class SkipTest(Exception): pass class AssertRaisesContext: def __init__(self, exc): self.expected = exc def __enter__(self): return self def __exit__(self, exc_type, exc_value, tb): if exc_type is None: assert False, "%r not raised" % self.expected if issubclass(exc_type, self.expected): return True return False class TestCase: def fail(self, msg=''): assert False, msg def assertEqual(self, x, y, msg=''): if not msg: msg = "%r vs (expected) %r" % (x, y) assert x == y, msg def assertNotEqual(self, x, y, msg=''): if not msg: msg = "%r not expected to be equal %r" % (x, y) assert x != y, msg def assertAlmostEqual(self, x, y, places=None, msg='', delta=None): if x == y: return if delta is not None and places is not None: raise TypeError("specify delta or places not both") if delta is not None: if abs(x - y) <= delta: return if not msg: msg = '%r != %r within %r delta' % (x, y, delta) else: if places is None: places = 7 if round(abs(y - x), places) == 0: return if not msg: msg = '%r != %r within %r places' % (x, y, places) assert False, msg def assertNotAlmostEqual(self, x, y, places=None, msg='', delta=None): if delta is not None and places is not None: raise TypeError("specify delta or places not both") if delta is not None: if not (x == y) and abs(x - y) > delta: return if not msg: msg = '%r == %r within %r delta' % (x, y, delta) else: if places is None: places = 7 if not (x == y) and round(abs(y - x), places) != 0: return if not msg: msg = '%r == %r within %r places' % (x, y, places) assert False, msg def assertIs(self, x, y, msg=''): if not msg: msg = "%r is not %r" % (x, y) assert x is y, msg def assertIsNot(self, x, y, msg=''): if not msg: msg = "%r is %r" % (x, y) assert x is not y, msg def assertIsNone(self, x, msg=''): if not msg: msg = "%r is not None" % x assert x is None, msg def assertIsNotNone(self, x, msg=''): if not msg: msg = "%r is None" % x assert x is not None, msg def assertTrue(self, x, msg=''): if not msg: msg = "Expected %r to be True" % x assert x, msg def assertFalse(self, x, msg=''): if not msg: msg = "Expected %r to be False" % x assert not x, msg def assertIn(self, x, y, msg=''): if not msg: msg = "Expected %r to be in %r" % (x, y) assert x in y, msg def assertIsInstance(self, x, y, msg=''): assert isinstance(x, y), msg def assertRaises(self, exc, func=None, *args, **kwargs): if func is None: return AssertRaisesContext(exc) try: func(*args, **kwargs) assert False, "%r not raised" % exc except Exception as e: if isinstance(e, exc): return raise def skip(msg): def _decor(fun): # We just replace original fun with _inner def _inner(self): raise SkipTest(msg) return _inner return _decor def skipUnless(cond, msg): if cond: return lambda x: x return skip(msg) class TestSuite: def __init__(self): self.tests = [] def addTest(self, cls): self.tests.append(cls) class TestRunner: def run(self, suite): res = TestResult() for c in suite.tests: run_class(c, res) return res class TestResult: def __init__(self): self.errorsNum = 0 self.failuresNum = 0 self.skippedNum = 0 self.testsRun = 0 def wasSuccessful(self): return self.errorsNum == 0 and self.failuresNum == 0 def run_class(c, test_result): o = c() set_up = getattr(o, "setUp", lambda: None) tear_down = getattr(o, "tearDown", lambda: None) print('class', c.__qualname__) for name in dir(o): if name.startswith("test"): print(' ', name, end=' ...') m = getattr(o, name) try: set_up() test_result.testsRun += 1 m() tear_down() print(" ok") except SkipTest as e: print(" skipped:", e.args[0]) test_result.skippedNum += 1 def main(module="__main__"): def test_cases(m): for tn in dir(m): c = getattr(m, tn) if isinstance(c, object) and isinstance(c, type) and issubclass(c, TestCase): yield c m = __import__(module) suite = TestSuite() for c in test_cases(m): suite.addTest(c) runner = TestRunner() result = runner.run(suite) msg = "Ran %d tests" % result.testsRun if result.skippedNum > 0: msg += " (%d skipped)" % result.skippedNum print(msg)