| # 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. |
| |
| |
| class ExpectedFailures(object): |
| def __init__(self): |
| self._failures = set() |
| self._is_trustworthy = True |
| |
| @classmethod |
| def _has_failures(cls, results): |
| return bool(results and results.failing_tests()) |
| |
| @classmethod |
| def _should_trust(cls, results): |
| return bool(cls._has_failures(results) and results.failure_limit_count() and len(results.failing_tests()) < results.failure_limit_count()) |
| |
| def failures_were_expected(self, results): |
| if not self._is_trustworthy: |
| return False |
| if not self._should_trust(results): |
| return False |
| return set(results.failing_tests()) <= self._failures |
| |
| def unexpected_failures_observed(self, results): |
| if not self._is_trustworthy: |
| return None |
| if not self._has_failures(results): |
| return None |
| return set(results.failing_tests()) - self._failures |
| |
| def update(self, results): |
| if results: |
| self._failures = set(results.failing_tests()) |
| self._is_trustworthy = self._should_trust(results) |
