CODEWITHSUNDEEP
c#unit-testingmoqxunit
Joao Soranz
Joao Soranz

Reputation: 43

How mock ActionContext with Moq aspnetcore C# xUnit

I am trying mock this controller:

public IActionResult List()
{          

   Response.Headers.Add("contentRange", "1");
   Response.Headers.Add("acceptRange", "1");

   return Ok();
}

With this test:

[Fact]
public void when_call_list_should_return_sucess()
{
   //Arrange

   //Act
   var result = _purchaseController.List();

   //Assert
   Assert.Equal(200, ((ObjectResult)result).StatusCode);
}

But my HttpContext is null, and an error occurs, how could I mock my ActionContext and HttpContext to test?

Upvotes: 4

Views: 4881

Answers (1)

patriks
patriks

Reputation: 250

You could do this where you construct your _purchaseController, in your Setup or the like. In your case you don't even have to mock it.

_purchaseController = new PurchaseController
{
    ControllerContext = new ControllerContext 
    {
        HttpContext = new DefaultHttpContext()
    }
}

But if you also want to verify the response headers you would probably mock both the HttpContext and the expected HttpResponse, and provide your own HeaderDictionary to verify.

_headers = new HeaderDictionary();

var httpResponseMock = new Mock<HttpResponse>();
httpResponseMock.Setup(mock => mock.Headers).Returns(_headers);

var httpContextMock = new Mock<HttpContext>();
httpContextMock.Setup(mock => mock.Response).Returns(httpResponseMock.Object);

_purchaseController = new PurchaseController
{
    ControllerContext = new ControllerContext 
    {
        HttpContext = httpContextMock.Object
    }
}

Then you could Assert the header collection in a test

var result = _sut.List();

Assert.Equal("1", _headers["contentRange"]);
Assert.Equal("1", _headers["acceptRange"]);

Upvotes: 7

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