'Tests that failure to verify raises the proper CCProcessorSignatureException'

def test_verify_exception(self):

    params = OrderedDict()
    params['a'] = 'A'
    params['b'] = 'B'
    params['signedFields'] = 'A,B'
    params['signedDataPublicSignature'] = 'WONTVERIFY'
    with self.assertRaises(CCProcessorSignatureException):
        verify_signatures(params)
