public async Task GetByIdAsync_WithExistentId_ShouldReturnCorrectResult()
{
var errorMessagePrefix = "ShoppingListService GetByIdAsync() method does not work properly.";
// Arrange
MapperInitializer.InitializeMapper();
var context = ApplicationDbContextInMemoryFactory.InitializeContext();
await this.SeedDataAsync(context);
var shoppingListRepository = new EfDeletableEntityRepository <ShoppingList>(context);
var shoppingListService = new ShoppingListService(shoppingListRepository);
var existentId = shoppingListRepository.All().First().Id;
// Act
var actualResult = await shoppingListService.GetByIdAsync(existentId);
var expectedResult = (await shoppingListRepository
.All()
.SingleOrDefaultAsync(x => x.Id == existentId))
.To <ShoppingListServiceModel>();
// Assert
Assert.True(actualResult.Id == expectedResult.Id, errorMessagePrefix + " " + "Id is not returned properly.");
Assert.True(actualResult.Ingredients == expectedResult.Ingredients, errorMessagePrefix + " " + "Ingredients are not returned properly.");
Assert.True(actualResult.RecipeId == expectedResult.RecipeId, errorMessagePrefix + " " + "RecipeId is not returned properly.");
}
public async Task GetByIdAsync_WithNonExistentId_ShouldThrowArgumentNullException()
{
// Arrange
MapperInitializer.InitializeMapper();
var context = ApplicationDbContextInMemoryFactory.InitializeContext();
var shoppingListRepository = new EfDeletableEntityRepository <ShoppingList>(context);
var shoppingListService = new ShoppingListService(shoppingListRepository);
var nonExistentId = Guid.NewGuid().ToString();
// Act
// Assert
await Assert.ThrowsAsync <ArgumentNullException>(async() =>
{
await shoppingListService.GetByIdAsync(nonExistentId);
});
}