Add presubmit check to lint test files.

webkit/tools/layout_tests/PRESUBMIT.py

+# Copyright (c) 2009 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.
+
+"""test_expectations.txt presubmit script.
+
+See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts for
+details on the presubmit API built into gcl.
+"""
+
+TEST_EXPECTATIONS = 'test_expectations.txt'
+
+def LintTestFiles(input_api, output_api):
+  current_dir = input_api.PresubmitLocalPath()
+  # Set 'webkit/tools/layout_tests' in include path.
+  python_paths = [
+      current_dir,
+      input_api.os_path.join(current_dir, '..', '..', '..', 'tools', 'python')
+  ]
+  env = input_api.environ.copy()
+  if env.get('PYTHONPATH'):
+    python_paths.append(env['PYTHONPATH'])
+  env['PYTHONPATH'] = input_api.os_path.pathsep.join(python_paths)
+  args = [
+      input_api.python_executable,
+      input_api.os_path.join(current_dir, 'run_webkit_tests.py'),
+      '--lint-test-files'
+  ]
+  subproc = input_api.subprocess.Popen(
+      args,
+      cwd=current_dir,
+      env=env,
+      stdin=input_api.subprocess.PIPE,
+      stdout=input_api.subprocess.PIPE,
+      stderr=input_api.subprocess.STDOUT)
+  stdoutdata = subproc.communicate()[0]
+  # TODO(ukai): consolidate run_webkit_tests --lint-test-files reports.
+  is_error = lambda line: (input_api.re.match('^Line:', line) or
+                           input_api.re.search('ERROR Line:', line))
+  error = filter(is_error, stdoutdata.splitlines())
+  if error:
+    return [output_api.PresubmitError('Lint error\n%s' % '\n'.join(error),
+                                      long_text=stdoutdata)]
+  return []
+
+def LintTestExpectations(input_api, output_api):
+  for path in input_api.LocalPaths():
+    if TEST_EXPECTATIONS == input_api.os_path.basename(path):
+      return LintTestFiles(input_api, output_api)
+  return []
+
+
+def CheckChangeOnUpload(input_api, output_api):
+  return LintTestExpectations(input_api, output_api)
+
+def CheckChangeOnCommit(input_api, output_api):
+  return LintTestExpectations(input_api, output_api)