tools/perf/web_tests_cuj.py

#!/usr/bin/env vpython3
# Copyright 2026 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import os
import pathlib
import subprocess
import sys


CHROMIUM_SRC_DIR = pathlib.Path(__file__).absolute().parents[2]
THIRD_PARTY_DIR = CHROMIUM_SRC_DIR / 'third_party'
CROSSBENCH_DIR = THIRD_PARTY_DIR / 'crossbench'
CUJ_RUNNER = (
  THIRD_PARTY_DIR / 'crossbench-web-tests/cuj/crossbench/runner/run.py'
)


def main():
  # Set PYTHONPATH so that the CUJ runner can find crossbench.
  env = os.environ.copy()
  env['PYTHONPATH'] = CROSSBENCH_DIR

  # TODO(b:435031130): For initial testing, only run the default
  # variant of speedometer 3.1.
  command_line = [
    CUJ_RUNNER,
    '--platform=adb',
    '--tests=speedometer_3.1',
    '--variants=$',
  ]

  # Pipe any input arguments passed to this script to the command_line list.
  if len(sys.argv) > 1:
    command_line.extend(sys.argv[1:])

  proc = subprocess.run(command_line, check=False, env=env)
  status = proc.returncode

  # TODO(b:435031130): While this feature is still in development, we just log
  # the status code and then always return success. We will return the real
  # status code only after the code has been verified to be reliable.
  print('Web-tests CUJ runner returned status', status)
  return 0


if __name__ == '__main__':
  sys.exit(main())