[Predator] Add CrashData class to process raw json crash data.

appengine/findit/crash/test/crash_data_test.py

+# Copyright 2017 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 mock
+
+from common.chrome_dependency_fetcher import ChromeDependencyFetcher
+from common.dependency import Dependency
+from common.dependency import DependencyRoll
+from crash.crash_data import CrashData
+from crash.crash_report import CrashReport
+from crash.stacktrace import CallStack
+from crash.stacktrace import StackFrame
+from crash.stacktrace import Stacktrace
+from crash.test.predator_testcase import PredatorTestCase
+from crash.test.stacktrace_test_suite import StacktraceTestSuite
+
+
+class CrashDataTest(PredatorTestCase):
+  """Tests ``CrashData`` class."""
+
+  def testProperties(self):
+    """Tests all properties."""
+    raw_crash_data = self.GetDummyCrashData()
+    crash_data = CrashData(raw_crash_data)
+
+    self.assertEqual(crash_data.identifiers, 
+                     raw_crash_data['crash_identifiers'])
+    self.assertEqual(crash_data.crashed_version, 
+                     raw_crash_data['chrome_version'])
+    self.assertEqual(crash_data.signature, 
+                     raw_crash_data['signature'])
+    self.assertEqual(crash_data.platform, 
+                     raw_crash_data['platform'])
+
+    crash_data.platform = 'new platform'
+    self.assertEqual(crash_data.platform, 'new platform')