public void CanEditProduct()
{
// Arrange - create the mock repository
var mock = new Mock<IProductRepository>();
mock.Setup(m => m.Products).Returns(
new[]
{
new Product { ProductID = 1, Name = "P1" }, new Product { ProductID = 2, Name = "P2" },
new Product { ProductID = 3, Name = "P3" },
}.AsQueryable());
// Arrange - create the controller
var target = new AdminController(mock.Object);
// Act
var p1 = target.Edit(1).ViewData.Model as Product;
var p2 = target.Edit(2).ViewData.Model as Product;
var p3 = target.Edit(3).ViewData.Model as Product;
// Assert
Assert.AreEqual(1, p1.ProductID);
Assert.AreEqual(2, p2.ProductID);
Assert.AreEqual(3, p3.ProductID);
}
public void CannotSaveInvalidChanges()
{
// Arrange - create mock repository
var mock = new Mock<IProductRepository>();
// Arrange - create the controller
var target = new AdminController(mock.Object);
// Arrange - create a product
var product = new Product { Name = "Test" };
// Arrange - add an error to the model state
target.ModelState.AddModelError("error", "error");
// Act - try to save the product
ActionResult result = target.Edit(product, null);
// Assert - check that the repository was not called
mock.Verify(m => m.SaveProduct(It.IsAny<Product>()), Times.Never());
// Assert - check the method result type
Assert.IsInstanceOfType(result, typeof(ViewResult));
}
public void CanSaveValidChanges()
{
// Arrange - create mock repository
var mock = new Mock<IProductRepository>();
// Arrange - create the controller
var target = new AdminController(mock.Object);
// Arrange - create a product
var product = new Product { Name = "Test" };
// Act - try to save the product
ActionResult result = target.Edit(product, null);
// Assert - check that the repository was called
mock.Verify(m => m.SaveProduct(product));
// Assert - check the method result type
Assert.IsNotInstanceOfType(result, typeof(ViewResult));
}
public void CannotEditNonexistentProduct()
{
// Arrange - create the mock repository
var mock = new Mock<IProductRepository>();
mock.Setup(m => m.Products).Returns(
new[]
{
new Product { ProductID = 1, Name = "P1" }, new Product { ProductID = 2, Name = "P2" },
new Product { ProductID = 3, Name = "P3" },
}.AsQueryable());
// Arrange - create the controller
var target = new AdminController(mock.Object);
// Act
var result = (Product)target.Edit(4).ViewData.Model;
// Assert
Assert.IsNull(result);
}