# Copyright (C) 2011 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 logging import re import time from webkitpy.layout_tests.controllers import test_result_writer from webkitpy.layout_tests.port.driver import DriverInput, DriverOutput from webkitpy.layout_tests.models import test_expectations from webkitpy.layout_tests.models import test_failures from webkitpy.layout_tests.models.test_results import TestResult _log = logging.getLogger(__name__) def run_single_test(port, options, test_input, driver, worker_name): runner = SingleTestRunner(options, port, driver, test_input, worker_name) return runner.run() class SingleTestRunner: def __init__(self, options, port, driver, test_input, worker_name): self._options = options self._port = port self._filesystem = port.host.filesystem self._driver = driver self._timeout = test_input.timeout self._worker_name = worker_name self._test_name = test_input.test_name self._should_run_pixel_test = test_input.should_run_pixel_test self._is_reftest = False self._reference_files = port.reference_files(self._test_name) if self._reference_files: # Detect and report a test which has a wrong combination of expectation files. # For example, if 'foo.html' has two expectation files, 'foo-expected.html' and # 'foo-expected.txt', we should warn users. One test file must be used exclusively # in either layout tests or reftests, but not in both. for suffix in ('.txt', '.png', '.wav'): expected_filename = self._port.expected_filename(self._test_name, suffix) if self._filesystem.exists(expected_filename): _log.error('%s is both a reftest and has an expected output file %s.', self._test_name, expected_filename) def _expected_driver_output(self): return DriverOutput(self._port.expected_text(self._test_name), self._port.expected_image(self._test_name), self._port.expected_checksum(self._test_name), self._port.expected_audio(self._test_name)) def _should_fetch_expected_checksum(self): if not self._should_run_pixel_test: return False return (self._options.pixel_tests and not (self._options.new_baseline or self._options.reset_results)) def _driver_input(self): # The image hash is used to avoid doing an image dump if the # checksums match, so it should be set to a blank value if we # are generating a new baseline. (Otherwise, an image from a # previous run will be copied into the baseline.""" image_hash = None if self._should_fetch_expected_checksum(): image_hash = self._port.expected_checksum(self._test_name) return DriverInput(self._test_name, self._timeout, image_hash, bool(self._reference_files)) def run(self): if self._reference_files: if self._port.get_option('no_ref_tests') or self._options.new_baseline or self._options.reset_results: result = TestResult(self._test_name) result.type = test_expectations.SKIP return result return self._run_reftest() if self._options.new_baseline or self._options.reset_results: return self._run_rebaseline() return self._run_compare_test() def _run_compare_test(self): driver_output = self._driver.run_test(self._driver_input()) expected_driver_output = self._expected_driver_output() if self._options.ignore_metrics: expected_driver_output.strip_metrics() driver_output.strip_metrics() test_result = self._compare_output(driver_output, expected_driver_output) if self._options.new_test_results: self._add_missing_baselines(test_result, driver_output) test_result_writer.write_test_result(self._filesystem, self._port, self._test_name, driver_output, expected_driver_output, test_result.failures) return test_result def _run_rebaseline(self): driver_output = self._driver.run_test(self._driver_input()) failures = self._handle_error(driver_output) test_result_writer.write_test_result(self._filesystem, self._port, self._test_name, driver_output, None, failures) # FIXME: It the test crashed or timed out, it might be bettter to avoid # to write new baselines. self._overwrite_baselines(driver_output) return TestResult(self._test_name, failures, driver_output.test_time, driver_output.has_stderr()) _render_tree_dump_pattern = re.compile(r"^layer at \(\d+,\d+\) size \d+x\d+\n") def _add_missing_baselines(self, test_result, driver_output): missingImage = test_result.has_failure_matching_types(test_failures.FailureMissingImage, test_failures.FailureMissingImageHash) if test_result.has_failure_matching_types(test_failures.FailureMissingResult): self._save_baseline_data(driver_output.text, ".txt", SingleTestRunner._render_tree_dump_pattern.match(driver_output.text)) if test_result.has_failure_matching_types(test_failures.FailureMissingAudio): self._save_baseline_data(driver_output.audio, ".wav", generate_new_baseline=False) if missingImage: self._save_baseline_data(driver_output.image, ".png", generate_new_baseline=True) def _overwrite_baselines(self, driver_output): # Although all DumpRenderTree output should be utf-8, # we do not ever decode it inside run-webkit-tests. For some tests # DumpRenderTree may not output utf-8 text (e.g. webarchives). self._save_baseline_data(driver_output.text, ".txt", generate_new_baseline=self._options.new_baseline) self._save_baseline_data(driver_output.audio, ".wav", generate_new_baseline=self._options.new_baseline) if self._options.pixel_tests: self._save_baseline_data(driver_output.image, ".png", generate_new_baseline=self._options.new_baseline) def _save_baseline_data(self, data, modifier, generate_new_baseline=True): """Saves a new baseline file into the port's baseline directory. The file will be named simply "-expected", suitable for use as the expected results in a later run. Args: data: result to be saved as the new baseline modifier: type of the result file, e.g. ".txt" or ".png" generate_new_baseline: whether to enerate a new, platform-specific baseline, or update the existing one """ if data is None: return port = self._port fs = self._filesystem if generate_new_baseline: relative_dir = fs.dirname(self._test_name) baseline_path = port.baseline_path() output_dir = fs.join(baseline_path, relative_dir) output_file = fs.basename(fs.splitext(self._test_name)[0] + "-expected" + modifier) fs.maybe_make_directory(output_dir) output_path = fs.join(output_dir, output_file) else: output_path = port.expected_filename(self._test_name, modifier) result_name = fs.relpath(output_path, port.layout_tests_dir()) _log.info('Writing new expected result "%s"' % result_name) port.update_baseline(output_path, data) def _handle_error(self, driver_output, reference_filename=None): """Returns test failures if some unusual errors happen in driver's run. Args: driver_output: The output from the driver. reference_filename: The full path to the reference file which produced the driver_output. This arg is optional and should be used only in reftests until we have a better way to know which html file is used for producing the driver_output. """ failures = [] fs = self._filesystem if driver_output.timeout: failures.append(test_failures.FailureTimeout(bool(reference_filename))) if reference_filename: testname = self._port.relative_test_filename(reference_filename) else: testname = self._test_name if driver_output.crash: failures.append(test_failures.FailureCrash(bool(reference_filename), driver_output.crashed_process_name, driver_output.crashed_pid)) if driver_output.error: _log.debug("%s %s crashed, stack trace:" % (self._worker_name, testname)) else: _log.debug("%s %s crashed, no stack trace" % (self._worker_name, testname)) elif driver_output.error: _log.debug("%s %s output stderr lines:" % (self._worker_name, testname)) for line in driver_output.error.splitlines(): _log.debug(" %s" % line) return failures def _compare_output(self, driver_output, expected_driver_output): failures = [] failures.extend(self._handle_error(driver_output)) if driver_output.crash: # Don't continue any more if we already have a crash. # In case of timeouts, we continue since we still want to see the text and image output. return TestResult(self._test_name, failures, driver_output.test_time, driver_output.has_stderr()) failures.extend(self._compare_text(driver_output.text, expected_driver_output.text)) failures.extend(self._compare_audio(driver_output.audio, expected_driver_output.audio)) if self._options.pixel_tests: failures.extend(self._compare_image(driver_output, expected_driver_output)) return TestResult(self._test_name, failures, driver_output.test_time, driver_output.has_stderr()) def _compare_text(self, actual_text, expected_text): failures = [] if (expected_text and actual_text and # Assuming expected_text is already normalized. self._port.do_text_results_differ(self._get_normalized_output_text(actual_text), expected_text)): failures.append(test_failures.FailureTextMismatch()) elif actual_text and not expected_text: failures.append(test_failures.FailureMissingResult()) return failures def _compare_audio(self, actual_audio, expected_audio): failures = [] if (expected_audio and actual_audio and self._port.do_audio_results_differ(actual_audio, expected_audio)): failures.append(test_failures.FailureAudioMismatch()) elif actual_audio and not expected_audio: failures.append(test_failures.FailureMissingAudio()) return failures def _get_normalized_output_text(self, output): """Returns the normalized text output, i.e. the output in which the end-of-line characters are normalized to "\n".""" # Running tests on Windows produces "\r\n". The "\n" part is helpfully # changed to "\r\n" by our system (Python/Cygwin), resulting in # "\r\r\n", when, in fact, we wanted to compare the text output with # the normalized text expectation files. return output.replace("\r\r\n", "\r\n").replace("\r\n", "\n") # FIXME: This function also creates the image diff. Maybe that work should # be handled elsewhere? def _compare_image(self, driver_output, expected_driver_output): failures = [] # If we didn't produce a hash file, this test must be text-only. if driver_output.image_hash is None: return failures if not expected_driver_output.image: failures.append(test_failures.FailureMissingImage()) elif not expected_driver_output.image_hash: failures.append(test_failures.FailureMissingImageHash()) elif driver_output.image_hash != expected_driver_output.image_hash: diff_result = self._port.diff_image(driver_output.image, expected_driver_output.image) driver_output.image_diff = diff_result[0] if driver_output.image_diff: failures.append(test_failures.FailureImageHashMismatch(diff_result[1])) else: # See https://bugs.webkit.org/show_bug.cgi?id=69444 for why this isn't a full failure. _log.warning(' %s -> pixel hash failed (but pixel test still passes)' % self._test_name) return failures def _run_reftest(self): test_output = self._driver.run_test(self._driver_input()) total_test_time = 0 reference_output = None test_result = None # A reftest can have multiple match references and multiple mismatch references; # the test fails if any mismatch matches and all of the matches don't match. # To minimize the number of references we have to check, we run all of the mismatches first, # then the matches, and short-circuit out as soon as we can. # Note that sorting by the expectation sorts "!=" before "==" so this is easy to do. putAllMismatchBeforeMatch = sorted for expectation, reference_filename in putAllMismatchBeforeMatch(self._reference_files): reference_test_name = self._port.relative_test_filename(reference_filename) reference_output = self._driver.run_test(DriverInput(reference_test_name, self._timeout, test_output.image_hash, is_reftest=True)) test_result = self._compare_output_with_reference(test_output, reference_output, reference_filename, expectation == '!=') if (expectation == '!=' and test_result.failures) or (expectation == '==' and not test_result.failures): break total_test_time += test_result.test_run_time assert(reference_output) test_result_writer.write_test_result(self._filesystem, self._port, self._test_name, test_output, reference_output, test_result.failures) return TestResult(self._test_name, test_result.failures, total_test_time + test_result.test_run_time, test_result.has_stderr) def _compare_output_with_reference(self, driver_output1, driver_output2, reference_filename, mismatch): total_test_time = driver_output1.test_time + driver_output2.test_time has_stderr = driver_output1.has_stderr() or driver_output2.has_stderr() failures = [] failures.extend(self._handle_error(driver_output1)) if failures: # Don't continue any more if we already have crash or timeout. return TestResult(self._test_name, failures, total_test_time, has_stderr) failures.extend(self._handle_error(driver_output2, reference_filename=reference_filename)) if failures: return TestResult(self._test_name, failures, total_test_time, has_stderr) if not driver_output1.image_hash and not driver_output2.image_hash: failures.append(test_failures.FailureReftestNoImagesGenerated(reference_filename)) elif mismatch: if driver_output1.image_hash == driver_output2.image_hash: failures.append(test_failures.FailureReftestMismatchDidNotOccur(reference_filename)) elif driver_output1.image_hash != driver_output2.image_hash: failures.append(test_failures.FailureReftestMismatch(reference_filename)) return TestResult(self._test_name, failures, total_test_time, has_stderr)