public void GetById_ItemDoesntExist_ReturnsNull()
{
using (var context = new ApplicationDbContext(GetDbContextOptions("GetById_ItemDoesntExist_ReturnsNull")))
{
// Arrange
var repo = new FruitRepository(context);
// Act
var item = repo.GetById(123).Result;
// Assert
Assert.Null(item);
}
}
public void GetById_ItemExists_ReturnsItem()
{
using (var context = new ApplicationDbContext(GetDbContextOptions("GetById_ItemExists_ReturnsTheItem")))
{
// Arrange
context.Fruits.Add(new Fruit {
Id = 1, Color = Color.Red, Name = "Apple", Price = 2.99m, Rating = 5, Description = "An apple"
});
context.SaveChanges();
var repo = new FruitRepository(context);
// Act
var item = repo.GetById(1).Result;
// Assert
Assert.Equal(1, item.Id);
Assert.Equal("Apple", item.Name);
}
}
public void DeleteById_ItemExists_DeletesItemSuccessfully()
{
using (var context = new ApplicationDbContext(GetDbContextOptions("DeleteById_ItemExists_DeletesItemSuccessfully")))
{
// Arrange
var repo = new FruitRepository(context);
var item = new Fruit {
Id = 5, Color = Color.Red, Name = "Apple", Price = 2.99m, Rating = 5, Description = "An apple"
};
repo.Add(item).Wait();
// Act
repo.DeleteById(5).Wait();
// Assert
var deletedItem = repo.GetById(5).Result;
Assert.Null(deletedItem);
}
}
public void Add_SingleItem_ItemAddedSuccessfully()
{
using (var context = new ApplicationDbContext(GetDbContextOptions("Add_SingleItem_ItemAddedSuccessfully")))
{
// Arrange
var repo = new FruitRepository(context);
var itemToAdd = new Fruit {
Id = 5, Color = Color.Red, Name = "Apple", Price = 2.99m, Rating = 5, Description = "An apple"
};
// Act
repo.Add(itemToAdd).Wait();
// Assert
var item = repo.GetById(5).Result;
Assert.NotNull(item);
Assert.Equal(5, item.Id);
Assert.Equal("Apple", item.Name);
}
}
public void Update_ItemExists_UpdatesItemSuccessfully()
{
using (var context = new ApplicationDbContext(GetDbContextOptions("Update_ItemExists_UpdatesItemSuccessfully")))
{
// Arrange
var repo = new FruitRepository(context);
var item = new Fruit {
Id = 5, Color = Color.Red, Name = "Apple", Price = 2.99m, Rating = 5, Description = "An apple"
};
repo.Add(item).Wait();
// Act
item.Name = "Banana";
repo.Update(item).Wait();
// Assert
var updatedItem = repo.GetById(5).Result;
Assert.NotNull(updatedItem);
Assert.Equal("Banana", updatedItem.Name);
}
}
