Intial checkin of layout test analyzer.

media/tools/layout_tests/trend_graph_unittest.py

+#!/usr/bin/python
+# Copyright (c) 2011 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 shutil
+import unittest
+
+from trend_graph import TrendGraph
+
+
+class TestTrendGraph(unittest.TestCase):
+
+  def testUpdate(self):
+    test_graph_file_backup_path = os.path.join('test_data', 'graph.html.bak')
+    test_graph_file_path = os.path.join('test_data', 'graph.html')
+    shutil.copyfile(test_graph_file_backup_path, test_graph_file_path)
+    trend_graph = TrendGraph(test_graph_file_path)
+    data_map = {}
+    data_map['whole'] = (str(1), 'undefined', 'undefined')
+    data_map['skip'] = (str(2), 'undefined', 'undefined')
+    data_map['nonskip'] = (str(3), 'undefined', 'undefined')
+    data_map['passingrate'] = (str(4), 'undefined', 'undefined')
+
+    trend_graph.Update('2008,1,1,13,45,00', data_map)
+    # Assert the result graph from the file.
+    f = open(test_graph_file_path)
+    lines2 = f.readlines()
+    f.close()
+    lineCount = 0
+    for line in lines2:
+      if '2008,1,1,13,45,00' in line:
+        lineCount += 1
+    self.assertEqual(lineCount, 2)