bluetooth: Add script to generate tests based on templates

third_party/WebKit/LayoutTests/bluetooth/generate_test.py

+#!/usr/bin/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.
+"""Test that the set of gen-* files is the same as the generated files."""
+
+import fnmatch
+import os
+import sys
+import generate
+
+UPDATE_TIP = ('To update the generated tests, run:\n'
+              '$ python third_party/WebKit/LayoutTests/bluetooth/generate.py')
+
+
+def main():
+  generated_files = set()
+  # Tests data in gen-* files is the same as the data generated.
+  for generated_test in generate.GetGeneratedTests():
+    generated_files.add(generated_test.path)
+    try:
+      with open(generated_test.path) as f:
+        data = f.read().decode('utf-8')
+        if data != generated_test.data:
+          print generated_test.path + ' does not match template.'
+          print UPDATE_TIP
+          return -1
+    except IOError, e:
+      if e.errno == 2:
+        print 'Missing generated test:\n{}\nFor template:\n{}'.format(
+            generated_test.path, generated_test.template)
+        print UPDATE_TIP
+        return -1
+
+  # Tests that there are no obsolete generated files.
+  previous_generated_files = set()
+  current_path = os.path.dirname(os.path.realpath(__file__))
+  for root, _, filenames in os.walk(current_path):
+    for filename in fnmatch.filter(filenames, 'gen-*.html'):
+      previous_generated_files.add(os.path.join(root, filename))
+
+  if previous_generated_files != generated_files:
+    print 'There are extra generated tests. Please remove them.'
+    for test_path in previous_generated_files - generated_files:
+      print test_path
+    return -1
+
+
+if __name__ == '__main__':
+  sys.exit(main())