loader.py 文件源码

def loadTestsFromTestClass(self, cls):
        """Load tests from a test class that is *not* a unittest.TestCase
        subclass.

        In this case, we can't depend on the class's `__init__` taking method
        name arguments, so we have to compose a MethodTestCase for each
        method in the class that looks testlike.
        """
        def wanted(attr, cls=cls, sel=self.selector):
            item = getattr(cls, attr, None)
            if isfunction(item):
                item = unbound_method(cls, item)
            elif not ismethod(item):
                return False
            return sel.wantMethod(item)
        cases = [self.makeTest(getattr(cls, case), cls)
                 for case in filter(wanted, dir(cls))]
        for test in self.config.plugins.loadTestsFromTestClass(cls):
            cases.append(test)
        return self.suiteClass(ContextList(cases, context=cls))