lack of `main`; this can be fixed by mapping to some other `py_test` implementation, and I believe the new behavior makes more sense than pointing `main` to a non-existing file. It may be useful to review per-commit (all tests pass on each commit): - First commit reproduces the issue; - Second commit fixes the issue and the corresponding tests; - Third commit adds additional test cases.
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With a recent change to generate a single test target per python file
we introduced a regression for projects using
# gazelle:python_generation_mode projectconfiguration directiveif there are multiple files with the same filenames but under different
directories within the source tree. This PR fixes the behaviour so that
we just generate a single target containing all test files as there is
no sure way to denormalize the paths so that they never clash.
Fixes #1442.