mocking httpContext.Current Api controller unit test

I am trying to mock httpContext using Moq framework to esnure that httContext.Current is not null when request comes from Unit test but couldn't really make it working.

After doing google, i came with following steps so for and not sure what steps are next before i make post call to Api controller.

step 1

Add Moq package to project

step 2

using Moq;

step 3

var context = new Mock<HttpContextBase>();
var request = new Mock<HttpRequestBase>();
var response = new Mock<HttpResponseBase>();

request.Setup(r => r.UrlReferrer).Returns(new Uri("http://ift.tt/29lLFsT"));
response.Setup(r => r.Cookies).Returns(new HttpCookieCollection());
context.Setup(c => c.Request).Returns(request.Object);
context.Setup(c => c.Response).Returns(response.Object);

Can someone help me out for the next steps i need to do before making Post controller request.