Patch pre-commit also when called due to a git commit (#18)

src/pre_commit_uv/__init__.py

@@ -16,7 +16,11 @@ def _patch() -> None:
     calling_pre_commit = "FORCE_PRE_COMMIT_UV_PATCH" in os.environ
     if not calling_pre_commit and sys.argv and sys.argv[0]:  # must have arguments
         calling = sys.argv[1] if sys.argv[0] == sys.executable and len(sys.argv) >= 1 else sys.argv[0]
-        if os.path.split(calling)[1] == f"pre-commit{'.exe' if sys.platform == 'win32' else ''}":
+        if (
+            os.path.split(calling)[1] == f"pre-commit{'.exe' if sys.platform == 'win32' else ''}"
+            # case when pre-commit is called due to a git commit
+            or ("-m" in sys.argv and "hook-impl" in sys.argv)
+        ):
             calling_pre_commit = True
 
     if calling_pre_commit and os.environ.get("DISABLE_PRE_COMMIT_UV_PATCH") is None:

tests/test_main.py

@@ -1,36 +1,64 @@
 from __future__ import annotations
 
 from importlib.metadata import version
-from subprocess import check_call
+from subprocess import check_call, check_output
 from textwrap import dedent
 from typing import TYPE_CHECKING
 
+import pytest
 from pre_commit import main
 
 if TYPE_CHECKING:
     from pathlib import Path
 
-    import pytest
+precommit_file = ".pre-commit-config.yaml"
+uv = version("uv")
+self = version("pre-commit-uv")
 
 
-def test_install(tmp_path: Path, caplog: pytest.LogCaptureFixture, monkeypatch: pytest.MonkeyPatch) -> None:
+@pytest.fixture
+def git_repo(tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> Path:
     conf = """
     repos:
       - repo: https://github.com/tox-dev/pyproject-fmt
         rev: "2.2.0"
         hooks:
           - id: pyproject-fmt
     """
-    conf_file = tmp_path / ".pre-commit-config.yaml"
+    conf_file = tmp_path / precommit_file
     conf_file.write_text(dedent(conf))
     monkeypatch.setenv("PRE_COMMIT_HOME", str(tmp_path / "store"))
     monkeypatch.chdir(tmp_path)
     check_call(["git", "init"])
+    return tmp_path
 
-    main.main(["install-hooks", "-c", str(conf_file)])
 
-    uv = version("uv")
-    self = version("pre-commit-uv")
+@pytest.fixture
+def install_hook(git_repo: Path) -> None:
+    check_call(["pre-commit", "install", "--install-hooks", "-c", str(git_repo / precommit_file)])
+    check_call(["pre-commit", "clean"])  # ensures that 'install_environment' gets called
+
+
+@pytest.mark.usefixtures("install_hook")
+def test_run_precommit_hook() -> None:
+    hook_result = check_output([".git/hooks/pre-commit"], encoding="utf-8")
+    assert f"[INFO] Using pre-commit with uv {uv} via pre-commit-uv {self}" in hook_result.splitlines()
+
+
+@pytest.mark.usefixtures("install_hook")
+def test_call_as_module() -> None:
+    run_result = check_output(["python3", "-m", "pre_commit", "run", "-a", "--color", "never"], encoding="utf-8")
+    assert f"[INFO] Using pre-commit with uv {uv} via pre-commit-uv {self}" not in run_result.splitlines()
+
+
+def test_install(git_repo: Path, caplog: pytest.LogCaptureFixture, monkeypatch: pytest.MonkeyPatch) -> None:
+    monkeypatch.setenv("FORCE_PRE_COMMIT_UV_PATCH", "1")
+
+    import pre_commit_uv  # noqa: PLC0415
+
+    pre_commit_uv._patch()  # noqa: SLF001
+    main.main(["install-hooks", "-c", str(git_repo / precommit_file)])
+
     assert caplog.messages == [
         "Initializing environment for https://github.com/tox-dev/pyproject-fmt.",
         "Installing environment for https://github.com/tox-dev/pyproject-fmt.",

tox.ini

@@ -24,7 +24,6 @@ pass_env =
     PYTEST_*
 set_env =
     COVERAGE_FILE = {work_dir}/.coverage.{env_name}
-    FORCE_PRE_COMMIT_UV_PATCH = true
 commands =
     python -m pytest {tty:--color=yes} {posargs: \
       --cov {env_site_packages_dir}{/}pre_commit_uv --cov {tox_root}{/}tests \