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vllm-omni/tools/pre_commit/check_test_marks.py
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Python

#!/usr/bin/env python3
# SPDX-License-Identifier: Apache-2.0
# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
"""Run a pre-commit hook that fails if test files are modified or added
that (probably) never run in the CI. For now, this means that every tests file
needs to have a CI level marker (e.g., core_model, advanced_model, full_model,
local_model, slow, etc) and hardware mark / helper so that we ensure mutated
tests will actually be selected as long as there are pytest commands pointing
at the right paths.
"""
import os
import re
import sys
# CI level markers
LEVEL_MARKERS = ("core_model", "advanced_model", "full_model", "local_model", "slow")
# Hardware markers. These are platforms and resources that CI filters on.
# NOTE: If new hardware marks are added to pyproject.toml etc, we need
# to add them here as well.
HARDWARE_MARKERS = (
"cpu",
"gpu",
"cuda",
"rocm",
"xpu",
"npu",
"musa",
"H100",
"L4",
"MI325",
"B60",
"S5000",
"A2",
"A3",
)
# Helpers from tests/helpers/mark.py that auto-apply hardware marks.
HARDWARE_HELPERS = ("hardware_test", "hardware_marks")
# Match mark.X since we could also do `from pytest import mark`.
# \b prevents matching prefixes (e.g., mark.slow vs mark.slow_test).
LEVEL_RE = re.compile(r"mark\.(?:" + "|".join(LEVEL_MARKERS) + r")\b")
HARDWARE_RE = re.compile(r"mark\.(?:" + "|".join(HARDWARE_MARKERS) + r")\b")
HELPER_RE = re.compile(r"(?:" + "|".join(HARDWARE_HELPERS) + r")\s*\(")
MISSING_LEVEL_MARKER = "Level"
MISSING_HARDWARE_MARKER = "Hardware"
# Check if a file is located under tests/ and matches test_<something>.py
# or <something>_test.py, since pytest technically collects on both.
# Note that we use the former everywhere in this repo by convention.
TEST_FILE_RE = re.compile(r"^tests/(?:.*/)?(?:test_[^/]*\.py$|[^/]*_test\.py$)")
def is_test_file(path: str) -> bool:
"""Determine whether or not a path is pointing at a test file or not."""
return bool(TEST_FILE_RE.match(path))
def read_test_file(path: str) -> str | None:
"""Read a test file's contents, or return None if it doesn't exist."""
if not os.path.isfile(path):
return None
with open(path, encoding="utf-8") as f:
return f.read()
def has_level_marker(contents: str) -> bool:
"""Check if file contents contain at least one CI level marker."""
return bool(LEVEL_RE.search(contents))
def has_hardware_marker(contents: str) -> bool:
"""Check if file contents contain any hardware marker or helpers."""
return bool(HARDWARE_RE.search(contents) or HELPER_RE.search(contents))
def get_files_missing_markers(
staged_files: list[str],
) -> dict[str, list[str]]:
"""Return a dict mapping file path to list of missing marker types."""
results: dict[str, list[str]] = {}
for path in staged_files:
if is_test_file(path) and (contents := read_test_file(path)) is not None:
missing = []
if not has_level_marker(contents):
missing.append(MISSING_LEVEL_MARKER)
if not has_hardware_marker(contents):
missing.append(MISSING_HARDWARE_MARKER)
if missing:
results[path] = missing
return results
if __name__ == "__main__":
missing = get_files_missing_markers(sys.argv[1:])
if missing:
file_lines = "\n".join(f" - {path} [{' and '.join(problems)}]" for path, problems in missing.items())
print(
"\033[91merror:\033[0m test files are missing pytest marks "
"required for Buildkite CI collection.\n\n"
f"Level marks, e.g.: {', '.join(LEVEL_MARKERS[:4])}\n"
f"Hardware marks, e.g.: {', '.join(HARDWARE_MARKERS[:4])}, ...\n"
f" or helpers: {', '.join(HARDWARE_HELPERS)}\n\n"
"The following files are missing marks:\n"
f"{file_lines}\n\n"
"To skip: SKIP=check-test-ci-coverage git commit ..."
)
sys.exit(1)