public void ByProduct_Should_Throw_ArgumentException_If_ProductId_Is_Empty()
{
IQueryable <ProductImage> images = new ProductImage[0].AsQueryable();
Guid productId = Guid.Empty;
var ex = Assert.Throws <ArgumentException>(() => ProductImageExtensions.ByProduct(images, productId));
Assert.Equal(nameof(productId), ex.ParamName);
}
public void ByProduct_Should_Throws_ArgumentNullException_If_Images_Is_Null()
{
IQueryable <ProductImage> images = null;
Guid productId = Guid.NewGuid();
var ex = Assert.Throws <ArgumentNullException>(() => ProductImageExtensions.ByProduct(images, productId));
Assert.Equal(nameof(images), ex.ParamName);
}