public async Task CheckoutAsync_When_CartIsValid_Then_CartIsCheckedOut()
{
// Arrange
fixture.Customize <Cart>().Set(x => x.IsCheckedOut, false);
fixture.Customize <CartItem>().Set(x => x.ProductId, 2);
fixture.Customize <CartItem>().Set(x => x.Quantity, 10);
fixture.Customize <Product>().Set(x => x.Stock, int.MaxValue);
var cart = fixture.Generate <Cart>();
var product = fixture.Generate <Product>();
dataProvider.Setup(x => x.ProvideAsync())
.ReturnsAsync(new List <Cart> {
cart
});
var repository = new InMemoryCartRepository(dataProvider.Object);
// Act
await repository.CheckoutAsync(cart.Name, (x) => Task.FromResult(product));
// Assert
cart.IsCheckedOut.Should().BeTrue();
product.Stock.Should().Be(int.MaxValue - cart.Items.Sum(x => x.Quantity));
}
public async Task CheckoutAsync_When_CartNotFound_Then_ExceptionsIsThrown()
{
// Arrange
dataProvider.Setup(x => x.ProvideAsync())
.ReturnsAsync(Enumerable.Empty <Cart>());
var repository = new InMemoryCartRepository(dataProvider.Object);
// Act
await repository.CheckoutAsync(string.Empty, null);
// Assert Exception
}
public async Task CheckoutAsync_When_ProductNotFound_Then_ExceptionsIsThrown()
{
// Arrange
fixture.Customize <Cart>().Set(x => x.IsCheckedOut, false);
var cart = fixture.Generate <Cart>();
dataProvider.Setup(x => x.ProvideAsync())
.ReturnsAsync(new List <Cart> {
cart
});
var repository = new InMemoryCartRepository(dataProvider.Object);
// Act
await repository.CheckoutAsync(cart.Name, (x) => throw new ProdcutNotFoundException());
// Assert Exception
}
public async Task CheckoutAsync_When_InsufficientStock_Then_ExceptionsIsThrown()
{
// Arrange
fixture.Customize <Cart>().Set(x => x.IsCheckedOut, false);
fixture.Customize <CartItem>().Set(x => x.ProductId, 2);
fixture.Customize <CartItem>().Set(x => x.Quantity, 10);
var cart = fixture.Generate <Cart>();
dataProvider.Setup(x => x.ProvideAsync())
.ReturnsAsync(new List <Cart> {
cart
});
var repository = new InMemoryCartRepository(dataProvider.Object);
// Act
await repository.CheckoutAsync(cart.Name,
(x) => Task.FromResult(fixture.Generate <Product>(constraints: new { Stock = 15 })));
}
