public void Should_Success_Get_Excel_Monitoring() { var mockFacade = new Mock <IBudgetMasterSampleDisplayFacade>(); mockFacade.Setup(x => x.GenerateExcel(It.IsAny <long>())) .Returns(new MemoryStream()); var mockMapper = new Mock <IMapper>(); var user = new Mock <ClaimsPrincipal>(); var claims = new Claim[] { new Claim("username", "unittestusername") }; user.Setup(u => u.Claims).Returns(claims); BudgetMasterSampleDisplayController controller = GetController(mockFacade); controller.ControllerContext = new ControllerContext() { HttpContext = new DefaultHttpContext() { User = user.Object } }; controller.ControllerContext.HttpContext.Request.Headers["x-timezone-offset"] = "0"; var response = controller.GetXls(It.IsAny <long>()); Assert.Equal("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", response.GetType().GetProperty("ContentType").GetValue(response, null)); }