public void GetDefault_Test() { // Arrange var mockService = new Mock <IBranchService>(); mockService.Setup(x => x.GetDefault()) .Returns(new BranchModel { IsDefault = true }); var controller = new BranchController(mockService.Object); // Act IHttpActionResult actionResult = controller.GetDefault(); var contentResult = actionResult as OkNegotiatedContentResult <BranchModel>; // Assert Assert.IsNotNull(contentResult); Assert.IsNotNull(contentResult.Content); Assert.IsTrue(contentResult.Content.IsDefault); }