def test_unmatched(self):
"""
`ServiceExceptionDetail.from_element` returns ``None`` if the element's
tag is not a service exception detail.
"""
elem = L.WhatIsThis(L.foo('a'), L.bar('b'))
self.assertIdentical(None, ServiceExceptionDetail.from_element(elem))
def test_from_element(self):
"""
`ServiceExceptionDetail.from_element` returns
a `ServiceExceptionDetail` instance by parsing
a ``ServiceExceptionDetail`` detail element.
"""
elem = PARLAYX_COMMON_NS.ServiceExceptionDetail(
L.messageId('a'), L.text('b'), L.variables('c'), L.variables('d'))
detail = ServiceExceptionDetail.from_element(elem)
self.assertEqual(('a', 'b', ['c', 'd']),
(detail.message_id, detail.text, detail.variables))
