gh-149640: Add new GitHub action to test lazy_imports=all against test suite
#2
Workflow file for this run
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| name: Tests | |
| # Run the CPython test suite with global lazy imports forced on | |
| # (``PYTHON_LAZY_IMPORTS=all``, equivalent to ``-X lazy_imports=all``). | |
| # | |
| # Modules that are known to fail under lazy imports are listed in | |
| # Lib/test/lazy_imports_all_exclude.txt and skipped here. Remove entries from | |
| # that file as the modules are fixed so this workflow starts guarding them | |
| # against regressions. | |
| on: | |
| workflow_dispatch: | |
| push: | |
| branches: &branches | |
| - 'main' | |
| - '3.*' | |
| paths-ignore: &paths-ignore | |
| - 'Doc/**' | |
| - 'Misc/**' | |
| - '**/*.md' | |
| - '**/*.rst' | |
| pull_request: | |
| branches: *branches | |
| paths-ignore: *paths-ignore | |
| permissions: | |
| contents: read | |
| concurrency: | |
| group: ${{ github.workflow }}-${{ github.actor }}-${{ github.head_ref || github.run_id }} | |
| cancel-in-progress: true | |
| env: | |
| FORCE_COLOR: 1 | |
| jobs: | |
| lazy-imports: | |
| name: Lazy imports all enabled | |
| runs-on: ubuntu-24.04 | |
| timeout-minutes: 60 | |
| env: | |
| PYTHON_LAZY_IMPORTS: all | |
| EXCLUDE_FILE: Lib/test/lazy_imports_all_exclude.txt | |
| steps: | |
| - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2 | |
| with: | |
| persist-credentials: false | |
| - name: Register gcc problem matcher | |
| run: echo "::add-matcher::.github/problem-matchers/gcc.json" | |
| - name: Install dependencies | |
| run: sudo ./.github/workflows/posix-deps-apt.sh | |
| - name: Configure CPython | |
| run: ./configure --config-cache --with-pydebug | |
| - name: Build CPython | |
| run: make -j4 | |
| - name: Display build info | |
| run: make pythoninfo | |
| - name: Verify lazy imports are fullly enabled | |
| run: ./python -c "import sys; assert sys.flags.lazy_imports == 1, sys.flags.lazy_imports; print('lazy imports all enabled')" | |
| - name: Build test list (all tests minus the known-failing exclusions) | |
| run: | | |
| set -euo pipefail | |
| ./python -m test --list-tests > all_tests.txt | |
| # Strip comments/blank lines from the exclusion file, then drop those | |
| # exact test names (whole-line, fixed-string match) from the run list. | |
| grep -vE '^\s*(#.*)?$' "$EXCLUDE_FILE" > exclude_tests.txt | |
| grep -vxF -f exclude_tests.txt all_tests.txt > run_tests.txt | |
| # Fail loudly if any exclusion entry matched nothing: a stale or | |
| # mistyped name (or a change in `--list-tests` output) would otherwise | |
| # silently stop excluding a module and let it fail the run. | |
| stale=$(comm -23 <(sort -u exclude_tests.txt) <(sort -u all_tests.txt)) | |
| if [ -n "$stale" ]; then | |
| echo "::error::Stale entries in $EXCLUDE_FILE (no longer match 'python -m test --list-tests'); remove or fix them:" | |
| echo "$stale" | |
| exit 1 | |
| fi | |
| echo "Excluding $(wc -l < exclude_tests.txt) module(s); running $(wc -l < run_tests.txt) of $(wc -l < all_tests.txt)." | |
| - name: Run stdlib tests with lazy imports | |
| run: xvfb-run xargs ./python -m test --fast-ci --timeout=900 < run_tests.txt |