1 """Test result object"""
7 from StringIO import StringIO
9 from unittest2 import util
10 from unittest2.compatibility import wraps
16 def inner(self, *args, **kw):
17 if getattr(self, 'failfast', False):
19 return method(self, *args, **kw)
23 STDOUT_LINE = '\nStdout:\n%s'
24 STDERR_LINE = '\nStderr:\n%s'
26 class TestResult(unittest.TestResult):
27 """Holder for test result information.
29 Test results are automatically managed by the TestCase and TestSuite
30 classes, and do not need to be explicitly manipulated by writers of tests.
32 Each instance holds the total number of tests run, and collections of
33 failures and errors that occurred among those test runs. The collections
34 contain tuples of (testcase, exceptioninfo), where exceptioninfo is the
35 formatted traceback of the error that occurred.
37 _previousTestClass = None
38 _moduleSetUpFailed = False
46 self.expectedFailures = []
47 self.unexpectedSuccesses = []
48 self.shouldStop = False
50 self._stdout_buffer = None
51 self._stderr_buffer = None
52 self._original_stdout = sys.stdout
53 self._original_stderr = sys.stderr
54 self._mirrorOutput = False
56 def startTest(self, test):
57 "Called when the given test is about to be run"
59 self._mirrorOutput = False
61 if self._stderr_buffer is None:
62 self._stderr_buffer = StringIO()
63 self._stdout_buffer = StringIO()
64 sys.stdout = self._stdout_buffer
65 sys.stderr = self._stderr_buffer
67 def startTestRun(self):
68 """Called once before any tests are executed.
70 See startTest for a method called before each test.
73 def stopTest(self, test):
74 """Called when the given test has been run"""
76 if self._mirrorOutput:
77 output = sys.stdout.getvalue()
78 error = sys.stderr.getvalue()
80 if not output.endswith('\n'):
82 self._original_stdout.write(STDOUT_LINE % output)
84 if not error.endswith('\n'):
86 self._original_stderr.write(STDERR_LINE % error)
88 sys.stdout = self._original_stdout
89 sys.stderr = self._original_stderr
90 self._stdout_buffer.seek(0)
91 self._stdout_buffer.truncate()
92 self._stderr_buffer.seek(0)
93 self._stderr_buffer.truncate()
94 self._mirrorOutput = False
97 def stopTestRun(self):
98 """Called once after all tests are executed.
100 See stopTest for a method called after each test.
104 def addError(self, test, err):
105 """Called when an error has occurred. 'err' is a tuple of values as
106 returned by sys.exc_info().
108 self.errors.append((test, self._exc_info_to_string(err, test)))
109 self._mirrorOutput = True
112 def addFailure(self, test, err):
113 """Called when an error has occurred. 'err' is a tuple of values as
114 returned by sys.exc_info()."""
115 self.failures.append((test, self._exc_info_to_string(err, test)))
116 self._mirrorOutput = True
118 def addSuccess(self, test):
119 "Called when a test has completed successfully"
122 def addSkip(self, test, reason):
123 """Called when a test is skipped."""
124 self.skipped.append((test, reason))
126 def addExpectedFailure(self, test, err):
127 """Called when an expected failure/error occured."""
128 self.expectedFailures.append(
129 (test, self._exc_info_to_string(err, test)))
132 def addUnexpectedSuccess(self, test):
133 """Called when a test was expected to fail, but succeed."""
134 self.unexpectedSuccesses.append(test)
136 def wasSuccessful(self):
137 "Tells whether or not this result was a success"
138 return (len(self.failures) + len(self.errors) == 0)
141 "Indicates that the tests should be aborted"
142 self.shouldStop = True
144 def _exc_info_to_string(self, err, test):
145 """Converts a sys.exc_info()-style tuple of values into a string."""
146 exctype, value, tb = err
147 # Skip test runner traceback levels
148 while tb and self._is_relevant_tb_level(tb):
150 if exctype is test.failureException:
151 # Skip assert*() traceback levels
152 length = self._count_relevant_tb_levels(tb)
153 msgLines = traceback.format_exception(exctype, value, tb, length)
155 msgLines = traceback.format_exception(exctype, value, tb)
158 output = sys.stdout.getvalue()
159 error = sys.stderr.getvalue()
161 if not output.endswith('\n'):
163 msgLines.append(STDOUT_LINE % output)
165 if not error.endswith('\n'):
167 msgLines.append(STDERR_LINE % error)
168 return ''.join(msgLines)
170 def _is_relevant_tb_level(self, tb):
171 return '__unittest' in tb.tb_frame.f_globals
173 def _count_relevant_tb_levels(self, tb):
175 while tb and not self._is_relevant_tb_level(tb):
181 return "<%s run=%i errors=%i failures=%i>" % \
182 (util.strclass(self.__class__), self.testsRun, len(self.errors),