:param pattern: Optional. Regexp pattern to match against the request URL. Useful if your test communicates with multiple SOAP APIs that need different mock responses.
:param test_request: Optional. Function to call with a request object, before returning the response. Can use this to run assertions on the SOAP request XML.
:param pattern: Optional. Regexp pattern to match against the request URL. Useful if your
test communicates with multiple SOAP APIs that need different mock responses.
:param test_request: Optional. Function to call with a request object, before returning
the response. Can use this to run assertions on the SOAP request XML.