Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 728 insertions, 0 deletions

diff --git a/third_party/libwebrtc/tools_webrtc/mb/mb_unittest.py b/third_party/libwebrtc/tools_webrtc/mb/mb_unittest.py
new file mode 100755
index 0000000000..583fefd87e
--- /dev/null
+++ b/third_party/libwebrtc/tools_webrtc/mb/mb_unittest.py
@@ -0,0 +1,728 @@
+#!/usr/bin/env vpython3
+
+# Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
+#
+# Use of this source code is governed by a BSD-style license
+# that can be found in the LICENSE file in the root of the source
+# tree. An additional intellectual property rights grant can be found
+# in the file PATENTS.  All contributing project authors may
+# be found in the AUTHORS file in the root of the source tree.
+
+"""Tests for mb.py."""
+
+import ast
+import os
+import re
+import sys
+import tempfile
+import unittest
+
+_SCRIPT_DIR = os.path.dirname(os.path.realpath(__file__))
+_SRC_DIR = os.path.dirname(os.path.dirname(_SCRIPT_DIR))
+sys.path.insert(0, _SRC_DIR)
+
+from tools_webrtc.mb import mb
+
+
+class FakeMBW(mb.WebRTCMetaBuildWrapper):
+  def __init__(self, win32=False):
+    super().__init__()
+
+    # Override vars for test portability.
+    if win32:
+      self.chromium_src_dir = 'c:\\fake_src'
+      self.default_config = 'c:\\fake_src\\tools_webrtc\\mb\\mb_config.pyl'
+      self.default_isolate_map = ('c:\\fake_src\\testing\\buildbot\\'
+                                  'gn_isolate_map.pyl')
+      self.platform = 'win32'
+      self.executable = 'c:\\python\\vpython3.exe'
+      self.sep = '\\'
+      self.cwd = 'c:\\fake_src\\out\\Default'
+    else:
+      self.chromium_src_dir = '/fake_src'
+      self.default_config = '/fake_src/tools_webrtc/mb/mb_config.pyl'
+      self.default_isolate_map = '/fake_src/testing/buildbot/gn_isolate_map.pyl'
+      self.executable = '/usr/bin/vpython3'
+      self.platform = 'linux2'
+      self.sep = '/'
+      self.cwd = '/fake_src/out/Default'
+
+    self.files = {}
+    self.dirs = set()
+    self.calls = []
+    self.cmds = []
+    self.cross_compile = None
+    self.out = ''
+    self.err = ''
+    self.rmdirs = []
+
+  def ExpandUser(self, path):
+    # pylint: disable=no-self-use
+    return '$HOME/%s' % path
+
+  def Exists(self, path):
+    abs_path = self._AbsPath(path)
+    return self.files.get(abs_path) is not None or abs_path in self.dirs
+
+  def ListDir(self, path):
+    dir_contents = []
+    for f in list(self.files.keys()) + list(self.dirs):
+      head, _ = os.path.split(f)
+      if head == path:
+        dir_contents.append(f)
+    return dir_contents
+
+  def MaybeMakeDirectory(self, path):
+    abpath = self._AbsPath(path)
+    self.dirs.add(abpath)
+
+  def PathJoin(self, *comps):
+    return self.sep.join(comps)
+
+  def ReadFile(self, path):
+    try:
+      return self.files[self._AbsPath(path)]
+    except KeyError as e:
+      raise IOError('%s not found' % path) from e
+
+  def WriteFile(self, path, contents, force_verbose=False):
+    if self.args.dryrun or self.args.verbose or force_verbose:
+      self.Print('\nWriting """\\\n%s""" to %s.\n' % (contents, path))
+    abpath = self._AbsPath(path)
+    self.files[abpath] = contents
+
+  def Call(self, cmd, env=None, capture_output=True, input=None):
+    # pylint: disable=redefined-builtin
+    del env
+    del capture_output
+    del input
+    self.calls.append(cmd)
+    if self.cmds:
+      return self.cmds.pop(0)
+    return 0, '', ''
+
+  def Print(self, *args, **kwargs):
+    sep = kwargs.get('sep', ' ')
+    end = kwargs.get('end', '\n')
+    f = kwargs.get('file', sys.stdout)
+    if f == sys.stderr:
+      self.err += sep.join(args) + end
+    else:
+      self.out += sep.join(args) + end
+
+  def TempDir(self):
+    tmp_dir = os.path.join(tempfile.gettempdir(), 'mb_test')
+    self.dirs.add(tmp_dir)
+    return tmp_dir
+
+  def TempFile(self, mode='w'):
+    del mode
+    return FakeFile(self.files)
+
+  def RemoveFile(self, path):
+    abpath = self._AbsPath(path)
+    self.files[abpath] = None
+
+  def RemoveDirectory(self, abs_path):
+    # Normalize the passed-in path to handle different working directories
+    # used during unit testing.
+    abs_path = self._AbsPath(abs_path)
+    self.rmdirs.append(abs_path)
+    files_to_delete = [f for f in self.files if f.startswith(abs_path)]
+    for f in files_to_delete:
+      self.files[f] = None
+
+  def _AbsPath(self, path):
+    if not ((self.platform == 'win32' and path.startswith('c:')) or
+            (self.platform != 'win32' and path.startswith('/'))):
+      path = self.PathJoin(self.cwd, path)
+    if self.sep == '\\':
+      return re.sub(r'\\+', r'\\', path)
+    return re.sub('/+', '/', path)
+
+
+class FakeFile:
+  # pylint: disable=invalid-name
+  def __init__(self, files):
+    self.name = '/tmp/file'
+    self.buf = ''
+    self.files = files
+
+  def write(self, contents):
+    self.buf += contents
+
+  def close(self):
+    self.files[self.name] = self.buf
+
+
+TEST_CONFIG = """\
+{
+  'builder_groups': {
+    'chromium': {},
+    'fake_group': {
+      'fake_builder': 'rel_bot',
+      'fake_debug_builder': 'debug_goma',
+      'fake_args_bot': 'fake_args_bot',
+      'fake_multi_phase': { 'phase_1': 'phase_1', 'phase_2': 'phase_2'},
+      'fake_android_bot': 'android_bot',
+      'fake_args_file': 'args_file_goma',
+      'fake_ios_error': 'ios_error',
+    },
+  },
+  'configs': {
+    'args_file_goma': ['fake_args_bot', 'goma'],
+    'fake_args_bot': ['fake_args_bot'],
+    'rel_bot': ['rel', 'goma', 'fake_feature1'],
+    'debug_goma': ['debug', 'goma'],
+    'phase_1': ['rel', 'phase_1'],
+    'phase_2': ['rel', 'phase_2'],
+    'android_bot': ['android'],
+    'ios_error': ['error'],
+  },
+  'mixins': {
+    'error': {
+      'gn_args': 'error',
+    },
+    'fake_args_bot': {
+      'args_file': '//build/args/bots/fake_group/fake_args_bot.gn',
+    },
+    'fake_feature1': {
+      'gn_args': 'enable_doom_melon=true',
+    },
+    'goma': {
+      'gn_args': 'use_goma=true',
+    },
+    'phase_1': {
+      'gn_args': 'phase=1',
+    },
+    'phase_2': {
+      'gn_args': 'phase=2',
+    },
+    'rel': {
+      'gn_args': 'is_debug=false dcheck_always_on=false',
+    },
+    'debug': {
+      'gn_args': 'is_debug=true',
+    },
+    'android': {
+      'gn_args': 'target_os="android" dcheck_always_on=false',
+    }
+  },
+}
+"""
+
+
+def CreateFakeMBW(files=None, win32=False):
+  mbw = FakeMBW(win32=win32)
+  mbw.files.setdefault(mbw.default_config, TEST_CONFIG)
+  mbw.files.setdefault(
+      mbw.ToAbsPath('//testing/buildbot/gn_isolate_map.pyl'), '''{
+      "foo_unittests": {
+        "label": "//foo:foo_unittests",
+        "type": "console_test_launcher",
+        "args": [],
+      },
+    }''')
+  mbw.files.setdefault(
+      mbw.ToAbsPath('//build/args/bots/fake_group/fake_args_bot.gn'),
+      'is_debug = false\ndcheck_always_on=false\n')
+  mbw.files.setdefault(mbw.ToAbsPath('//tools/mb/rts_banned_suites.json'), '{}')
+  if files:
+    for path, contents in list(files.items()):
+      mbw.files[path] = contents
+      if path.endswith('.runtime_deps'):
+
+        def FakeCall(cmd, env=None, capture_output=True, stdin=None):
+          # pylint: disable=cell-var-from-loop
+          del cmd
+          del env
+          del capture_output
+          del stdin
+          mbw.files[path] = contents
+          return 0, '', ''
+
+        # pylint: disable=invalid-name
+        mbw.Call = FakeCall
+  return mbw
+
+
+class UnitTest(unittest.TestCase):
+  # pylint: disable=invalid-name
+  def check(self,
+            args,
+            mbw=None,
+            files=None,
+            out=None,
+            err=None,
+            ret=None,
+            env=None):
+    if not mbw:
+      mbw = CreateFakeMBW(files)
+
+    try:
+      prev_env = os.environ.copy()
+      os.environ = env if env else prev_env
+      actual_ret = mbw.Main(args)
+    finally:
+      os.environ = prev_env
+    self.assertEqual(
+        actual_ret, ret,
+        "ret: %s, out: %s, err: %s" % (actual_ret, mbw.out, mbw.err))
+    if out is not None:
+      self.assertEqual(mbw.out, out)
+    if err is not None:
+      self.assertEqual(mbw.err, err)
+    return mbw
+
+  def test_gen_swarming(self):
+    files = {
+        '/tmp/swarming_targets':
+        'foo_unittests\n',
+        '/fake_src/testing/buildbot/gn_isolate_map.pyl':
+        ("{'foo_unittests': {"
+         "  'label': '//foo:foo_unittests',"
+         "  'type': 'raw',"
+         "  'args': [],"
+         "}}\n"),
+        '/fake_src/out/Default/foo_unittests.runtime_deps': ("foo_unittests\n"),
+    }
+    mbw = CreateFakeMBW(files)
+    self.check([
+        'gen', '-c', 'debug_goma', '--swarming-targets-file',
+        '/tmp/swarming_targets', '//out/Default'
+    ],
+               mbw=mbw,
+               ret=0)
+    self.assertIn('/fake_src/out/Default/foo_unittests.isolate', mbw.files)
+    self.assertIn('/fake_src/out/Default/foo_unittests.isolated.gen.json',
+                  mbw.files)
+
+  def test_gen_swarming_android(self):
+    test_files = {
+        '/tmp/swarming_targets':
+        'foo_unittests\n',
+        '/fake_src/testing/buildbot/gn_isolate_map.pyl':
+        ("{'foo_unittests': {"
+         "  'label': '//foo:foo_unittests',"
+         "  'type': 'console_test_launcher',"
+         "}}\n"),
+        '/fake_src/out/Default/foo_unittests.runtime_deps': ("foo_unittests\n"),
+    }
+    mbw = self.check([
+        'gen', '-c', 'android_bot', '//out/Default', '--swarming-targets-file',
+        '/tmp/swarming_targets', '--isolate-map-file',
+        '/fake_src/testing/buildbot/gn_isolate_map.pyl'
+    ],
+                     files=test_files,
+                     ret=0)
+
+    isolate_file = mbw.files['/fake_src/out/Default/foo_unittests.isolate']
+    isolate_file_contents = ast.literal_eval(isolate_file)
+    files = isolate_file_contents['variables']['files']
+    command = isolate_file_contents['variables']['command']
+
+    self.assertEqual(
+        files,
+        ['../../.vpython3', '../../testing/test_env.py', 'foo_unittests'])
+    self.assertEqual(command, [
+        'luci-auth',
+        'context',
+        '--',
+        'vpython3',
+        '../../build/android/test_wrapper/logdog_wrapper.py',
+        '--target',
+        'foo_unittests',
+        '--logdog-bin-cmd',
+        '../../.task_template_packages/logdog_butler',
+        '--logcat-output-file',
+        '${ISOLATED_OUTDIR}/logcats',
+        '--store-tombstones',
+    ])
+
+  def test_gen_swarming_android_junit_test(self):
+    test_files = {
+        '/tmp/swarming_targets':
+        'foo_unittests\n',
+        '/fake_src/testing/buildbot/gn_isolate_map.pyl':
+        ("{'foo_unittests': {"
+         "  'label': '//foo:foo_unittests',"
+         "  'type': 'junit_test',"
+         "}}\n"),
+        '/fake_src/out/Default/foo_unittests.runtime_deps': ("foo_unittests\n"),
+    }
+    mbw = self.check([
+        'gen', '-c', 'android_bot', '//out/Default', '--swarming-targets-file',
+        '/tmp/swarming_targets', '--isolate-map-file',
+        '/fake_src/testing/buildbot/gn_isolate_map.pyl'
+    ],
+                     files=test_files,
+                     ret=0)
+
+    isolate_file = mbw.files['/fake_src/out/Default/foo_unittests.isolate']
+    isolate_file_contents = ast.literal_eval(isolate_file)
+    files = isolate_file_contents['variables']['files']
+    command = isolate_file_contents['variables']['command']
+
+    self.assertEqual(
+        files,
+        ['../../.vpython3', '../../testing/test_env.py', 'foo_unittests'])
+    self.assertEqual(command, [
+        'luci-auth',
+        'context',
+        '--',
+        'vpython3',
+        '../../build/android/test_wrapper/logdog_wrapper.py',
+        '--target',
+        'foo_unittests',
+        '--logdog-bin-cmd',
+        '../../.task_template_packages/logdog_butler',
+        '--logcat-output-file',
+        '${ISOLATED_OUTDIR}/logcats',
+        '--store-tombstones',
+    ])
+
+  def test_gen_script(self):
+    test_files = {
+        '/tmp/swarming_targets':
+        'foo_unittests_script\n',
+        '/fake_src/testing/buildbot/gn_isolate_map.pyl':
+        ("{'foo_unittests_script': {"
+         "  'label': '//foo:foo_unittests',"
+         "  'type': 'script',"
+         "  'script': '//foo/foo_unittests_script.py',"
+         "}}\n"),
+        '/fake_src/out/Default/foo_unittests_script.runtime_deps':
+        ("foo_unittests\n"
+         "foo_unittests_script.py\n"),
+    }
+    mbw = self.check([
+        'gen', '-c', 'debug_goma', '//out/Default', '--swarming-targets-file',
+        '/tmp/swarming_targets', '--isolate-map-file',
+        '/fake_src/testing/buildbot/gn_isolate_map.pyl'
+    ],
+                     files=test_files,
+                     ret=0)
+
+    isolate_file = (
+        mbw.files['/fake_src/out/Default/foo_unittests_script.isolate'])
+    isolate_file_contents = ast.literal_eval(isolate_file)
+    files = isolate_file_contents['variables']['files']
+    command = isolate_file_contents['variables']['command']
+
+    self.assertEqual(files, [
+        '../../.vpython3',
+        '../../testing/test_env.py',
+        'foo_unittests',
+        'foo_unittests_script.py',
+    ])
+    self.assertEqual(command, [
+        'vpython3',
+        '../../foo/foo_unittests_script.py',
+    ])
+
+  def test_gen_raw(self):
+    test_files = {
+        '/tmp/swarming_targets':
+        'foo_unittests\n',
+        '/fake_src/testing/buildbot/gn_isolate_map.pyl':
+        ("{'foo_unittests': {"
+         "  'label': '//foo:foo_unittests',"
+         "  'type': 'raw',"
+         "}}\n"),
+        '/fake_src/out/Default/foo_unittests.runtime_deps': ("foo_unittests\n"),
+    }
+    mbw = self.check([
+        'gen', '-c', 'debug_goma', '//out/Default', '--swarming-targets-file',
+        '/tmp/swarming_targets', '--isolate-map-file',
+        '/fake_src/testing/buildbot/gn_isolate_map.pyl'
+    ],
+                     files=test_files,
+                     ret=0)
+
+    isolate_file = mbw.files['/fake_src/out/Default/foo_unittests.isolate']
+    isolate_file_contents = ast.literal_eval(isolate_file)
+    files = isolate_file_contents['variables']['files']
+    command = isolate_file_contents['variables']['command']
+
+    self.assertEqual(files, [
+        '../../.vpython3',
+        '../../testing/test_env.py',
+        'foo_unittests',
+    ])
+    self.assertEqual(command, ['bin/run_foo_unittests'])
+
+  def test_gen_non_parallel_console_test_launcher(self):
+    test_files = {
+        '/tmp/swarming_targets':
+        'foo_unittests\n',
+        '/fake_src/testing/buildbot/gn_isolate_map.pyl':
+        ("{'foo_unittests': {"
+         "  'label': '//foo:foo_unittests',"
+         "  'type': 'non_parallel_console_test_launcher',"
+         "}}\n"),
+        '/fake_src/out/Default/foo_unittests.runtime_deps': ("foo_unittests\n"),
+    }
+    mbw = self.check([
+        'gen', '-c', 'debug_goma', '//out/Default', '--swarming-targets-file',
+        '/tmp/swarming_targets', '--isolate-map-file',
+        '/fake_src/testing/buildbot/gn_isolate_map.pyl'
+    ],
+                     files=test_files,
+                     ret=0)
+
+    isolate_file = mbw.files['/fake_src/out/Default/foo_unittests.isolate']
+    isolate_file_contents = ast.literal_eval(isolate_file)
+    files = isolate_file_contents['variables']['files']
+    command = isolate_file_contents['variables']['command']
+
+    self.assertEqual(files, [
+        '../../.vpython3',
+        '../../testing/test_env.py',
+        '../../third_party/gtest-parallel/gtest-parallel',
+        '../../third_party/gtest-parallel/gtest_parallel.py',
+        '../../tools_webrtc/gtest-parallel-wrapper.py',
+        'foo_unittests',
+    ])
+    self.assertEqual(command, [
+        'vpython3',
+        '../../testing/test_env.py',
+        '../../tools_webrtc/gtest-parallel-wrapper.py',
+        '--output_dir=${ISOLATED_OUTDIR}/test_logs',
+        '--gtest_color=no',
+        '--workers=1',
+        '--retry_failed=3',
+        './foo_unittests',
+        '--asan=0',
+        '--lsan=0',
+        '--msan=0',
+        '--tsan=0',
+    ])
+
+  def test_isolate_windowed_test_launcher_linux(self):
+    test_files = {
+        '/tmp/swarming_targets':
+        'foo_unittests\n',
+        '/fake_src/testing/buildbot/gn_isolate_map.pyl':
+        ("{'foo_unittests': {"
+         "  'label': '//foo:foo_unittests',"
+         "  'type': 'windowed_test_launcher',"
+         "}}\n"),
+        '/fake_src/out/Default/foo_unittests.runtime_deps':
+        ("foo_unittests\n"
+         "some_resource_file\n"),
+    }
+    mbw = self.check([
+        'gen', '-c', 'debug_goma', '//out/Default', '--swarming-targets-file',
+        '/tmp/swarming_targets', '--isolate-map-file',
+        '/fake_src/testing/buildbot/gn_isolate_map.pyl'
+    ],
+                     files=test_files,
+                     ret=0)
+
+    isolate_file = mbw.files['/fake_src/out/Default/foo_unittests.isolate']
+    isolate_file_contents = ast.literal_eval(isolate_file)
+    files = isolate_file_contents['variables']['files']
+    command = isolate_file_contents['variables']['command']
+
+    self.assertEqual(files, [
+        '../../.vpython3',
+        '../../testing/test_env.py',
+        '../../testing/xvfb.py',
+        '../../third_party/gtest-parallel/gtest-parallel',
+        '../../third_party/gtest-parallel/gtest_parallel.py',
+        '../../tools_webrtc/gtest-parallel-wrapper.py',
+        'foo_unittests',
+        'some_resource_file',
+    ])
+    self.assertEqual(command, [
+        'vpython3',
+        '../../testing/xvfb.py',
+        '../../tools_webrtc/gtest-parallel-wrapper.py',
+        '--output_dir=${ISOLATED_OUTDIR}/test_logs',
+        '--gtest_color=no',
+        '--retry_failed=3',
+        './foo_unittests',
+        '--asan=0',
+        '--lsan=0',
+        '--msan=0',
+        '--tsan=0',
+    ])
+
+  def test_gen_windowed_test_launcher_win(self):
+    files = {
+        'c:\\fake_src\\out\\Default\\tmp\\swarming_targets':
+        'unittests\n',
+        'c:\\fake_src\\testing\\buildbot\\gn_isolate_map.pyl':
+        ("{'unittests': {"
+         "  'label': '//somewhere:unittests',"
+         "  'type': 'windowed_test_launcher',"
+         "}}\n"),
+        r'c:\fake_src\out\Default\unittests.exe.runtime_deps':
+        ("unittests.exe\n"
+         "some_dependency\n"),
+    }
+    mbw = CreateFakeMBW(files=files, win32=True)
+    self.check([
+        'gen', '-c', 'debug_goma', '--swarming-targets-file',
+        'c:\\fake_src\\out\\Default\\tmp\\swarming_targets',
+        '--isolate-map-file',
+        'c:\\fake_src\\testing\\buildbot\\gn_isolate_map.pyl', '//out/Default'
+    ],
+               mbw=mbw,
+               ret=0)
+
+    isolate_file = mbw.files['c:\\fake_src\\out\\Default\\unittests.isolate']
+    isolate_file_contents = ast.literal_eval(isolate_file)
+    files = isolate_file_contents['variables']['files']
+    command = isolate_file_contents['variables']['command']
+
+    self.assertEqual(files, [
+        '../../.vpython3',
+        '../../testing/test_env.py',
+        '../../third_party/gtest-parallel/gtest-parallel',
+        '../../third_party/gtest-parallel/gtest_parallel.py',
+        '../../tools_webrtc/gtest-parallel-wrapper.py',
+        'some_dependency',
+        'unittests.exe',
+    ])
+    self.assertEqual(command, [
+        'vpython3',
+        '../../testing/test_env.py',
+        '../../tools_webrtc/gtest-parallel-wrapper.py',
+        '--output_dir=${ISOLATED_OUTDIR}/test_logs',
+        '--gtest_color=no',
+        '--retry_failed=3',
+        r'.\unittests.exe',
+        '--asan=0',
+        '--lsan=0',
+        '--msan=0',
+        '--tsan=0',
+    ])
+
+  def test_gen_console_test_launcher(self):
+    test_files = {
+        '/tmp/swarming_targets':
+        'foo_unittests\n',
+        '/fake_src/testing/buildbot/gn_isolate_map.pyl':
+        ("{'foo_unittests': {"
+         "  'label': '//foo:foo_unittests',"
+         "  'type': 'console_test_launcher',"
+         "}}\n"),
+        '/fake_src/out/Default/foo_unittests.runtime_deps': ("foo_unittests\n"),
+    }
+    mbw = self.check([
+        'gen', '-c', 'debug_goma', '//out/Default', '--swarming-targets-file',
+        '/tmp/swarming_targets', '--isolate-map-file',
+        '/fake_src/testing/buildbot/gn_isolate_map.pyl'
+    ],
+                     files=test_files,
+                     ret=0)
+
+    isolate_file = mbw.files['/fake_src/out/Default/foo_unittests.isolate']
+    isolate_file_contents = ast.literal_eval(isolate_file)
+    files = isolate_file_contents['variables']['files']
+    command = isolate_file_contents['variables']['command']
+
+    self.assertEqual(files, [
+        '../../.vpython3',
+        '../../testing/test_env.py',
+        '../../third_party/gtest-parallel/gtest-parallel',
+        '../../third_party/gtest-parallel/gtest_parallel.py',
+        '../../tools_webrtc/gtest-parallel-wrapper.py',
+        'foo_unittests',
+    ])
+    self.assertEqual(command, [
+        'vpython3',
+        '../../testing/test_env.py',
+        '../../tools_webrtc/gtest-parallel-wrapper.py',
+        '--output_dir=${ISOLATED_OUTDIR}/test_logs',
+        '--gtest_color=no',
+        '--retry_failed=3',
+        './foo_unittests',
+        '--asan=0',
+        '--lsan=0',
+        '--msan=0',
+        '--tsan=0',
+    ])
+
+  def test_isolate_test_launcher_with_webcam(self):
+    test_files = {
+        '/tmp/swarming_targets':
+        'foo_unittests\n',
+        '/fake_src/testing/buildbot/gn_isolate_map.pyl':
+        ("{'foo_unittests': {"
+         "  'label': '//foo:foo_unittests',"
+         "  'type': 'console_test_launcher',"
+         "  'use_webcam': True,"
+         "}}\n"),
+        '/fake_src/out/Default/foo_unittests.runtime_deps':
+        ("foo_unittests\n"
+         "some_resource_file\n"),
+    }
+    mbw = self.check([
+        'gen', '-c', 'debug_goma', '//out/Default', '--swarming-targets-file',
+        '/tmp/swarming_targets', '--isolate-map-file',
+        '/fake_src/testing/buildbot/gn_isolate_map.pyl'
+    ],
+                     files=test_files,
+                     ret=0)
+
+    isolate_file = mbw.files['/fake_src/out/Default/foo_unittests.isolate']
+    isolate_file_contents = ast.literal_eval(isolate_file)
+    files = isolate_file_contents['variables']['files']
+    command = isolate_file_contents['variables']['command']
+
+    self.assertEqual(files, [
+        '../../.vpython3',
+        '../../testing/test_env.py',
+        '../../third_party/gtest-parallel/gtest-parallel',
+        '../../third_party/gtest-parallel/gtest_parallel.py',
+        '../../tools_webrtc/ensure_webcam_is_running.py',
+        '../../tools_webrtc/gtest-parallel-wrapper.py',
+        'foo_unittests',
+        'some_resource_file',
+    ])
+    self.assertEqual(command, [
+        'vpython3',
+        '../../tools_webrtc/ensure_webcam_is_running.py',
+        'vpython3',
+        '../../testing/test_env.py',
+        '../../tools_webrtc/gtest-parallel-wrapper.py',
+        '--output_dir=${ISOLATED_OUTDIR}/test_logs',
+        '--gtest_color=no',
+        '--retry_failed=3',
+        './foo_unittests',
+        '--asan=0',
+        '--lsan=0',
+        '--msan=0',
+        '--tsan=0',
+    ])
+
+  def test_isolate(self):
+    files = {
+        '/fake_src/out/Default/toolchain.ninja':
+        "",
+        '/fake_src/testing/buildbot/gn_isolate_map.pyl':
+        ("{'foo_unittests': {"
+         "  'label': '//foo:foo_unittests',"
+         "  'type': 'non_parallel_console_test_launcher',"
+         "}}\n"),
+        '/fake_src/out/Default/foo_unittests.runtime_deps': ("foo_unittests\n"),
+    }
+    self.check(
+        ['isolate', '-c', 'debug_goma', '//out/Default', 'foo_unittests'],
+        files=files,
+        ret=0)
+
+    # test running isolate on an existing build_dir
+    files['/fake_src/out/Default/args.gn'] = 'is_debug = true\n'
+    self.check(['isolate', '//out/Default', 'foo_unittests'],
+               files=files,
+               ret=0)
+    files['/fake_src/out/Default/mb_type'] = 'gn\n'
+    self.check(['isolate', '//out/Default', 'foo_unittests'],
+               files=files,
+               ret=0)
+
+if __name__ == '__main__':
+  unittest.main()