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Improve Python tree-shaking
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Justine Tunney
parent
5bb2275788
commit
4f41f2184d
169 changed files with 4182 additions and 2411 deletions
260
third_party/python/Lib/unittest/_main.py
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260
third_party/python/Lib/unittest/_main.py
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"""Unittest main program"""
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import sys
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import argparse
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import os
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from . import loader, runner
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from .signals import installHandler
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__unittest = True
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MAIN_EXAMPLES = """\
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Examples:
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%(prog)s test_module - run tests from test_module
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%(prog)s module.TestClass - run tests from module.TestClass
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%(prog)s module.Class.test_method - run specified test method
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%(prog)s path/to/test_file.py - run tests from test_file.py
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"""
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MODULE_EXAMPLES = """\
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Examples:
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%(prog)s - run default set of tests
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%(prog)s MyTestSuite - run suite 'MyTestSuite'
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%(prog)s MyTestCase.testSomething - run MyTestCase.testSomething
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%(prog)s MyTestCase - run all 'test*' test methods
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in MyTestCase
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"""
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def _convert_name(name):
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# on Linux / Mac OS X 'foo.PY' is not importable, but on
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# Windows it is. Simpler to do a case insensitive match
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# a better check would be to check that the name is a
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# valid Python module name.
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if os.path.isfile(name) and name.lower().endswith('.py'):
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if os.path.isabs(name):
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rel_path = os.path.relpath(name, os.getcwd())
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if os.path.isabs(rel_path) or rel_path.startswith(os.pardir):
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return name
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name = rel_path
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# on Windows both '\' and '/' are used as path
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# separators. Better to replace both than rely on os.path.sep
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return name[:-3].replace('\\', '.').replace('/', '.')
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return name
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def _convert_names(names):
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return [_convert_name(name) for name in names]
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class TestProgram(object):
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"""A command-line program that runs a set of tests; this is primarily
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for making test modules conveniently executable.
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"""
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# defaults for testing
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module=None
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verbosity = 1
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failfast = catchbreak = buffer = progName = warnings = None
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_discovery_parser = None
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def __init__(self, module='__main__', defaultTest=None, argv=None,
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testRunner=None, testLoader=loader.defaultTestLoader,
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exit=True, verbosity=1, failfast=None, catchbreak=None,
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buffer=None, warnings=None, *, tb_locals=False):
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if isinstance(module, str):
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self.module = __import__(module)
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for part in module.split('.')[1:]:
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self.module = getattr(self.module, part)
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else:
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self.module = module
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if argv is None:
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argv = sys.argv
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self.exit = exit
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self.failfast = failfast
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self.catchbreak = catchbreak
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self.verbosity = verbosity
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self.buffer = buffer
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self.tb_locals = tb_locals
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if warnings is None and not sys.warnoptions:
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# even if DeprecationWarnings are ignored by default
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# print them anyway unless other warnings settings are
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# specified by the warnings arg or the -W python flag
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self.warnings = 'default'
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else:
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# here self.warnings is set either to the value passed
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# to the warnings args or to None.
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# If the user didn't pass a value self.warnings will
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# be None. This means that the behavior is unchanged
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# and depends on the values passed to -W.
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self.warnings = warnings
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self.defaultTest = defaultTest
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self.testRunner = testRunner
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self.testLoader = testLoader
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self.progName = os.path.basename(argv[0])
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self.parseArgs(argv)
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self.runTests()
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def usageExit(self, msg=None):
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if msg:
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print(msg)
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if self._discovery_parser is None:
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self._initArgParsers()
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self._print_help()
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sys.exit(2)
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def _print_help(self, *args, **kwargs):
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if self.module is None:
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print(self._main_parser.format_help())
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print(MAIN_EXAMPLES % {'prog': self.progName})
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self._discovery_parser.print_help()
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else:
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print(self._main_parser.format_help())
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print(MODULE_EXAMPLES % {'prog': self.progName})
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def parseArgs(self, argv):
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self._initArgParsers()
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if self.module is None:
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if len(argv) > 1 and argv[1].lower() == 'discover':
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self._do_discovery(argv[2:])
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return
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self._main_parser.parse_args(argv[1:], self)
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if not self.tests:
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# this allows "python -m unittest -v" to still work for
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# test discovery.
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self._do_discovery([])
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return
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else:
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self._main_parser.parse_args(argv[1:], self)
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if self.tests:
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self.testNames = _convert_names(self.tests)
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if __name__ == '__main__':
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# to support python -m unittest ...
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self.module = None
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elif self.defaultTest is None:
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# createTests will load tests from self.module
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self.testNames = None
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elif isinstance(self.defaultTest, str):
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self.testNames = (self.defaultTest,)
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else:
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self.testNames = list(self.defaultTest)
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self.createTests()
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def createTests(self):
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if self.testNames is None:
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self.test = self.testLoader.loadTestsFromModule(self.module)
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else:
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self.test = self.testLoader.loadTestsFromNames(self.testNames,
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self.module)
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def _initArgParsers(self):
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parent_parser = self._getParentArgParser()
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self._main_parser = self._getMainArgParser(parent_parser)
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self._discovery_parser = self._getDiscoveryArgParser(parent_parser)
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def _getParentArgParser(self):
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parser = argparse.ArgumentParser(add_help=False)
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parser.add_argument('-v', '--verbose', dest='verbosity',
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action='store_const', const=2,
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help='Verbose output')
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parser.add_argument('-q', '--quiet', dest='verbosity',
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action='store_const', const=0,
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help='Quiet output')
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parser.add_argument('--locals', dest='tb_locals',
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action='store_true',
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help='Show local variables in tracebacks')
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if self.failfast is None:
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parser.add_argument('-f', '--failfast', dest='failfast',
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action='store_true',
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help='Stop on first fail or error')
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self.failfast = False
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if self.catchbreak is None:
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parser.add_argument('-c', '--catch', dest='catchbreak',
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action='store_true',
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help='Catch Ctrl-C and display results so far')
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self.catchbreak = False
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if self.buffer is None:
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parser.add_argument('-b', '--buffer', dest='buffer',
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action='store_true',
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help='Buffer stdout and stderr during tests')
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self.buffer = False
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return parser
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def _getMainArgParser(self, parent):
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parser = argparse.ArgumentParser(parents=[parent])
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parser.prog = self.progName
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parser.print_help = self._print_help
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parser.add_argument('tests', nargs='*',
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help='a list of any number of test modules, '
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'classes and test methods.')
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return parser
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def _getDiscoveryArgParser(self, parent):
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parser = argparse.ArgumentParser(parents=[parent])
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parser.prog = '%s discover' % self.progName
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parser.epilog = ('For test discovery all test modules must be '
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'importable from the top level directory of the '
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'project.')
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parser.add_argument('-s', '--start-directory', dest='start',
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help="Directory to start discovery ('.' default)")
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parser.add_argument('-p', '--pattern', dest='pattern',
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help="Pattern to match tests ('test*.py' default)")
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parser.add_argument('-t', '--top-level-directory', dest='top',
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help='Top level directory of project (defaults to '
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'start directory)')
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for arg in ('start', 'pattern', 'top'):
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parser.add_argument(arg, nargs='?',
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default=argparse.SUPPRESS,
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help=argparse.SUPPRESS)
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return parser
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def _do_discovery(self, argv, Loader=None):
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self.start = '.'
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self.pattern = 'test*.py'
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self.top = None
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if argv is not None:
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# handle command line args for test discovery
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if self._discovery_parser is None:
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# for testing
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self._initArgParsers()
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self._discovery_parser.parse_args(argv, self)
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loader = self.testLoader if Loader is None else Loader()
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self.test = loader.discover(self.start, self.pattern, self.top)
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def runTests(self):
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if self.catchbreak:
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installHandler()
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if self.testRunner is None:
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self.testRunner = runner.TextTestRunner
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if isinstance(self.testRunner, type):
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try:
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try:
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testRunner = self.testRunner(verbosity=self.verbosity,
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failfast=self.failfast,
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buffer=self.buffer,
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warnings=self.warnings,
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tb_locals=self.tb_locals)
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except TypeError:
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# didn't accept the tb_locals argument
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testRunner = self.testRunner(verbosity=self.verbosity,
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failfast=self.failfast,
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buffer=self.buffer,
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warnings=self.warnings)
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except TypeError:
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# didn't accept the verbosity, buffer or failfast arguments
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testRunner = self.testRunner()
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else:
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# it is assumed to be a TestRunner instance
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testRunner = self.testRunner
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self.result = testRunner.run(self.test)
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if self.exit:
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sys.exit(not self.result.wasSuccessful())
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main = TestProgram
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