[Android WebView] Prepare the copyrights scanner to run from presubmit scripts

android_webview/tools/copyright_scanner_unittest.py

+#!/usr/bin/env python
+# Copyright 2014 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.
+
+"""Unit tests for Copyright Scanner utilities."""
+
+import os
+import re
+import sys
+import unittest
+
+test_dir = os.path.dirname(os.path.abspath(__file__))
+sys.path.extend([
+    os.path.normpath(os.path.join(test_dir, '..', '..', 'tools')),
+    os.path.join(test_dir),
+])
+
+import find_depot_tools
+from testing_support.super_mox import SuperMoxTestBase
+
+import copyright_scanner
+
+class FindCopyrightsTest(SuperMoxTestBase):
+  def setUp(self):
+    SuperMoxTestBase.setUp(self)
+    self.input_api = self.mox.CreateMockAnything()
+    self.input_api.re = re
+    self.input_api.os_path = os.path
+    self.input_api.os_walk = os.walk
+
+  def ShouldMatchReferenceOutput(self, test_data, expected_output):
+    test_data_pos = 0
+    def ReadTestData(ignore1, ignore2):

[mkosiba (inactive), 2014/10/22 11:16:28]

you could pull this into your for loop and drop the test_data_pos entirely

for data in test_data:
  self.input_api.ReadFile = lambda _1, _2: data
  actual_output...

[mnaganov (inactive), 2014/10/22 11:55:42]

Yay lambdas! Done. Thank you very much!

+      return test_data[test_data_pos]
+    self.input_api.ReadFile = ReadTestData
+    for test_data_pos in range(0, len(test_data)):
+      actual_output = copyright_scanner.FindCopyrights(self.input_api, '', [''])
+      self.assertEqual(
+        expected_output,
+        actual_output,
+        'Input """\n%s""", expected output: "%s", actual: "%s"' % \
+            (test_data[test_data_pos], expected_output, actual_output));
+
+  def testCopyrightedFiles(self):
+    test_data = [
+      '// (c) 2014 Google Inc.\n//\n//  (a) One\n//\n//  (b) Two\n//\n',
+      'Copyright 2014 Google Inc.\n',
+      'Copr. 2014 Google Inc.',
+      '\xc2\xa9 2014 Google Inc.',
+      'Copyright 2014    Google  Inc.'
+    ]
+    self.ShouldMatchReferenceOutput(test_data, [['2014 Google Inc.']])
+
+  def testGeneratedFiles(self):
+    test_data = [
+      'ALL CHANGES MADE IN THIS FILE WILL BE LOST\nCopyright 2014 Google\n',
+      'GENERATED FILE. DO NOT EDIT\nCopyright 2014 Google\n',
+      'GENERATED. DO NOT DELETE THIS FILE.\nCopyright 2014 Google\n',
+      'DO NOT EDIT\nCopyright 2014 Google\n',
+      'DO NOT DELETE THIS FILE\nCopyright 2014 Google\n',
+      'All changes made in this file will be lost\nCopyright 2014 Google\n',
+      'Automatically generated file\nCopyright 2014 Google\n',
+      'Synthetically generated dummy file\nCopyright 2014 Google\n',
+      'Generated data (by gnugnu)\nCopyright 2014 Google\n'
+    ]
+    self.ShouldMatchReferenceOutput(test_data, [['GENERATED FILE']])
+
+  def testNonCopyrightedFiles(self):
+    test_data = [
+      'std::cout << "Copyright 2014 Google"\n',
+      '// Several points can be made:\n//\n//  (a) One\n//\n//  (b) Two\n'
+      '//\n//  (c) Three\n//\n',
+      'See \'foo\' for copyright information.\n',
+      'See \'foo\' for the copyright notice.\n',
+      'See \'foo\' for the copyright and other things.\n'
+    ]
+    self.ShouldMatchReferenceOutput(test_data, [['*No copyright*']])
+
+  def testNonGeneratedFiles(self):
+    test_data = [
+      'This file was prohibited from being generated.\n',
+      'Please do not delete our files! They are valuable to us.\n',
+      'Manually generated from dice rolls.\n',
+      '"""This Python script produces generated data\n"""\n',
+      '\'\'\'This Python script produces generated data\n\'\'\'\n'
+    ]
+    self.ShouldMatchReferenceOutput(test_data, [['*No copyright*']])
+
+if __name__ == '__main__':
+  unittest.main()