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1643
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lib
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python3.12
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unittest
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runner.py
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"""Running tests""" import sys import time import warnings from . import result from .case import _SubTest from .signals import registerResult __unittest = True class _WritelnDecorator(object): """Used to decorate file-like objects with a handy 'writeln' method""" def __init__(self,stream): self.stream = stream def __getattr__(self, attr): if attr in ('stream', '__getstate__'): raise AttributeError(attr) return getattr(self.stream,attr) def writeln(self, arg=None): if arg: self.write(arg) self.write('\n') # text-mode streams translate to \r\n if needed class TextTestResult(result.TestResult): """A test result class that can print formatted text results to a stream. Used by TextTestRunner. """ separator1 = '=' * 70 separator2 = '-' * 70 def __init__(self, stream, descriptions, verbosity, *, durations=None): """Construct a TextTestResult. Subclasses should accept **kwargs to ensure compatibility as the interface changes.""" super(TextTestResult, self).__init__(stream, descriptions, verbosity) self.stream = stream self.showAll = verbosity > 1 self.dots = verbosity == 1 self.descriptions = descriptions self._newline = True self.durations = durations def getDescription(self, test): doc_first_line = test.shortDescription() if self.descriptions and doc_first_line: return '\n'.join((str(test), doc_first_line)) else: return str(test) def startTest(self, test): super(TextTestResult, self).startTest(test) if self.showAll: self.stream.write(self.getDescription(test)) self.stream.write(" ... ") self.stream.flush() self._newline = False def _write_status(self, test, status): is_subtest = isinstance(test, _SubTest) if is_subtest or self._newline: if not self._newline: self.stream.writeln() if is_subtest: self.stream.write(" ") self.stream.write(self.getDescription(test)) self.stream.write(" ... ") self.stream.writeln(status) self.stream.flush() self._newline = True def addSubTest(self, test, subtest, err): if err is not None: if self.showAll: if issubclass(err[0], subtest.failureException): self._write_status(subtest, "FAIL") else: self._write_status(subtest, "ERROR") elif self.dots: if issubclass(err[0], subtest.failureException): self.stream.write('F') else: self.stream.write('E') self.stream.flush() super(TextTestResult, self).addSubTest(test, subtest, err) def addSuccess(self, test): super(TextTestResult, self).addSuccess(test) if self.showAll: self._write_status(test, "ok") elif self.dots: self.stream.write('.') self.stream.flush() def addError(self, test, err): super(TextTestResult, self).addError(test, err) if self.showAll: self._write_status(test, "ERROR") elif self.dots: self.stream.write('E') self.stream.flush() def addFailure(self, test, err): super(TextTestResult, self).addFailure(test, err) if self.showAll: self._write_status(test, "FAIL") elif self.dots: self.stream.write('F') self.stream.flush() def addSkip(self, test, reason): super(TextTestResult, self).addSkip(test, reason) if self.showAll: self._write_status(test, "skipped {0!r}".format(reason)) elif self.dots: self.stream.write("s") self.stream.flush() def addExpectedFailure(self, test, err): super(TextTestResult, self).addExpectedFailure(test, err) if self.showAll: self.stream.writeln("expected failure") self.stream.flush() elif self.dots: self.stream.write("x") self.stream.flush() def addUnexpectedSuccess(self, test): super(TextTestResult, self).addUnexpectedSuccess(test) if self.showAll: self.stream.writeln("unexpected success") self.stream.flush() elif self.dots: self.stream.write("u") self.stream.flush() def printErrors(self): if self.dots or self.showAll: self.stream.writeln() self.stream.flush() self.printErrorList('ERROR', self.errors) self.printErrorList('FAIL', self.failures) unexpectedSuccesses = getattr(self, 'unexpectedSuccesses', ()) if unexpectedSuccesses: self.stream.writeln(self.separator1) for test in unexpectedSuccesses: self.stream.writeln(f"UNEXPECTED SUCCESS: {self.getDescription(test)}") self.stream.flush() def printErrorList(self, flavour, errors): for test, err in errors: self.stream.writeln(self.separator1) self.stream.writeln("%s: %s" % (flavour,self.getDescription(test))) self.stream.writeln(self.separator2) self.stream.writeln("%s" % err) self.stream.flush() class TextTestRunner(object): """A test runner class that displays results in textual form. 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. """ resultclass = TextTestResult def __init__(self, stream=None, descriptions=True, verbosity=1, failfast=False, buffer=False, resultclass=None, warnings=None, *, tb_locals=False, durations=None): """Construct a TextTestRunner. Subclasses should accept **kwargs to ensure compatibility as the interface changes. """ if stream is None: stream = sys.stderr self.stream = _WritelnDecorator(stream) self.descriptions = descriptions self.verbosity = verbosity self.failfast = failfast self.buffer = buffer self.tb_locals = tb_locals self.durations = durations self.warnings = warnings if resultclass is not None: self.resultclass = resultclass def _makeResult(self): try: return self.resultclass(self.stream, self.descriptions, self.verbosity, durations=self.durations) except TypeError: # didn't accept the durations argument return self.resultclass(self.stream, self.descriptions, self.verbosity) def _printDurations(self, result): if not result.collectedDurations: return ls = sorted(result.collectedDurations, key=lambda x: x[1], reverse=True) if self.durations > 0: ls = ls[:self.durations] self.stream.writeln("Slowest test durations") if hasattr(result, 'separator2'): self.stream.writeln(result.separator2) hidden = False for test, elapsed in ls: if self.verbosity < 2 and elapsed < 0.001: hidden = True continue self.stream.writeln("%-10s %s" % ("%.3fs" % elapsed, test)) if hidden: self.stream.writeln("\n(durations < 0.001s were hidden; " "use -v to show these durations)") else: self.stream.writeln("") def run(self, test): "Run the given test case or test suite." result = self._makeResult() registerResult(result) result.failfast = self.failfast result.buffer = self.buffer result.tb_locals = self.tb_locals with warnings.catch_warnings(): if self.warnings: # if self.warnings is set, use it to filter all the warnings warnings.simplefilter(self.warnings) startTime = time.perf_counter() startTestRun = getattr(result, 'startTestRun', None) if startTestRun is not None: startTestRun() try: test(result) finally: stopTestRun = getattr(result, 'stopTestRun', None) if stopTestRun is not None: stopTestRun() stopTime = time.perf_counter() timeTaken = stopTime - startTime result.printErrors() if self.durations is not None: self._printDurations(result) if hasattr(result, 'separator2'): self.stream.writeln(result.separator2) run = result.testsRun self.stream.writeln("Ran %d test%s in %.3fs" % (run, run != 1 and "s" or "", timeTaken)) self.stream.writeln() expectedFails = unexpectedSuccesses = skipped = 0 try: results = map(len, (result.expectedFailures, result.unexpectedSuccesses, result.skipped)) except AttributeError: pass else: expectedFails, unexpectedSuccesses, skipped = results infos = [] if not result.wasSuccessful(): self.stream.write("FAILED") failed, errored = len(result.failures), len(result.errors) if failed: infos.append("failures=%d" % failed) if errored: infos.append("errors=%d" % errored) elif run == 0 and not skipped: self.stream.write("NO TESTS RAN") else: self.stream.write("OK") if skipped: infos.append("skipped=%d" % skipped) if expectedFails: infos.append("expected failures=%d" % expectedFails) if unexpectedSuccesses: infos.append("unexpected successes=%d" % unexpectedSuccesses) if infos: self.stream.writeln(" (%s)" % (", ".join(infos),)) else: self.stream.write("\n") self.stream.flush() return result