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84 lines
3.0 KiB
Python
84 lines
3.0 KiB
Python
"""Unit tests for script/clang_tidy_hash.py module."""
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from pathlib import Path
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import sys
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import pytest
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# Add the script directory to Python path so we can import clang_tidy_hash
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sys.path.insert(0, str(Path(__file__).parent.parent.parent / "script"))
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import clang_tidy_hash # noqa: E402
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from clang_tidy_hash import CLANG_TIDY_GLOBAL_FILES # noqa: E402
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def _populate(repo_root: Path) -> None:
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"""Create every clang-tidy global file plus a base sdkconfig.defaults."""
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for name in CLANG_TIDY_GLOBAL_FILES:
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path = repo_root / name
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path.parent.mkdir(parents=True, exist_ok=True)
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path.write_text(f"contents of {name}\n")
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(repo_root / "sdkconfig.defaults").write_text("CONFIG_BASE=y\n")
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def test_calculate_clang_tidy_hash_is_deterministic(tmp_path: Path) -> None:
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"""Same inputs must produce the same hash."""
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_populate(tmp_path)
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assert clang_tidy_hash.calculate_clang_tidy_hash(
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repo_root=tmp_path
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) == clang_tidy_hash.calculate_clang_tidy_hash(repo_root=tmp_path)
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@pytest.mark.parametrize("filename", CLANG_TIDY_GLOBAL_FILES)
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def test_calculate_clang_tidy_hash_changes_with_each_global_file(
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tmp_path: Path, filename: str
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) -> None:
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"""Editing any global file must change the hash."""
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_populate(tmp_path)
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before = clang_tidy_hash.calculate_clang_tidy_hash(repo_root=tmp_path)
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(tmp_path / filename).write_text("changed\n")
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after = clang_tidy_hash.calculate_clang_tidy_hash(repo_root=tmp_path)
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assert after != before
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def test_calculate_clang_tidy_hash_includes_per_target_sdkconfig(
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tmp_path: Path,
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) -> None:
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"""Per-target sdkconfig.defaults.<target> files must be part of the hash."""
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_populate(tmp_path)
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before = clang_tidy_hash.calculate_clang_tidy_hash(repo_root=tmp_path)
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# Adding a per-target file must change the hash.
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per_target = tmp_path / "sdkconfig.defaults.esp32c6"
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per_target.write_bytes(b"CONFIG_OPENTHREAD_ENABLED=y\n")
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after_add = clang_tidy_hash.calculate_clang_tidy_hash(repo_root=tmp_path)
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assert after_add != before
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# Editing the per-target file must change the hash again.
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per_target.write_bytes(b"CONFIG_OPENTHREAD_ENABLED=n\n")
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after_edit = clang_tidy_hash.calculate_clang_tidy_hash(repo_root=tmp_path)
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assert after_edit != after_add
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def test_calculate_clang_tidy_hash_handles_missing_optional_files(
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tmp_path: Path,
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) -> None:
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"""Hash calculation must not fail when files are absent."""
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# Only .clang-tidy present; everything else missing.
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(tmp_path / ".clang-tidy").write_text("Checks: '-*'\n")
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result = clang_tidy_hash.calculate_clang_tidy_hash(repo_root=tmp_path)
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assert len(result) == 64 # sha256 hexdigest length
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def test_read_file_bytes(tmp_path: Path) -> None:
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"""Test read_file_bytes helper function."""
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test_file = tmp_path / "test.bin"
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test_content = b"binary content\x00\xff"
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test_file.write_bytes(test_content)
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result = clang_tidy_hash.read_file_bytes(test_file)
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assert result == test_content
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