mocking.cs

public class given_an_instance_of_test_controller
{
  [Fact]
  public void assert_that_the_name_query_string_parameter_is_returned_in_the_result()
  {
    // arrange
    var contextMock = new Mock<IContextAccessor>();
    contextMock.Setup(x => x.QueryString).Returns(new Dictionary<string, string> { { "name", "TestUser" } });
    var controller = new TestController(contextMock.Object);
    
    // act
    var result = controller.Get() as OkObjectResult;
    
    // assert
    Assert.Equal("TestUser", result.Value.ToString());
  }
}