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# Copyright (C) 2010 Google Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
import cPickle
import logging
from webkitpy.layout_tests.models import test_expectations
_log = logging.getLogger(__name__)
def is_reftest_failure(failure_list):
failure_types = [type(f) for f in failure_list]
return set((FailureReftestMismatch, FailureReftestMismatchDidNotOccur, FailureReftestNoImagesGenerated)).intersection(failure_types)
# FIXME: This is backwards. Each TestFailure subclass should know what
# test_expectation type it corresponds too. Then this method just
# collects them all from the failure list and returns the worst one.
def determine_result_type(failure_list):
"""Takes a set of test_failures and returns which result type best fits
the list of failures. "Best fits" means we use the worst type of failure.
Returns:
one of the test_expectations result types - PASS, FAIL, CRASH, etc."""
if not failure_list or len(failure_list) == 0:
return test_expectations.PASS
failure_types = [type(f) for f in failure_list]
if FailureCrash in failure_types:
return test_expectations.CRASH
elif FailureTimeout in failure_types:
return test_expectations.TIMEOUT
elif FailureEarlyExit in failure_types:
return test_expectations.SKIP
elif (FailureMissingResult in failure_types or
FailureMissingImage in failure_types or
FailureMissingImageHash in failure_types or
FailureMissingAudio in failure_types or
FailureNotTested in failure_types):
return test_expectations.MISSING
else:
is_text_failure = FailureTextMismatch in failure_types
is_image_failure = (FailureImageHashIncorrect in failure_types or
FailureImageHashMismatch in failure_types)
is_audio_failure = (FailureAudioMismatch in failure_types)
if is_text_failure and is_image_failure:
return test_expectations.IMAGE_PLUS_TEXT
elif is_text_failure:
return test_expectations.TEXT
elif is_image_failure or is_reftest_failure(failure_list):
return test_expectations.IMAGE
elif is_audio_failure:
return test_expectations.AUDIO
else:
raise ValueError("unclassifiable set of failures: "
+ str(failure_types))
class TestFailure(object):
"""Abstract base class that defines the failure interface."""
@staticmethod
def loads(s):
"""Creates a TestFailure object from the specified string."""
return cPickle.loads(s)
def message(self):
"""Returns a string describing the failure in more detail."""
raise NotImplementedError
def __eq__(self, other):
return self.__class__.__name__ == other.__class__.__name__
def __ne__(self, other):
return self.__class__.__name__ != other.__class__.__name__
def __hash__(self):
return hash(self.__class__.__name__)
def dumps(self):
"""Returns the string/JSON representation of a TestFailure."""
return cPickle.dumps(self)
def driver_needs_restart(self):
"""Returns True if we should kill DumpRenderTree/WebKitTestRunner before the next test."""
return False
def write_failure(self, writer, driver_output, expected_driver_output, port):
assert isinstance(self, (FailureTimeout, FailureReftestNoImagesGenerated))
class FailureText(TestFailure):
def write_failure(self, writer, driver_output, expected_driver_output, port):
writer.write_text_files(driver_output.text, expected_driver_output.text)
writer.create_text_diff_and_write_result(driver_output.text, expected_driver_output.text)
class FailureAudio(TestFailure):
def write_failure(self, writer, driver_output, expected_driver_output, port):
writer.write_audio_files(driver_output.audio, expected_driver_output.audio)
writer.create_audio_diff_and_write_result(driver_output.audio, expected_driver_output.audio)
class FailureTimeout(TestFailure):
def __init__(self, is_reftest=False):
super(FailureTimeout, self).__init__()
self.is_reftest = is_reftest
def message(self):
return "test timed out"
def driver_needs_restart(self):
return True
class FailureCrash(TestFailure):
def __init__(self, is_reftest=False, process_name='DumpRenderTree', pid=None):
super(FailureCrash, self).__init__()
self.process_name = process_name
self.pid = pid
self.is_reftest = is_reftest
def message(self):
if self.pid:
return "%s crashed [pid=%d]" % (self.process_name, self.pid)
return self.process_name + " crashed"
def driver_needs_restart(self):
return True
def write_failure(self, writer, driver_output, expected_driver_output, port):
crashed_driver_output = expected_driver_output if self.is_reftest else driver_output
writer.write_crash_log(crashed_driver_output.crash_log)
class FailureMissingResult(FailureText):
def message(self):
return "-expected.txt was missing"
class FailureNotTested(FailureText):
def message(self):
return 'test was not run'
class FailureTextMismatch(FailureText):
def message(self):
return "text diff"
class FailureMissingImageHash(TestFailure):
def message(self):
return "-expected.png was missing an embedded checksum"
def write_failure(self, writer, driver_output, expected_driver_output, port):
writer.write_image_files(driver_output.image, expected_driver_output.image)
class FailureMissingImage(TestFailure):
def message(self):
return "-expected.png was missing"
def write_failure(self, writer, driver_output, expected_driver_output, port):
writer.write_image_files(driver_output.image, expected_image=None)
class FailureImageHashMismatch(TestFailure):
def __init__(self, diff_percent=0):
super(FailureImageHashMismatch, self).__init__()
self.diff_percent = diff_percent
def message(self):
return "image diff"
def write_failure(self, writer, driver_output, expected_driver_output, port):
writer.write_image_files(driver_output.image, expected_driver_output.image)
writer.write_image_diff_files(driver_output.image_diff)
class FailureImageHashIncorrect(TestFailure):
def message(self):
return "-expected.png embedded checksum is incorrect"
class FailureReftestMismatch(TestFailure):
def __init__(self, reference_filename=None):
super(FailureReftestMismatch, self).__init__()
self.reference_filename = reference_filename
self.diff_percent = None
def message(self):
return "reference mismatch"
def write_failure(self, writer, driver_output, expected_driver_output, port):
writer.write_image_files(driver_output.image, expected_driver_output.image)
# FIXME: This work should be done earlier in the pipeline (e.g., when we compare images for non-ref tests).
# FIXME: We should always have 2 images here.
if driver_output.image and expected_driver_output.image:
diff_image, diff_percent, err_str = port.diff_image(expected_driver_output.image, driver_output.image, tolerance=0)
if diff_image:
writer.write_image_diff_files(diff_image)
self.diff_percent = diff_percent
else:
_log.warn('ref test mismatch did not produce an image diff.')
writer.write_reftest(self.reference_filename)
class FailureReftestMismatchDidNotOccur(TestFailure):
def __init__(self, reference_filename=None):
super(FailureReftestMismatchDidNotOccur, self).__init__()
self.reference_filename = reference_filename
def message(self):
return "reference mismatch didn't happen"
def write_failure(self, writer, driver_output, expected_driver_output, port):
writer.write_image_files(driver_output.image, expected_image=None)
writer.write_reftest(self.reference_filename)
class FailureReftestNoImagesGenerated(TestFailure):
def __init__(self, reference_filename=None):
super(FailureReftestNoImagesGenerated, self).__init__()
self.reference_filename = reference_filename
def message(self):
return "reference didn't generate pixel results."
class FailureMissingAudio(FailureAudio):
def message(self):
return "expected audio result was missing"
class FailureAudioMismatch(FailureAudio):
def message(self):
return "audio mismatch"
class FailureEarlyExit(TestFailure):
def message(self):
return "skipped due to early exit"
# Convenient collection of all failure classes for anything that might
# need to enumerate over them all.
ALL_FAILURE_CLASSES = (FailureTimeout, FailureCrash, FailureMissingResult, FailureNotTested,
FailureTextMismatch, FailureMissingImageHash,
FailureMissingImage, FailureImageHashMismatch,
FailureImageHashIncorrect, FailureReftestMismatch,
FailureReftestMismatchDidNotOccur, FailureReftestNoImagesGenerated,
FailureMissingAudio, FailureAudioMismatch,
FailureEarlyExit)