def testMinDistanceFeatureIsOverMax(self):
"""Test that we return log(0) when the min_distance is too large."""
report = self._GetDummyReport(
deps={'src/': Dependency('src/', 'https://repo', '6')},
dep_rolls={
'src/': DependencyRoll('src/', 'https://repo', '0', '4')
})
distance = _MAXIMUM + 1
frame = _MOCK_FRAME._replace(file_path='file')
crashed = CrashedFile('file')
matches = {
crashed:
CrashMatch(crashed,
[FileChangeInfo(ChangeType.MODIFY, 'file', 'file')],
[FrameInfo(frame, 0)])
}
with mock.patch(
'analysis.linear.changelist_features.'
'min_distance.MinDistanceFeature.'
'DistanceBetweenTouchedFileAndFrameInfos') as mock_distance:
mock_distance.return_value = min_distance.Distance(distance, None)
self.assertEqual(
0.0,
min_distance.MinDistanceFeature(
self._get_repository,
_MAXIMUM)(report)(self._GetMockSuspect(), matches).value)
def testUpdate(self):
"""Tests that ``Update`` updates distance and frame."""
distance_info = min_distance.Distance(100, None)
distance_info.Update(50, None)
self.assertEqual(distance_info.distance, 50)
distance_info.Update(80, None)
self.assertEqual(distance_info.distance, 50)
def testMinDistanceFeatureMiddling(self):
"""Test that the feature returns middling scores for middling distances."""
report = self._GetDummyReport(
deps={'src/': Dependency('src/', 'https://repo', '6')},
dep_rolls={
'src/': DependencyRoll('src/', 'https://repo', '0', '4')
})
frame = StackFrame(0, 'src/', 'func', 'f.cc', 'f.cc', [232],
'https://repo')
distance = 42.
crashed = CrashedFile('file')
matches = {
crashed:
CrashMatch(crashed,
[FileChangeInfo(ChangeType.MODIFY, 'file', 'file')],
[FrameInfo(frame, 0)])
}
with mock.patch(
'analysis.linear.changelist_features.'
'min_distance.MinDistanceFeature.'
'DistanceBetweenTouchedFileAndFrameInfos') as mock_distance:
mock_distance.return_value = min_distance.Distance(distance, frame)
self.assertEqual((_MAXIMUM - distance) / _MAXIMUM,
min_distance.MinDistanceFeature(
self._get_repository,
_MAXIMUM)(report)(self._GetMockSuspect(),
matches).value)
def testMinDistanceChangedFiles(self):
"""Tests ``ChangedFile`` method."""
report = self._GetDummyReport(
deps={'src/': Dependency('src/', 'https://repo', '6')},
dep_rolls={'src/': DependencyRoll('src/', 'https://repo', '0', '4')})
distance = 42
crashed = CrashedFile(_MOCK_FRAME)
matches = {
crashed:
CrashMatch(crashed,
[FileChangeInfo(ChangeType.MODIFY, 'file', 'file')],
[FrameInfo(_MOCK_FRAME, 0)])
}
frame = StackFrame(0, 'src/', 'func', 'f.cc', 'f.cc', [7], 'https://repo')
with mock.patch('analysis.linear.changelist_features.min_distance.'
'MinDistanceFeature.'
'DistanceBetweenTouchedFileAndFrameInfos') as mock_distance:
mock_distance.return_value = min_distance.Distance(distance, frame)
self.assertEqual(
min_distance.MinDistanceFeature(
self._get_repository, _MAXIMUM)(report)(
self._GetMockSuspect(), matches).changed_files,
[ChangedFile(name='file',
blame_url=('%s/+blame/%s/f.cc#%d' %
(frame.repo_url,
report.crashed_version,
frame.crashed_line_numbers[0])),
reasons=['Distance between touched lines and crashed'
' lines is %d, in frame #%d' % (
distance, frame.index)])])
def testMinDistanceFeatureInfinityDistance(self):
"""Test that we return log(0) when the min_distance is infinity.
The infinity distance means the touched file get overwritten by other
cls, and the change didn't show in the final blame file.
"""
report = self._GetDummyReport(
deps={'src/': Dependency('src/', 'https://repo', '6')},
dep_rolls={'src/': DependencyRoll('src/', 'https://repo', '0', '4')})
suspect = self._GetMockSuspect()
crashed = CrashedFile(_MOCK_FRAME)
matches = {
crashed:
CrashMatch(crashed,
[FileChangeInfo(ChangeType.MODIFY, 'file', 'file')],
[FrameInfo(_MOCK_FRAME, 0)])
}
with mock.patch('analysis.linear.changelist_features.min_distance.'
'MinDistanceFeature.'
'DistanceBetweenTouchedFileAndFrameInfos') as mock_distance:
mock_distance.return_value = None
self.assertEqual(
0.0,
min_distance.MinDistanceFeature(
self._get_repository, _MAXIMUM)(report)(suspect, matches).value)
with mock.patch('analysis.linear.changelist_features.min_distance.'
'MinDistanceFeature.'
'DistanceBetweenTouchedFileAndFrameInfos') as mock_distance:
mock_distance.return_value = min_distance.Distance(float('inf'), None)
self.assertEqual(
0.0,
min_distance.MinDistanceFeature(self._get_repository, 100)(report)(
suspect, matches).value)
def testDistanceBetweenTouchedFileAndFrameInfos(self):
"""Tests ``DistanceBetweenTouchedFileAndFrameInfos`` method."""
feature = min_distance.MinDistanceFeature(self._get_repository, _MAXIMUM)
frame1 = StackFrame(0, 'src/', 'func', 'a.cc', 'src/a.cc', [7],
repo_url='https://repo_url')
frame2 = StackFrame(0, 'src/', 'func', 'a.cc', 'src/a.cc', [17],
repo_url='https://repo_url')
touched_file = FileChangeInfo(ChangeType.MODIFY, 'file', 'file')
blame = Blame('rev', 'src/')
blame.AddRegions([Region(0, 10, 'rev', 'a1', 'e1', 't1'),
Region(11, 20, 'dummy_rev', 'a2', 'e2', 't2')])
url_to_blame = {'rev/file': blame}
def _MockGetBlame(path, revision):
revision_path = '%s/%s' % (revision, path)
return url_to_blame.get(revision_path)
with mock.patch('libs.gitiles.gitiles_repository.GitilesRepository.'
'GetBlame') as mock_get_blame:
mock_get_blame.side_effect = _MockGetBlame
distance_info = feature.DistanceBetweenTouchedFileAndFrameInfos(
'rev', touched_file, [FrameInfo(frame1, 0), FrameInfo(frame2, 0)],
Dependency('src/', 'https://repo', 'rev'))
self.assertEqual(distance_info, min_distance.Distance(0, frame1))
distance_info = feature.DistanceBetweenTouchedFileAndFrameInfos(
'wrong_rev', touched_file, [FrameInfo(frame1, 0),
FrameInfo(frame2, 0)],
Dependency('src/', 'https://repo', 'wrong_rev'))
self.assertIsNone(distance_info)
def testIsInfinity(self):
"""Tests that ``IsInfinity`` checks if distance is infinity."""
distance_info = min_distance.Distance(float('inf'), None)
self.assertTrue(distance_info.IsInfinity())
def testDistanceBetweenTouchedFileAndFrameInfos(self):
"""Tests ``DistanceBetweenTouchedFileAndFrameInfos`` method."""
feature = min_distance.MinDistanceFeature(self._get_repository,
_MAXIMUM)
frame1 = StackFrame(0,
'src/',
'func',
'a.cc',
'src/a.cc', [7],
repo_url='https://repo_url')
frame2 = StackFrame(0,
'src/',
'func',
'a.cc',
'src/a.cc', [17],
repo_url='https://repo_url')
profiler_frame = ProfilerStackFrame(0,
-0.1,
-5.3,
True,
function_start_line=13)
profiler_frame_without_line_number = ProfilerStackFrame(
0, -0.1, -5.3, True, function_start_line=None)
touched_file = FileChangeInfo(ChangeType.MODIFY, 'file', 'file')
blame = Blame('rev', 'src/')
blame.AddRegions([
Region(0, 10, 'rev', 'a1', 'e1', 't1'),
Region(11, 20, 'dummy_rev', 'a2', 'e2', 't2')
])
url_to_blame = {'rev/file': blame}
def _MockGetBlame(path, revision):
revision_path = '%s/%s' % (revision, path)
return url_to_blame.get(revision_path)
with mock.patch('libs.gitiles.gitiles_repository.GitilesRepository.'
'GetBlame') as mock_get_blame:
mock_get_blame.side_effect = _MockGetBlame
distance_info = feature.DistanceBetweenTouchedFileAndFrameInfos(
'rev', touched_file,
[FrameInfo(frame1, 0),
FrameInfo(frame2, 0)],
Dependency('src/', 'https://repo', 'rev'))
self.assertEqual(distance_info, min_distance.Distance(0, frame1))
distance_info = feature.DistanceBetweenTouchedFileAndFrameInfos(
'wrong_rev', touched_file,
[FrameInfo(frame1, 0),
FrameInfo(frame2, 0)],
Dependency('src/', 'https://repo', 'wrong_rev'))
self.assertIsNone(distance_info)
# Test with a ProfilerStackFrame
distance_info = feature.DistanceBetweenTouchedFileAndFrameInfos(
'rev', touched_file, [
FrameInfo(profiler_frame, 0),
FrameInfo(profiler_frame_without_line_number, 0)
], Dependency('src/', 'https://repo', 'rev'))
self.assertEqual(distance_info,
min_distance.Distance(4, profiler_frame))
# Test that the distance remains at ``inf`` if the ProfilerStackFrames
# passed in do not have line numbers.
distance_info = feature.DistanceBetweenTouchedFileAndFrameInfos(
'rev', touched_file,
[FrameInfo(profiler_frame_without_line_number, 0)],
Dependency('src/', 'https://repo', 'rev'))
self.assertEqual(distance_info,
min_distance.Distance(float('inf'), None))