public async Task RespondWithProtobuf_GetObject() { HttpTest test = new HttpTest(); ComplexObject objectToSerialize = new ComplexObject { Id = 1, Name = "Test", Address = new List <Address> { new Address { Line1 = "Address line 1", Line2 = "Address line 2" } } }; test.RespondWithProtobuf(objectToSerialize); var response = await FlurlRequest().PostProtobufAsync(new ComplexObject()).ReceiveProtobuf <ComplexObject>(); Assert.AreEqual(objectToSerialize.Id, response.Id); Assert.AreEqual(objectToSerialize.Name, response.Name); Assert.AreEqual(objectToSerialize.Address.Count, response.Address.Count); Assert.AreEqual(objectToSerialize.Address[0].Line1, response.Address[0].Line1); Assert.AreEqual(objectToSerialize.Address[0].Line2, response.Address[0].Line2); }