public void Checkout()
{
// Arrange
TaxServiceController controller = new TaxServiceController();
// Act
// Verify initial form loads
ViewResult result = controller.Checkout() as ViewResult;
// Verify page loads with results
ViewResult resultPost = controller.Checkout(100, "NY", "10590", false) as ViewResult;
// Verify page loads after resetting form
ViewResult resultPageReset = controller.Checkout(0, "", "", true) as ViewResult;
// Verify error messages populate
var model = (TaxResultViewModel)result.Model;
var modelPost = (TaxResultViewModel)resultPost.Model;
var modelPageReset = (TaxResultViewModel)resultPageReset.Model;
// Assert
// Initial form
Assert.IsNotNull(result);
// Page with results
Assert.IsNotNull(resultPost);
// Page after form reset
Assert.IsNotNull(resultPageReset);
// Error messages
Assert.IsNotNull(model.ErrorMessage);
Assert.IsNotNull(modelPost.ErrorMessage);
Assert.IsNotNull(modelPageReset.ErrorMessage);
}
