public async Task Is_invalid_when_associated_orders_exist_async()
{
var productID = 1;
var orderDataProxy = new Mock <IOrderDataProxy>();
orderDataProxy.Setup(p => p.GetByProductAsync(productID))
.Returns(Task.FromResult(Enumerable.OfType <Order>(new[] { new Order() })));
var rule = new CanDeleteProductRule(productID, orderDataProxy.Object);
await rule.ValidateAsync();
rule.IsValid.ShouldBe(false);
rule.ErrorMessage.ShouldNotBe(null);
}
public async Task Is_valid_when_no_associated_orders_exist_async()
{
var productID = 1;
var orderDataProxy = new Mock <IOrderDataProxy>();
orderDataProxy.Setup(p => p.GetByProductAsync(productID))
.Returns(Task.FromResult(Enumerable.Empty <Order>()));
var orderService = new OrderService(orderDataProxy.Object, Mock.Of <IOrderItemService>(), Mock.Of <ITransactionContext>());
var rule = new CanDeleteProductRule(productID, orderService);
await rule.ValidateAsync();
rule.IsValid.ShouldBe(true);
rule.ErrorMessage.ShouldBe(null);
}