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unittest
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main.py
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"""Unittest main program""" import sys import argparse import os from . import loader, runner from .signals import installHandler __unittest = True MAIN_EXAMPLES = """\ Examples: %(prog)s test_module - run tests from test_module %(prog)s module.TestClass - run tests from module.TestClass %(prog)s module.Class.test_method - run specified test method %(prog)s path/to/test_file.py - run tests from test_file.py """ MODULE_EXAMPLES = """\ Examples: %(prog)s - run default set of tests %(prog)s MyTestSuite - run suite 'MyTestSuite' %(prog)s MyTestCase.testSomething - run MyTestCase.testSomething %(prog)s MyTestCase - run all 'test*' test methods in MyTestCase """ def _convert_name(name): # on Linux / Mac OS X 'foo.PY' is not importable, but on # Windows it is. Simpler to do a case insensitive match # a better check would be to check that the name is a # valid Python module name. if os.path.isfile(name) and name.lower().endswith('.py'): if os.path.isabs(name): rel_path = os.path.relpath(name, os.getcwd()) if os.path.isabs(rel_path) or rel_path.startswith(os.pardir): return name name = rel_path # on Windows both '\' and '/' are used as path # separators. Better to replace both than rely on os.path.sep return name[:-3].replace('\\', '.').replace('/', '.') return name def _convert_names(names): return [_convert_name(name) for name in names] class TestProgram(object): """A command-line program that runs a set of tests; this is primarily for making test modules conveniently executable. """ # defaults for testing module=None verbosity = 1 failfast = catchbreak = buffer = progName = warnings = None _discovery_parser = None def __init__(self, module='__main__', defaultTest=None, argv=None, testRunner=None, testLoader=loader.defaultTestLoader, exit=True, verbosity=1, failfast=None, catchbreak=None, buffer=None, warnings=None, *, tb_locals=False): if isinstance(module, str): self.module = __import__(module) for part in module.split('.')[1:]: self.module = getattr(self.module, part) else: self.module = module if argv is None: argv = sys.argv self.exit = exit self.failfast = failfast self.catchbreak = catchbreak self.verbosity = verbosity self.buffer = buffer self.tb_locals = tb_locals if warnings is None and not sys.warnoptions: # even if DeprecationWarnings are ignored by default # print them anyway unless other warnings settings are # specified by the warnings arg or the -W python flag self.warnings = 'default' else: # here self.warnings is set either to the value passed # to the warnings args or to None. # If the user didn't pass a value self.warnings will # be None. This means that the behavior is unchanged # and depends on the values passed to -W. self.warnings = warnings self.defaultTest = defaultTest self.testRunner = testRunner self.testLoader = testLoader self.progName = os.path.basename(argv[0]) self.parseArgs(argv) self.runTests() def usageExit(self, msg=None): if msg: print(msg) if self._discovery_parser is None: self._initArgParsers() self._print_help() sys.exit(2) def _print_help(self, *args, **kwargs): if self.module is None: print(self._main_parser.format_help()) print(MAIN_EXAMPLES % {'prog': self.progName}) self._discovery_parser.print_help() else: print(self._main_parser.format_help()) print(MODULE_EXAMPLES % {'prog': self.progName}) def parseArgs(self, argv): self._initArgParsers() if self.module is None: if len(argv) > 1 and argv[1].lower() == 'discover': self._do_discovery(argv[2:]) return self._main_parser.parse_args(argv[1:], self) if not self.tests: # this allows "python -m unittest -v" to still work for # test discovery. self._do_discovery([]) return else: self._main_parser.parse_args(argv[1:], self) if self.tests: self.testNames = _convert_names(self.tests) if __name__ == '__main__': # to support python -m unittest ... self.module = None elif self.defaultTest is None: # createTests will load tests from self.module self.testNames = None elif isinstance(self.defaultTest, str): self.testNames = (self.defaultTest,) else: self.testNames = list(self.defaultTest) self.createTests() def createTests(self): if self.testNames is None: self.test = self.testLoader.loadTestsFromModule(self.module) else: self.test = self.testLoader.loadTestsFromNames(self.testNames, self.module) def _initArgParsers(self): parent_parser = self._getParentArgParser() self._main_parser = self._getMainArgParser(parent_parser) self._discovery_parser = self._getDiscoveryArgParser(parent_parser) def _getParentArgParser(self): parser = argparse.ArgumentParser(add_help=False) parser.add_argument('-v', '--verbose', dest='verbosity', action='store_const', const=2, help='Verbose output') parser.add_argument('-q', '--quiet', dest='verbosity', action='store_const', const=0, help='Quiet output') parser.add_argument('--locals', dest='tb_locals', action='store_true', help='Show local variables in tracebacks') if self.failfast is None: parser.add_argument('-f', '--failfast', dest='failfast', action='store_true', help='Stop on first fail or error') self.failfast = False if self.catchbreak is None: parser.add_argument('-c', '--catch', dest='catchbreak', action='store_true', help='Catch Ctrl-C and display results so far') self.catchbreak = False if self.buffer is None: parser.add_argument('-b', '--buffer', dest='buffer', action='store_true', help='Buffer stdout and stderr during tests') self.buffer = False return parser def _getMainArgParser(self, parent): parser = argparse.ArgumentParser(parents=[parent]) parser.prog = self.progName parser.print_help = self._print_help parser.add_argument('tests', nargs='*', help='a list of any number of test modules, ' 'classes and test methods.') return parser def _getDiscoveryArgParser(self, parent): parser = argparse.ArgumentParser(parents=[parent]) parser.prog = '%s discover' % self.progName parser.epilog = ('For test discovery all test modules must be ' 'importable from the top level directory of the ' 'project.') parser.add_argument('-s', '--start-directory', dest='start', help="Directory to start discovery ('.' default)") parser.add_argument('-p', '--pattern', dest='pattern', help="Pattern to match tests ('test*.py' default)") parser.add_argument('-t', '--top-level-directory', dest='top', help='Top level directory of project (defaults to ' 'start directory)') for arg in ('start', 'pattern', 'top'): parser.add_argument(arg, nargs='?', default=argparse.SUPPRESS, help=argparse.SUPPRESS) return parser def _do_discovery(self, argv, Loader=None): self.start = '.' self.pattern = 'test*.py' self.top = None if argv is not None: # handle command line args for test discovery if self._discovery_parser is None: # for testing self._initArgParsers() self._discovery_parser.parse_args(argv, self) loader = self.testLoader if Loader is None else Loader() self.test = loader.discover(self.start, self.pattern, self.top) def runTests(self): if self.catchbreak: installHandler() if self.testRunner is None: self.testRunner = runner.TextTestRunner if isinstance(self.testRunner, type): try: try: testRunner = self.testRunner(verbosity=self.verbosity, failfast=self.failfast, buffer=self.buffer, warnings=self.warnings, tb_locals=self.tb_locals) except TypeError: # didn't accept the tb_locals argument testRunner = self.testRunner(verbosity=self.verbosity, failfast=self.failfast, buffer=self.buffer, warnings=self.warnings) except TypeError: # didn't accept the verbosity, buffer or failfast arguments testRunner = self.testRunner() else: # it is assumed to be a TestRunner instance testRunner = self.testRunner self.result = testRunner.run(self.test) if self.exit: sys.exit(not self.result.wasSuccessful()) main = TestProgram