public void SendServerMessageB() { var dateTimeOffset = DateTimeOffset.Now; ServerProxy.ServerMethodB("test", 255, int.MaxValue, long.MaxValue, 1.5, 1.5f, dateTimeOffset.DateTime, dateTimeOffset, new List <string>() { "foo", "bar" }, Tuple.Create("hello", "world")); Assert.IsTrue(Server.MethodCalls.Any()); Assert.AreEqual(Server.MethodCalls[0].MethodName, nameof(ServerMock.ServerMethodB)); var args = Server.MethodCalls[0].Args; AssertMethodB(args, dateTimeOffset); }