[Predator] Switch from anonymous dict to CrashData.

appengine/findit/crash/test/predator_testcase.py

Index: appengine/findit/crash/test/predator_testcase.py
diff --git a/appengine/findit/crash/test/predator_testcase.py b/appengine/findit/crash/test/predator_testcase.py
index 2a888ed24775c3bb3a8b1bcdc563ae4050008f73..dc69c08e8f23caffb93b6a65b8e9806cce6aa73f 100644
--- a/appengine/findit/crash/test/predator_testcase.py
+++ b/appengine/findit/crash/test/predator_testcase.py
@@ -109,7 +109,6 @@ class PredatorTestCase(TestCase):  # pragma: no cover
 
   def GetMockFindit(self, get_repository=None, config=None,
                     client_id='mock_client'):
-    """Gets Mocked ``Findit`` object."""
     get_repository = (get_repository or
                       GitilesRepository.Factory(self.GetMockHttpClient()))
     config = config or CrashConfig.Get()
@@ -126,6 +125,27 @@ class PredatorTestCase(TestCase):  # pragma: no cover
       def ProcessResultForPublishing(self, result, key):
         return result
 
+      def GetCrashBuffer(self, crash_data):
+
+        class MockCrashBuffer(CrashBuffer):
+          @property
+          def regression_range(self):
+            return crash_data.get('regression_range')
+
+          @property
+          def stacktrace(self):
+            return None
+
+          @property
+          def dependencies(self):
+            return {}
+
+          @property
+          def dependency_rolls(self):
+            return {}
+
+        return MockCrashBuffer(crash_data)
+
       def GetAnalysis(self, crash_identifiers):
         return CrashAnalysis.Get(crash_identifiers)
 
@@ -139,7 +159,6 @@ class PredatorTestCase(TestCase):  # pragma: no cover
                         stack_trace=None, regression_range=None,
                         channel='canary', historical_metadata=None,
                         crash_identifiers=True, process_type='browser'):
-    """Gets Mocked crashed_data sent by clients."""
     if crash_identifiers is True: # pragma: no cover
       crash_identifiers = {
           'chrome_version': version,