Add helper script for running CTS APKs stored in the GS buckets.

android_webview/tools/run_cts.py

Index: android_webview/tools/run_cts.py
diff --git a/android_webview/tools/run_cts.py b/android_webview/tools/run_cts.py
new file mode 100755
index 0000000000000000000000000000000000000000..058b0f83b12a3ce0ca64cacf7c1113f2dfb254d0
--- /dev/null
+++ b/android_webview/tools/run_cts.py
@@ -0,0 +1,110 @@
+#!/usr/bin/env python
+#
+# Copyright 2016 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Runs the CTS test APKs stored in GS."""
+
+import argparse
+import json
+import os
+import shutil
+import sys
+import tempfile
+
+# pylint: disable=import-error
+sys.path.append(os.path.join(
+    os.path.dirname(__file__), os.pardir, os.pardir, 'build', 'android'))
+import devil_chromium
+from devil.utils import cmd_helper
+
+sys.path.append(os.path.join(
+    os.path.dirname(__file__), os.pardir, os.pardir, 'build'))
+import find_depot_tools
+# pylint: enable=import-error
+
+_CTS_BUCKET = 'gs://chromium-cts'
+
+_GSUTIL_PATH = os.path.join(find_depot_tools.DEPOT_TOOLS_PATH, 'gsutil.py')
+_TEST_RUNNER_PATH = os.path.join(
+    os.path.dirname(__file__), os.pardir, os.pardir,
+    'build', 'android', 'test_runner.py')
+
+_EXPECTED_FAILURES_FILE = os.path.join(
+    os.path.dirname(__file__), 'cts_config', 'expected_failure_on_bot.json')
+_WEBVIEW_CTS_GCS_PATH_FILE = os.path.join(
+    os.path.dirname(__file__), 'cts_config', 'webview_cts_gcs_path.json')
+
+
+def GetGSCtsApkPath(arch, platform):
+  """Gets path of CTS APK from Google Storage"""
+  with open(_WEBVIEW_CTS_GCS_PATH_FILE) as f:
+    cts_gcs_path_info = json.load(f)
+  try:
+    return '%s/%s' % (_CTS_BUCKET, cts_gcs_path_info[arch][platform]['apk'])
+  except KeyError:
+    raise Exception('No CTS test available for arch:%s, android:%s' %
+                    (arch, platform))
+
+
+def GetExpectedFailures():
+  """Gets list of tests expected to fail."""
+  with open(_EXPECTED_FAILURES_FILE) as f:
+    expected_failures_info = json.load(f)
+  expected_failures = []
+  for class_name, methods in expected_failures_info.iteritems():
+    expected_failures.extend(['%s#%s' % (class_name, m['name'])
+                              for m in methods])
+  return expected_failures
+
+
+def DownloadAndRunCTS(args, test_runner_args):
+  temp_dir = None

[the real yoland, 2016/12/08 19:16:03]

hmm, I wonder if we can store CTS apk in a third_party repo instead of
downloading them each time for run, because I would really like to use this
manually

[mikecase (-- gone --), 2016/12/08 19:17:58]

How about an optionally --apk-dir arg. If specified it will look for and cache
the APKs there? If not specified, it will delete the APK after running.

[mikecase (-- gone --), 2016/12/08 22:58:43]

CTS are now cached locally if you specify apk-dir arg. Otherwise, they are
downloaded to a temp_dir and deleted.

[the real yoland, 2016/12/09 20:56:36]

ya, make sense, not everyone need CTS, third_party repo might be a bit much

+  try:
+    temp_dir = tempfile.mkdtemp()
+    cmd = [_GSUTIL_PATH, 'cp',
+           GetGSCtsApkPath(args.arch, args.platform),
+           temp_dir]
+    if cmd_helper.RunCmd(cmd):
+      raise Exception('Error downloading CTS from Google Storage.')
+    cts_apk_name = os.listdir(temp_dir)[0]
+    local_cts_apk_path = os.path.join(temp_dir, cts_apk_name)
+
+    test_runner_args += ['--test-apk', local_cts_apk_path]
+    # TODO(mikecase): This doesn't work at all with the
+    # --gtest-filter test runner option currently. The
+    # filter options will just override eachother.
+    if args.skip_expected_failures:
+      test_runner_args += ['-f=-%s' % ':'.join(GetExpectedFailures())]
+    return cmd_helper.RunCmd(
+        [_TEST_RUNNER_PATH] + ['instrumentation'] + test_runner_args)
+  finally:
+    if temp_dir:
+      shutil.rmtree(temp_dir)
+
+
+def main():
+  parser = argparse.ArgumentParser()
+  parser.add_argument(
+      '--arch',
+      choices=['arm_64'],
+      required=True,
+      help='Arch for CTS tests.')
+  parser.add_argument(
+      '--platform',
+      choices=['L', 'M', 'N'],
+      required=True,
+      help='Android platform version for CTS tests.')
+  parser.add_argument(
+      '--skip-expected-failures',
+      action='store_true')
+
+  args, test_runner_args = parser.parse_known_args()
+  devil_chromium.Initialize()
+
+  return DownloadAndRunCTS(args, test_runner_args)
+
+
+if __name__ == '__main__':
+  sys.exit(main())