public void Throws_when_invalid_number_of_locations(string filename)
        {
            var xml     = SampleResponse.GetXDocument(filename);
            var request = new Mock <GetLastPositionRequest>(Guid.NewGuid().ToString(), Guid.NewGuid().ToString());

            request.CallBase = true;
            request.Setup(x => x.MakeRequest()).Returns(xml);
            Assert.Throws <UnexpectedResponseException>(() => request.Object.Request());
        }