public async Task AddProductToCustomerrWishlistAsync_ShouldReturnExistingProduct_WhenProductIsAlreadyInWishlist()
{
//Arrange
string productId = "1bf0f365-fbdd-4e21-9786-da459d78dd1f";
_customerService.GetCustomerAsync(customerId).Returns(existingCustomer);
var existingList = new List <WishListProduct>()
{
new WishListProduct()
{
ProductId = productId
}
};
_wishlistRepository.GetCustomerWishlistAsync(customerId).Returns(existingList);
//Act
var sut = new WishlistService(_productRest, _customerService, _wishlistRepository);
var product = await sut.AddProductToCustomerrWishlistAsync(customerId, productId);
//Assert
Assert.NotNull(product);
await _wishlistRepository.DidNotReceive().InsertWishlistProductAsync(Arg.Any <int>(), Arg.Any <WishListProduct>());
Assert.Equal(productId, product.ProductId);
}
