'Perform the positive case test for C{failIf} or C{assertFalse}.
@param method: The test method to test.'

def _assertFalseFalse(self, method):

    for notTrue in [0, 0.0, False, None, (), []]:
        result = method(notTrue, ('failed    on    %r' % (notTrue,)))
        if (result != notTrue):
            self.fail(('Did    not    return    argument    %r' % (notTrue,)))
