scripts/run_tint_benchmark_test.py

#!/usr/bin/env python3
# Copyright 2025 The Dawn & Tint Authors
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"""Runs the Tint benchmark to check that it works.

This script is necessary in order to support running the Tint benchmark on Swarming, but it
is effectively a thin wrapper around the underlying tint_benchmark binary.
"""

import argparse
import json
import os
import subprocess


def run_benchmark() -> subprocess.CompletedProcess:
    cmd = [
        os.path.join(os.getcwd(), 'tint_benchmark'),
        '--benchmark_dry_run',
    ]
    return subprocess.run(cmd, check=False)


def generate_results_for_resultdb_ingestion(success: bool,
                                            output_file: str) -> None:
    # This is a very crude pass/fail result since we just want to know if the
    # benchmark is able to run without crashing.
    generated_test_results = {
        'failures': [],
        'valid': True,
    }
    if not success:
        generated_test_results['failures'].append('tint_benchmark')

    with open(output_file, 'w', encoding='utf-8') as outfile:
        json.dump(generated_test_results, outfile)


def main() -> None:
    parser = argparse.ArgumentParser(description='Runs the Tint benchmark')

    parser.add_argument('--isolated-script-test-output',
                        help='Path to the location to output JSON results.')
    parser.add_argument('--isolated-script-test-perf-output',
                        help='Currently unused, needed for bot support.')
    parser.add_argument('--isolated-script-test-launcher-retry-limit',
                        help='Currently unused, needed for bot support.')
    parser.add_argument('--isolated-script-test-repeat',
                        help='Currently unused, needed for bot support.')
    parser.add_argument('--isolated-script-test-filter',
                        help='Currently unused, needed for bot support.')
    args = parser.parse_args()

    proc = run_benchmark()
    if args.isolated_script_test_output:
        generate_results_for_resultdb_ingestion(
            not proc.returncode, args.isolated_script_test_output)
    proc.check_returncode()


if __name__ == '__main__':
    main()