public void SendBeaconRequestDoesNotAppendIfAdditionalQueryParametersAreNull()
{
// given
string capturedUrl = null;
spyClient.DoPostRequest(Arg.Do <string>(u => capturedUrl = u), Arg.Any <string>(), Arg.Any <byte[]>())
.Returns(CreateSuccessHttpResponse());
// when
spyClient.SendBeaconRequest(null, null, null);
// then
var expectedUrl = InitializeBaseUrl();
Assert.That(capturedUrl, Is.EqualTo(expectedUrl.ToString()));
}