[I-Spy] Add utilities to help manage expectations that track Chrome versions.

chrome/test/functional/ispy/client/chrome_utils_unittest.py

+#!/usr/bin/env python
+#
+# Copyright 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 json
+import unittest
+from PIL import Image
+
+import chrome_utils
+from ..common import mock_cloud_bucket
+
+
+class ChromeUtilsTest(unittest.TestCase):
+  """Unittest for ChromeUtils."""
+
+  def setUp(self):
+    self.cloud_bucket = mock_cloud_bucket.MockCloudBucket()
+    self.white_utils = chrome_utils.ChromeUtils(
+        self.cloud_bucket, 'versions.json',
+        lambda: Image.new('RGBA', (10, 10), (255, 255, 255, 255)))
+    self.black_utils = chrome_utils.ChromeUtils(
+        self.cloud_bucket, 'versions.json',
+        lambda: Image.new('RGBA', (10, 10), (0, 0, 0, 255)))
+
+  def testGenerateExpectationsRunComparison(self):
+    self.white_utils.GenerateExpectation('device', 'test', '1.1.1.1')
+    self.white_utils.UpdateExpectationVersion('1.1.1.1')
+    self.white_utils.PerformComparison('test1', 'device', 'test', '1.1.1.1')
+    expect_name = self.white_utils._CreateExpectationName(
+        'device', 'test', '1.1.1.1')
+    self.assertFalse(self.white_utils._ispy.FailureExists('test1', expect_name))
+    self.black_utils.PerformComparison('test2', 'device', 'test', '1.1.1.1')
+    self.assertTrue(self.white_utils._ispy.FailureExists('test2', expect_name))
+
+  def testUpdateExpectationVersion(self):
+    self.white_utils.UpdateExpectationVersion('1.0.0.0')
+    self.white_utils.UpdateExpectationVersion('1.0.4.0')
+    self.white_utils.UpdateExpectationVersion('2.1.5.0')
+    self.white_utils.UpdateExpectationVersion('1.1.5.0')
+    self.white_utils.UpdateExpectationVersion('0.0.0.0')
+    self.white_utils.UpdateExpectationVersion('1.1.5.0')
+    self.white_utils.UpdateExpectationVersion('0.0.0.1')
+    versions = json.loads(self.cloud_bucket.DownloadFile('versions.json'))
+    self.assertEqual(versions,
+        ['2.1.5.0', '1.1.5.0', '1.0.4.0', '1.0.0.0', '0.0.0.1', '0.0.0.0'])
+
+
+if __name__ == '__main__':
+  unittest.main()