Add git-number script to calculate generation numbers for commits.

testing_support/coverage_utils.py

Index: testing_support/coverage_utils.py
diff --git a/testing_support/coverage_utils.py b/testing_support/coverage_utils.py
new file mode 100644
index 0000000000000000000000000000000000000000..6b4ec3d5b193c0a30b47b380e6ee3de08e438d3c
--- /dev/null
+++ b/testing_support/coverage_utils.py
@@ -0,0 +1,40 @@
+# Copyright (c) 2013 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.
+
+import os
+import sys
+import unittest
+
+ROOT_PATH = os.path.abspath(os.path.join(
+    os.path.dirname(os.path.dirname(__file__))))
+
+
+def covered_main(includes):
+  """Equivalent of unittest.main(), except that it gathers coverage data, and
+  asserts if the test is not at 100% coverage.
+
+  Args:
+    includes (list(str) or str) - List of paths to include in coverage report.
+      May also be a single path instead of a list.
+  """
+  try:
+    import coverage
+  except ImportError:
+    sys.path.insert(0, os.path.join(ROOT_PATH, 'third_party'))
+    import coverage
+  COVERAGE = coverage.coverage(include=includes)
+  COVERAGE.start()
+
+  retcode = 0
+  try:
+    unittest.main()
+  except SystemExit as e:
+    retcode = e.code or retcode
+
+  COVERAGE.stop()
+  if COVERAGE.report() != 100.0:
+    print 'FATAL: not at 100% coverage.'
+    retcode = 2
+
+  return retcode