How to mock RestSharp portable library in Unit Test

Question

I would like to mockup the RestClient class for test purposes

public class DataServices : IDataServices
{
    private readonly IRestClient _restClient;


    pub         


        

Answer 1

Mock IRestResponse<T> and return that

public static IRestClient MockRestClient<T>(HttpStatusCode httpStatusCode, string json) 
    where T : new() {
    var data = JsonConvert.DeserializeObject<T>(json)
    var response =  new Mock<IRestResponse<T>>();
    response.Setup(_ => _.StatusCode).Returns(httpStatusCode);
    response.Setup(_ => _.Data).Returns(data);

    var mockIRestClient = new Mock<IRestClient>();
    mockIRestClient
      .Setup(x => x.Execute<T>(It.IsAny<IRestRequest>()))
      .ReturnsAsync(response.Object);
    return mockIRestClient.Object;
}

The test should also be updated to be async as well

[TestMethod]
public async Task GetUserByUserName() {
    //Arrange
    var client = MockRestClient<User>(HttpStatusCode.OK, "my json code");
    var dataServices = new DataServices(client);
    //Act
    var user = await dataServices.GetUserByUserName("User1");
    //Assert
    Assert.AreEqual("User1", user.Username);
}