How to unit test an Action method which returns JsonResult?

Question

If I have a controller like this:

[HttpPost]
public JsonResult FindStuff(string query) 
{
   var results = _repo.GetStuff(query);
   var jsonResult = results         


        

Answer 1

Here's one I use, perhaps it is of use to anyone. It tests an action that returns a JSON object for use in clientside functionality. It uses Moq and FluentAssertions.

[TestMethod]
public void GetActivationcode_Should_Return_JSON_With_Filled_Model()
{
    // Arrange...
    ActivatiecodeController activatiecodeController = this.ActivatiecodeControllerFactory();
    CodeModel model = new CodeModel { Activation = "XYZZY", Lifespan = 10000 };
    this.deviceActivatieModelBuilder.Setup(x => x.GenereerNieuweActivatiecode()).Returns(model);

    // Act...
    var result = activatiecodeController.GetActivationcode() as JsonResult;

    // Assert...
    ((CodeModel)result.Data).Activation.Should().Be("XYZZY");
    ((CodeModel)result.Data).Lifespan.Should().Be(10000);
}