472 lines
18 KiB
Python
472 lines
18 KiB
Python
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# Copyright 2017 The Abseil Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""A Python test reporter that generates test reports in JUnit XML format."""
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from __future__ import absolute_import
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from __future__ import division
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from __future__ import print_function
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import re
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import sys
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import threading
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import time
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import traceback
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import unittest
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from xml.sax import saxutils
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from absl.testing import _pretty_print_reporter
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import six
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# See http://www.w3.org/TR/REC-xml/#NT-Char
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_bad_control_character_codes = set(range(0, 0x20)) - {0x9, 0xA, 0xD}
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_control_character_conversions = {
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chr(i): '\\x{:02x}'.format(i) for i in _bad_control_character_codes}
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_escape_xml_attr_conversions = {
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'"': '"',
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"'": ''',
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'\n': '
',
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'\t': '	',
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'\r': '
',
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' ': ' '}
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_escape_xml_attr_conversions.update(_control_character_conversions)
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# When class or module level function fails, unittest/suite.py adds a
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# _ErrorHolder instance instead of a real TestCase, and it has a description
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# like "setUpClass (__main__.MyTestCase)".
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_CLASS_OR_MODULE_LEVEL_TEST_DESC_REGEX = re.compile(r'^(\w+) \((\S+)\)$')
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# NOTE: while saxutils.quoteattr() theoretically does the same thing; it
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# seems to often end up being too smart for it's own good not escaping properly.
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# This function is much more reliable.
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def _escape_xml_attr(content):
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"""Escapes xml attributes."""
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# Note: saxutils doesn't escape the quotes.
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return saxutils.escape(content, _escape_xml_attr_conversions)
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def _escape_cdata(s):
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"""Escapes a string to be used as XML CDATA.
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CDATA characters are treated strictly as character data, not as XML markup,
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but there are still certain restrictions on them.
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Args:
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s: the string to be escaped.
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Returns:
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An escaped version of the input string.
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"""
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for char, escaped in six.iteritems(_control_character_conversions):
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s = s.replace(char, escaped)
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return s.replace(']]>', ']] >')
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# Copy time.time which ensures the real time is used internally.
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# This prevents bad interactions with tests that stub out time.
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_time_copy = time.time
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if hasattr(traceback, '_some_str'):
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# Use the traceback module str function to format safely.
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_safe_str = traceback._some_str
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else:
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_safe_str = str # pylint: disable=invalid-name
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class _TestCaseResult(object):
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"""Private helper for _TextAndXMLTestResult that represents a test result.
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Attributes:
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test: A TestCase instance of an individual test method.
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name: The name of the individual test method.
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full_class_name: The full name of the test class.
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run_time: The duration (in seconds) it took to run the test.
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errors: A list of error 4-tuples. Error tuple entries are
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1) a string identifier of either "failure" or "error"
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2) an exception_type
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3) an exception_message
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4) a string version of a sys.exc_info()-style tuple of values
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('error', err[0], err[1], self._exc_info_to_string(err))
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If the length of errors is 0, then the test is either passed or
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skipped.
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skip_reason: A string explaining why the test was skipped.
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"""
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def __init__(self, test):
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self.run_time = -1
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self.skip_reason = None
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self.errors = []
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self.test = test
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# Parse the test id to get its test name and full class path.
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# Unfortunately there is no better way of knowning the test and class.
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# Worse, unittest uses _ErrorHandler instances to represent class / module
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# level failures.
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test_desc = test.id() or str(test)
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# Check if it's something like "setUpClass (__main__.TestCase)".
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match = _CLASS_OR_MODULE_LEVEL_TEST_DESC_REGEX.match(test_desc)
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if match:
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name = match.group(1)
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full_class_name = match.group(2)
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else:
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class_name = unittest.util.strclass(test.__class__)
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if six.PY3 and isinstance(test, unittest.case._SubTest):
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# subtest is introduced in Python3
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# If the test case is a _SubTest, the real TestCase instance is
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# available as _SubTest.test_case.
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class_name = unittest.util.strclass(test.test_case.__class__)
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if test_desc.startswith(class_name + '.'):
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# In a typical unittest.TestCase scenario, test.id() returns with
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# a class name formatted using unittest.util.strclass.
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name = test_desc[len(class_name)+1:]
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full_class_name = class_name
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else:
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# Otherwise make a best effort to guess the test name and full class
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# path.
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parts = test_desc.rsplit('.', 1)
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name = parts[-1]
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full_class_name = parts[0] if len(parts) == 2 else ''
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self.name = _escape_xml_attr(name)
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self.full_class_name = _escape_xml_attr(full_class_name)
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def set_run_time(self, time_in_secs):
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self.run_time = time_in_secs
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def print_xml_summary(self, stream):
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"""Prints an XML Summary of a TestCase.
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Status and result are populated as per JUnit XML test result reporter.
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A test that has been skipped will always have a skip reason,
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as every skip method in Python's unittest requires the reason arg to be
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passed.
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Args:
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stream: output stream to write test report XML to
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"""
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if self.skip_reason is None:
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status = 'run'
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result = 'completed'
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else:
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status = 'notrun'
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result = 'suppressed'
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stream.write(
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' <testcase name="%s" status="%s" result="%s" time="%.1f" '
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'classname="%s">\n' % (
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self.name, status, result, self.run_time, self.full_class_name))
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self._print_testcase_details(stream)
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stream.write(' </testcase>\n')
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def _print_testcase_details(self, stream):
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for error in self.errors:
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outcome, exception_type, message, error_msg = error # pylint: disable=unpacking-non-sequence
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message = _escape_xml_attr(_safe_str(message))
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exception_type = _escape_xml_attr(str(exception_type))
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error_msg = _escape_cdata(error_msg)
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stream.write(' <%s message="%s" type="%s"><![CDATA[%s]]></%s>\n'
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% (outcome, message, exception_type, error_msg, outcome))
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class _TestSuiteResult(object):
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"""Private helper for _TextAndXMLTestResult."""
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def __init__(self):
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self.suites = {}
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self.failure_counts = {}
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self.error_counts = {}
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def add_test_case_result(self, test_case_result):
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suite_name = type(test_case_result.test).__name__
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if suite_name == '_ErrorHolder':
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# _ErrorHolder is a special case created by unittest for class / module
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# level functions.
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suite_name = test_case_result.full_class_name.rsplit('.')[-1]
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if six.PY3 and isinstance(test_case_result.test, unittest.case._SubTest):
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# subTest is introduced in Python3.
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# If the test case is a _SubTest, the real TestCase instance is
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# available as _SubTest.test_case.
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suite_name = type(test_case_result.test.test_case).__name__
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self._setup_test_suite(suite_name)
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self.suites[suite_name].append(test_case_result)
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for error in test_case_result.errors:
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# Only count the first failure or error so that the sum is equal to the
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# total number of *testcases* that have failures or errors.
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if error[0] == 'failure':
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self.failure_counts[suite_name] += 1
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break
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elif error[0] == 'error':
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self.error_counts[suite_name] += 1
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break
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def print_xml_summary(self, stream):
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overall_test_count = sum([len(x) for x in self.suites.values()])
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overall_failures = sum(self.failure_counts.values())
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overall_errors = sum(self.error_counts.values())
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overall_time = 0
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for tests in self.suites.values():
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overall_time += sum([x.run_time for x in tests])
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overall_args = (overall_test_count, overall_failures, overall_errors,
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overall_time)
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stream.write('<testsuites name="" tests="%d" failures="%d" '
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'errors="%d" time="%.1f">\n' % overall_args)
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for suite_name in self.suites:
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suite = self.suites[suite_name]
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suite_time = sum([x.run_time for x in suite])
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failures = self.failure_counts[suite_name]
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errors = self.error_counts[suite_name]
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args = (suite_name, len(suite), failures, errors, suite_time)
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stream.write('<testsuite name="%s" tests="%d" failures="%d" '
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'errors="%d" time="%.1f">\n' % args)
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for test_case_result in suite:
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test_case_result.print_xml_summary(stream)
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stream.write('</testsuite>\n')
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stream.write('</testsuites>\n')
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def _setup_test_suite(self, suite_name):
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"""Adds a test suite to the set of suites tracked by this test run.
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Args:
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suite_name: string, The name of the test suite being initialized.
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"""
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if suite_name in self.suites:
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return
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self.suites[suite_name] = []
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self.failure_counts[suite_name] = 0
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self.error_counts[suite_name] = 0
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class _TextAndXMLTestResult(_pretty_print_reporter.TextTestResult):
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"""Private TestResult class that produces both formatted text results and XML.
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Used by TextAndXMLTestRunner.
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"""
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_TEST_SUITE_RESULT_CLASS = _TestSuiteResult
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_TEST_CASE_RESULT_CLASS = _TestCaseResult
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def __init__(self, xml_stream, stream, descriptions, verbosity,
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time_getter=_time_copy):
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super(_TextAndXMLTestResult, self).__init__(stream, descriptions, verbosity)
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self.xml_stream = xml_stream
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self.pending_test_case_results = {}
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self.suite = self._TEST_SUITE_RESULT_CLASS()
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self.time_getter = time_getter
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# This lock guards any mutations on pending_test_case_results.
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self._pending_test_case_results_lock = threading.RLock()
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def startTest(self, test):
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self.start_time = self.time_getter()
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super(_TextAndXMLTestResult, self).startTest(test)
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def stopTest(self, test):
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# Grabbing the write lock to avoid conflicting with stopTestRun.
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with self._pending_test_case_results_lock:
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super(_TextAndXMLTestResult, self).stopTest(test)
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result = self.get_pending_test_case_result(test)
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if not result:
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test_name = test.id() or str(test)
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sys.stderr.write('No pending test case: %s\n' % test_name)
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return
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test_id = id(test)
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run_time = self.time_getter() - self.start_time
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result.set_run_time(run_time)
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self.suite.add_test_case_result(result)
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del self.pending_test_case_results[test_id]
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def stopTestRun(self):
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# All pending_test_case_results will be added to the suite and removed from
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# the pending_test_case_results dictionary. Grabing the write lock to avoid
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# results from being added during this process to avoid duplicating adds or
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# accidentally erasing newly appended pending results.
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with self._pending_test_case_results_lock:
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# Errors in the test fixture (setUpModule, tearDownModule,
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# setUpClass, tearDownClass) can leave a pending result which
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# never gets added to the suite. The runner calls stopTestRun
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# which gives us an opportunity to add these errors for
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# reporting here.
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for test_id in self.pending_test_case_results:
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result = self.pending_test_case_results[test_id]
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if hasattr(self, 'start_time'):
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run_time = self.time_getter() - self.start_time
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result.set_run_time(run_time)
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self.suite.add_test_case_result(result)
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self.pending_test_case_results.clear()
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def _exc_info_to_string(self, err, test=None):
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"""Converts a sys.exc_info()-style tuple of values into a string.
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This method must be overridden because the method signature in
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unittest.TestResult changed between Python 2.2 and 2.4.
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Args:
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err: A sys.exc_info() tuple of values for an error.
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test: The test method.
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Returns:
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A formatted exception string.
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"""
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if test:
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return super(_TextAndXMLTestResult, self)._exc_info_to_string(err, test)
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return ''.join(traceback.format_exception(*err))
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def add_pending_test_case_result(self, test, error_summary=None,
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skip_reason=None):
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"""Adds result information to a test case result which may still be running.
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If a result entry for the test already exists, add_pending_test_case_result
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will add error summary tuples and/or overwrite skip_reason for the result.
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If it does not yet exist, a result entry will be created.
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Note that a test result is considered to have been run and passed
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only if there are no errors or skip_reason.
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Args:
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test: A test method as defined by unittest
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error_summary: A 4-tuple with the following entries:
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1) a string identifier of either "failure" or "error"
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2) an exception_type
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3) an exception_message
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4) a string version of a sys.exc_info()-style tuple of values
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||
|
|
('error', err[0], err[1], self._exc_info_to_string(err))
|
||
|
|
If the length of errors is 0, then the test is either passed or
|
||
|
|
skipped.
|
||
|
|
skip_reason: a string explaining why the test was skipped
|
||
|
|
"""
|
||
|
|
with self._pending_test_case_results_lock:
|
||
|
|
test_id = id(test)
|
||
|
|
if test_id not in self.pending_test_case_results:
|
||
|
|
self.pending_test_case_results[test_id] = self._TEST_CASE_RESULT_CLASS(
|
||
|
|
test)
|
||
|
|
if error_summary:
|
||
|
|
self.pending_test_case_results[test_id].errors.append(error_summary)
|
||
|
|
if skip_reason:
|
||
|
|
self.pending_test_case_results[test_id].skip_reason = skip_reason
|
||
|
|
|
||
|
|
def delete_pending_test_case_result(self, test):
|
||
|
|
with self._pending_test_case_results_lock:
|
||
|
|
test_id = id(test)
|
||
|
|
del self.pending_test_case_results[test_id]
|
||
|
|
|
||
|
|
def get_pending_test_case_result(self, test):
|
||
|
|
test_id = id(test)
|
||
|
|
return self.pending_test_case_results.get(test_id, None)
|
||
|
|
|
||
|
|
def addSuccess(self, test):
|
||
|
|
super(_TextAndXMLTestResult, self).addSuccess(test)
|
||
|
|
self.add_pending_test_case_result(test)
|
||
|
|
|
||
|
|
def addError(self, test, err):
|
||
|
|
super(_TextAndXMLTestResult, self).addError(test, err)
|
||
|
|
error_summary = ('error', err[0], err[1], self._exc_info_to_string(err))
|
||
|
|
self.add_pending_test_case_result(test, error_summary=error_summary)
|
||
|
|
|
||
|
|
def addFailure(self, test, err):
|
||
|
|
super(_TextAndXMLTestResult, self).addFailure(test, err)
|
||
|
|
error_summary = ('failure', err[0], err[1], self._exc_info_to_string(err))
|
||
|
|
self.add_pending_test_case_result(test, error_summary=error_summary)
|
||
|
|
|
||
|
|
def addSkip(self, test, reason):
|
||
|
|
super(_TextAndXMLTestResult, self).addSkip(test, reason)
|
||
|
|
self.add_pending_test_case_result(test, skip_reason=reason)
|
||
|
|
|
||
|
|
def addExpectedFailure(self, test, err):
|
||
|
|
super(_TextAndXMLTestResult, self).addExpectedFailure(test, err)
|
||
|
|
if callable(getattr(test, 'recordProperty', None)):
|
||
|
|
test.recordProperty('EXPECTED_FAILURE', self._exc_info_to_string(err))
|
||
|
|
self.add_pending_test_case_result(test)
|
||
|
|
|
||
|
|
def addUnexpectedSuccess(self, test):
|
||
|
|
super(_TextAndXMLTestResult, self).addUnexpectedSuccess(test)
|
||
|
|
test_name = test.id() or str(test)
|
||
|
|
error_summary = ('error', '', '',
|
||
|
|
'Test case %s should have failed, but passed.'
|
||
|
|
% (test_name))
|
||
|
|
self.add_pending_test_case_result(test, error_summary=error_summary)
|
||
|
|
|
||
|
|
def addSubTest(self, test, subtest, err): # pylint: disable=invalid-name
|
||
|
|
super(_TextAndXMLTestResult, self).addSubTest(test, subtest, err)
|
||
|
|
if err is not None:
|
||
|
|
if issubclass(err[0], test.failureException):
|
||
|
|
error_summary = ('failure', err[0], err[1],
|
||
|
|
self._exc_info_to_string(err))
|
||
|
|
else:
|
||
|
|
error_summary = ('error', err[0], err[1],
|
||
|
|
self._exc_info_to_string(err))
|
||
|
|
else:
|
||
|
|
error_summary = None
|
||
|
|
self.add_pending_test_case_result(subtest, error_summary=error_summary)
|
||
|
|
|
||
|
|
def printErrors(self):
|
||
|
|
super(_TextAndXMLTestResult, self).printErrors()
|
||
|
|
self.xml_stream.write('<?xml version="1.0"?>\n')
|
||
|
|
self.suite.print_xml_summary(self.xml_stream)
|
||
|
|
|
||
|
|
|
||
|
|
class TextAndXMLTestRunner(unittest.TextTestRunner):
|
||
|
|
"""A test runner that produces both formatted text results and XML.
|
||
|
|
|
||
|
|
It prints out the names of tests as they are run, errors as they
|
||
|
|
occur, and a summary of the results at the end of the test run.
|
||
|
|
"""
|
||
|
|
|
||
|
|
_TEST_RESULT_CLASS = _TextAndXMLTestResult
|
||
|
|
|
||
|
|
_xml_stream = None
|
||
|
|
|
||
|
|
def __init__(self, xml_stream=None, *args, **kwargs):
|
||
|
|
"""Initialize a TextAndXMLTestRunner.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
xml_stream: file-like or None; XML-formatted test results are output
|
||
|
|
via this object's write() method. If None (the default), the
|
||
|
|
new instance behaves as described in the set_default_xml_stream method
|
||
|
|
documentation below.
|
||
|
|
*args: passed unmodified to unittest.TextTestRunner.__init__.
|
||
|
|
**kwargs: passed unmodified to unittest.TextTestRunner.__init__.
|
||
|
|
"""
|
||
|
|
super(TextAndXMLTestRunner, self).__init__(*args, **kwargs)
|
||
|
|
if xml_stream is not None:
|
||
|
|
self._xml_stream = xml_stream
|
||
|
|
# else, do not set self._xml_stream to None -- this allows implicit fallback
|
||
|
|
# to the class attribute's value.
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def set_default_xml_stream(cls, xml_stream):
|
||
|
|
"""Sets the default XML stream for the class.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
xml_stream: file-like or None; used for instances when xml_stream is None
|
||
|
|
or not passed to their constructors. If None is passed, instances
|
||
|
|
created with xml_stream=None will act as ordinary TextTestRunner
|
||
|
|
instances; this is the default state before any calls to this method
|
||
|
|
have been made.
|
||
|
|
"""
|
||
|
|
cls._xml_stream = xml_stream
|
||
|
|
|
||
|
|
def _makeResult(self):
|
||
|
|
if self._xml_stream is None:
|
||
|
|
return super(TextAndXMLTestRunner, self)._makeResult()
|
||
|
|
else:
|
||
|
|
return self._TEST_RESULT_CLASS(self._xml_stream, self.stream,
|
||
|
|
self.descriptions, self.verbosity)
|