small looping test runner to help find flaky tests on Android

testrunner.py

import subprocess
import shlex
import shutil


def run():
    times_run = 1
    failures = 0

    while True:
        print('# run: {}, failures: {}'.format(times_run, failures))

        try:
            subprocess.check_call(shlex.split('./gradlew --quiet connectedAndroidTest'))
        except subprocess.CalledProcessError as e:
            failures += 1

            output_dir = 'tmp/{}'.format(times_run)
            shutil.copytree('<<insert app here>>/build/reports/androidTests/connected', output_dir)

        times_run += 1


if __name__ == '__main__':
    run()