public void Is_invalid_when_associated_products_exist()
{
var categoryID = 1;
var proxyMock = new Mock<IProductDataProxy>();
proxyMock.Setup(proxy => proxy.GetByCategory(categoryID))
.Returns(new[] { new Product() });
var rule = new CanDeleteCategoryRule(categoryID, proxyMock.Object);
rule.Validate().IsValid.ShouldBe(false);
rule.ErrorMessage.ShouldNotBe(null);
}
public void Is_valid_when_no_associated_products_exist()
{
var categoryID = 1;
var proxyMock = new Mock<IProductDataProxy>();
proxyMock.Setup(proxy => proxy.GetByCategory(categoryID))
.Returns(Enumerable.Empty<Product>());
var rule = new CanDeleteCategoryRule(categoryID, proxyMock.Object);
rule.Validate().IsValid.ShouldBe(true);
rule.ErrorMessage.ShouldBe(null);
}
public async Task Is_invalid_when_associated_products_exist_async()
{
var categoryID = 1;
var proxyMock = new Mock<IProductDataProxy>();
proxyMock.Setup(proxy => proxy.GetByCategoryAsync(categoryID))
.Returns(Task.FromResult((new[] { new Product() }).AsEnumerable<Product>()));
var rule = new CanDeleteCategoryRule(categoryID, proxyMock.Object);
await rule.ValidateAsync();
rule.IsValid.ShouldBe(false);
rule.ErrorMessage.ShouldNotBe(null);
}