File: run_telemetry_as_googletest.py

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#!/usr/bin/env vpython3
# Copyright 2015 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Runs isolate bundled Telemetry unittests.

If optional argument --isolated-script-test-output=[FILENAME] is passed
to the script, json is written to that file in the format detailed in
//docs/testing/json-test-results-format.md.

If optional argument --isolated-script-test-filter=[TEST_NAMES] is passed to
the script, it should be a  double-colon-separated ("::") list of test names,
to run just that subset of tests.

This script is intended to be the base command invoked by the isolate,
followed by a subsequent Python script. It could be generalized to
invoke an arbitrary executable.
"""

import json
import sys

import common


class TelemetryUnittestAdapter(common.BaseIsolatedScriptArgsAdapter):

  # Overriding parent implementation.
  # pylint: disable=no-self-use
  def generate_test_output_args(self, output):
    return ['--write-full-results-to', output]
  # pylint: enable=no-self-use

  # Overriding parent implementation.
  # pylint: disable=no-self-use
  def generate_test_also_run_disabled_tests_args(self):
    return ['--also-run-disabled-tests']
  # pylint: enable=no-self-use

  # Overriding parent implementation.
  # pylint: disable=no-self-use
  def generate_test_filter_args(self, test_filter_str):
    return ['--test-filter', test_filter_str]
  # pylint: enable=no-self-use

  # Overriding parent implementation.
  # pylint: disable=no-self-use
  def generate_sharding_args(self, total_shards, shard_index):
    return [
        '--total-shards=%d' % total_shards,
        '--shard-index=%d' % shard_index
    ]
  # pylint: enable=no-self-use

  # Overriding parent implementation.
  # pylint: disable=no-self-use
  def generate_test_launcher_retry_limit_args(self, retry_limit):
    return ['--retry-limit=%d' % retry_limit]
  # pylint: enable=no-self-use

  # Overriding parent implementation.
  # pylint: disable=no-self-use
  def generate_test_repeat_args(self, repeat_count):
    return ['--repeat=%d' % repeat_count]
  # pylint: enable=no-self-use


def main():
  adapter = TelemetryUnittestAdapter()
  return adapter.run_test()


# This is not really a "script test" so does not need to manually add
# any additional compile targets.
def main_compile_targets(args):
  json.dump([], args.output)


if __name__ == '__main__':
  # Conform minimally to the protocol defined by ScriptTest.
  if 'compile_targets' in sys.argv:
    funcs = {
        'run': None,
        'compile_targets': main_compile_targets,
    }
    sys.exit(common.run_script(sys.argv[1:], funcs))
  sys.exit(main())