Pytest: fix the build-as-test mode on Windows
#20641
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Pull Request Overview
This PR fixes the experimental build-as-test mode for pytest on Windows systems by addressing an issue where native_test couldn't properly wrap a py_binary target due to .exe suffix mismatches on Windows.
Key changes:
- Replaces
native_testwithpy_testfor the test wrapper - Refactors common installer arguments into a shared dictionary to avoid duplication
This mode (enabled with `--codeql=build-as-test` or setting `PYTEST_CODEQL=build-as-test` in the environment) is an experimental mode that makes the pytest dist installation run as a test. This allows to avoid running the installation in case nothing changed in the dist, leveraging bazel's test caching mechanism, and accelrating the dev loop when working on integration test code. This mode might become the default for devs in the future. Up until now, this mode was only working on POSIX systems. This commit fixes it on Windows. The issue was `native_test` being unable to wrap a `py_binary` target because of an `.exe` suffix mismatch. Turning the `native_test` into a full-fledged `py_test` solves the issue.
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esbena
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Oct 27, 2025
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This mode (enabled with
--codeql=build-as-testor settingPYTEST_CODEQL=build-as-testin the environment) is an experimental mode that makes the pytest dist installation run as a test. This allows to avoid running the installation in case nothing changed in the dist, leveraging bazel's test caching mechanism, and accelrating the dev loop when working on integration test code. This mode might become the default for devs in the future.Up until now, this mode was only working on POSIX systems. This commit fixes it on Windows. The issue was
native_testbeing unable to wrap apy_binarytarget because of an.exesuffix mismatch. Turning thenative_testinto a full-fledgedpy_testsolves the issue.