I'm writing wrapper for REST API of a service. In my wrapper I have quite simple method:public List<string> GetAvailableSources(){    var request = new RestRequest($session/{Id});    var sessionProto = _client.Execute<SessionPrototype>(request);    return sessionProto.Data.InstalledSources;}It's really simple and just sends request to service and returns result. However, unit test for that method is huge:[Test]public void GetAvailableSources_MustReturnItemsFromResponse(){    const long sessionId = 123;    var clientMock = new Mock<IRestClient>();    clientMock.Setup(x => x.Execute<SessionPrototype>(It.IsAny<IRestRequest>()))        .Returns(new RestResponse<SessionPrototype>()        {            Data = new SessionPrototype            {                Id = sessionId,                InstalledSources = new List<string>                {                    Scanner1,                    Scanner2                }            },            StatusCode = HttpStatusCode.OK        }).Verifiable();    var session = new Session(sessionId, clientMock.Object);    var sources = session.GetAvailableSources();    Assert.That(sources, Has.Count.EqualTo(2));    Assert.That(sources[0], Is.EqualTo(Scanner1));    Assert.That(sources[1], Is.EqualTo(Scanner2));    clientMock.Verify(        m => m.Execute<SessionPrototype>(            It.Is<IRestRequest>(                r => r.Resource == $session/{sessionId} && r.Method == Method.GET)));}Is there a way for simplifying tests for REST API?
REST API wrapper testing
c#;rest;nunit;moq