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

appengine/findit/crash/test/chrome_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.chromecrash_parser import ChromeCrashParser
+from crash.chrome_crash_data import ChromeCrashData
+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 ChromeCrashDataTest(StacktraceTestSuite):
+  """Tests ``ChromeCrashData`` class."""
+
+  def testProperties(self):
+    """Tests ``ChromeCrashData`` specific properties."""
+    raw_crash_data = self.GetDummyCrashData()
+    crash_data = ChromeCrashData(raw_crash_data, None)
+    self.assertEqual(crash_data.channel,
+                     raw_crash_data['customized_data']['channel'])
+    self.assertEqual(crash_data.historical_metadata,
+                     raw_crash_data['customized_data']['historical_metadata'])
+
+  def testParseStacktraceFailed(self):
+    """Tests that ``stacktrace`` is None when failed to pars stacktrace."""
+    self.mock(ChromeDependencyFetcher, 'GetDependency', lambda *_: {})
+    crash_data = ChromeCrashData(
+        self.GetDummyCrashData(),
+        ChromeDependencyFetcher(self.GetMockRepoFactory()))
+    self.mock(ChromeCrashParser, 'Parse', lambda *args, **kwargs: None)
+    self.assertIsNone(crash_data.stacktrace)
+
+  def testParseStacktraceSucceeded(self):
+    """Tests parsing ``stacktrace``."""
+    self.mock(ChromeDependencyFetcher, 'GetDependency', lambda *_: {})
+    crash_data = ChromeCrashData(
+        self.GetDummyCrashData(),
+        ChromeDependencyFetcher(self.GetMockRepoFactory()))
+    stack = CallStack(0)
+    stacktrace = Stacktrace([stack], stack)
+    self.mock(ChromeCrashParser, 'Parse',
+              lambda *args, **kwargs: stacktrace)
+    self._VerifyTwoStacktracesEqual(crash_data.stacktrace, stacktrace)
+
+  def testParseStacktraceReturnsCache(self):
+    """Tests that ``stacktrace`` returns cached ``_stacktrace`` value."""
+    crash_data = ChromeCrashData(self.GetDummyCrashData(), None)
+    stack = CallStack(1)
+    stacktrace = Stacktrace([stack], stack)
+    crash_data._stacktrace = stacktrace
+    self._VerifyTwoStacktracesEqual(crash_data.stacktrace, stacktrace)
+
+  def testDetectRegressionRangeFailed(self):
+    """Tests that ``regression_range`` is None when detection failed."""
+    crash_data = ChromeCrashData(
+        self.GetDummyCrashData(),
+        ChromeDependencyFetcher(self.GetMockRepoFactory()))
+
+    with mock.patch('crash.detect_regression_range.DetectRegressionRange',
+                    lambda *_: None):
+      self.assertIsNone(crash_data.regression_range)
+
+  def testDetectRegressionRangeSucceeded(self):
+    """Tests detecting ``regression_range``."""
+    crash_data = ChromeCrashData(
+        self.GetDummyCrashData(),
+        ChromeDependencyFetcher(self.GetMockRepoFactory()))
+
+    regression_range = ('1', '3')
+    with mock.patch('crash.detect_regression_range.DetectRegressionRange',
+                    lambda *_: regression_range):
+      self.assertEqual(crash_data.regression_range, regression_range)
+
+  def testDetectRegressionRangeReturnsCache(self):
+    """Tests that ``regression_range`` returns cached ``_regression_range``."""
+    crash_data = ChromeCrashData(self.GetDummyCrashData(), None)
+    regression_range = ('1', '5')
+    crash_data._regression_range = regression_range
+    self.assertEqual(crash_data.regression_range, regression_range)
+
+  def testCrashedVersionDepsReturnsCache(self):
+    """Tests that ``_CrashedVersionDeps`` returns cached value."""
+    crash_data = ChromeCrashData(self.GetDummyCrashData(), None)
+    crashed_version_deps = {'src/': Dependency('src/', 'https://repo', 'rev')}
+    crash_data._crashed_version_deps = crashed_version_deps
+    self.assertEqual(crash_data._CrashedVersionDeps(), crashed_version_deps)
+
+  def testDependencies(self):
+    """Tests that ``dependencies`` returns filtered ``_CrashedVersionDeps``."""
+    crash_data = ChromeCrashData(self.GetDummyCrashData(), None)
+
+    chromium_dep = Dependency('src/', 'https://repo', 'rev1')
+    crash_data._crashed_version_deps = {
+        chromium_dep.path: chromium_dep,
+        'src/dummy': Dependency('src/dummy', 'https://r', 'rev2')}
+    stack = CallStack(0, frame_list=[
+        StackFrame(0, 'src/', 'func', 'a.cc', 'src/a.cc', [5])])
+    stacktrace = Stacktrace([stack], stack)
+    crash_data._stacktrace = stacktrace
+    self.assertEqual(crash_data.dependencies,
+                     {chromium_dep.path: chromium_dep})
+
+  def testDependenciesReturnsCache(self):
+    """Tests that ``dependencies`` returns cached ``_dependencies`` value."""
+    crash_data = ChromeCrashData(self.GetDummyCrashData(), None)
+    crashed_version_deps = {'src/': Dependency('src/', 'https://repo', 'rev')}
+    crash_data._dependencies = crashed_version_deps
+    self.assertEqual(crash_data.dependencies, crashed_version_deps)
+
+  def testDependencyRollsReturnsCache(self):
+    """Tests that ``dependency_rolls`` returns cached ``_dependency_rolls``."""
+    crash_data = ChromeCrashData(self.GetDummyCrashData(), None)
+    dep_roll = {'src/': DependencyRoll('src/', 'https://repo', 'rev0', 'rev3')}
+    crash_data._dependency_rolls = dep_roll
+    self.assertEqual(crash_data.dependency_rolls, dep_roll)
+
+  def testDependencyRollsWhenRegressionRangeIsEmpty(self):
+    """Tests that ``regression_rolls`` is {} when regression_range is empty."""
+    crash_data = ChromeCrashData(self.GetDummyCrashData(), None)
+    crash_data._regression_range = None
+    self.assertEqual(crash_data.dependency_rolls, {})
+
+  def testDependencyRoll(self):
+    """Tests parsing ``regression_rolls`` from regression_range."""
+    dep_roll = DependencyRoll('src/', 'https://repo', 'rev1', 'rev6')
+    regression_rolls = {
+        dep_roll.path: dep_roll,
+        'src/dummy': DependencyRoll('src/dummy', 'https://r', 'rev2', 'rev4'),
+        'src/add': DependencyRoll('src/add', 'https://rr', None, 'rev5')
+    }
+
+    self.mock(ChromeDependencyFetcher, 'GetDependencyRollsDict',
+              lambda *_: regression_rolls)
+    crash_data = ChromeCrashData(
+        self.GetDummyCrashData(),
+        ChromeDependencyFetcher(self.GetMockRepoFactory()))
+
+    crash_data._regression_range = ('rev1', 'rev6')
+    chromium_dep = Dependency('src/', 'https://repo', 'rev1')
+    crash_data._crashed_version_deps = {
+        chromium_dep.path: chromium_dep,
+        'src/dummy': Dependency('src/dummy', 'https://r', 'rev2')}
+    stack = CallStack(0, frame_list=[
+        StackFrame(0, 'src/', 'func', 'a.cc', 'src/a.cc', [5])])
+    stacktrace = Stacktrace([stack], stack)
+    crash_data._stacktrace = stacktrace
+
+    self.assertEqual(crash_data.dependency_rolls, {dep_roll.path: dep_roll})