build/android/pylib/local/machine/local_machine_junit_test_run_test.py

#!/usr/bin/env vpython3
# Copyright 2020 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# pylint: disable=protected-access


import os
import unittest

from pylib.local.machine import local_machine_junit_test_run
from py_utils import tempfile_ext
from mock import patch  # pylint: disable=import-error


class LocalMachineJunitTestRunTests(unittest.TestCase):
  def testAddPropertiesJar(self):
    with tempfile_ext.NamedTemporaryDirectory() as temp_dir:
      apk = 'resource_apk'
      cmd_list = []
      local_machine_junit_test_run.AddPropertiesJar(cmd_list, temp_dir, apk)
      self.assertEqual(cmd_list, [])
      cmd_list = [['test1']]
      local_machine_junit_test_run.AddPropertiesJar(cmd_list, temp_dir, apk)
      self.assertEqual(
          cmd_list[0],
          ['test1', '--classpath',
           os.path.join(temp_dir, 'properties.jar')])
      cmd_list = [['test1'], ['test2']]
      local_machine_junit_test_run.AddPropertiesJar(cmd_list, temp_dir, apk)
      self.assertEqual(len(cmd_list[0]), 3)
      self.assertEqual(
          cmd_list[1],
          ['test2', '--classpath',
           os.path.join(temp_dir, 'properties.jar')])

  @patch('multiprocessing.cpu_count')
  def testChooseNumOfShards(self, mock_cpu_count):
    mock_cpu_count.return_value = 36
    # Test shards is 1 when filter is set.
    test_shards = 1
    test_classes = [1] * 50
    shards = local_machine_junit_test_run.ChooseNumOfShards(
        test_classes, test_shards)
    self.assertEqual(1, shards)

    # Tests setting shards.
    test_shards = 4
    shards = local_machine_junit_test_run.ChooseNumOfShards(
        test_classes, test_shards)
    self.assertEqual(4, shards)

    # Tests using min_class per shards.
    test_classes = [1] * 20
    test_shards = 8
    shards = local_machine_junit_test_run.ChooseNumOfShards(
        test_classes, test_shards)
    self.assertEqual(2, shards)

  def testGroupTestsForShard(self):
    test_classes = []
    results = local_machine_junit_test_run.GroupTestsForShard(1, test_classes)
    self.assertDictEqual(results, {0: []})

    test_classes = ['dir/test.class'] * 5
    results = local_machine_junit_test_run.GroupTestsForShard(1, test_classes)
    self.assertDictEqual(results, {0: ['dir.test*'] * 5})

    test_classes = ['dir/test.class'] * 5
    results = local_machine_junit_test_run.GroupTestsForShard(2, test_classes)
    ans_dict = {
        0: ['dir.test*'] * 3,
        1: ['dir.test*'] * 2,
    }
    self.assertDictEqual(results, ans_dict)

    test_classes = ['a10 warthog', 'b17', 'SR71']
    results = local_machine_junit_test_run.GroupTestsForShard(3, test_classes)
    ans_dict = {
        0: ['a10 warthog'],
        1: ['b17'],
        2: ['SR71'],
    }
    self.assertDictEqual(results, ans_dict)


if __name__ == '__main__':
  unittest.main()