public void GetProductById_NonExistingItem_ReturnsEmpty()
{
string nonExistingId = "nonExistingId";
var result = ProductRatingService.GetByProductId(nonExistingId);
Assert.NotNull(result);
}
public void GetProductById_ExistingItem_ReturnsSameItem()
{
string testProductId = "testProductId";
var result = ProductRatingService.GetByProductId(testProductId);
Assert.NotNull(result);
Assert.Equal(testProductId, result.ProductId);
}
public void GetProductById_Null_ThrowsArgumentNullException()
{
Action actual = () => ProductRatingService.GetByProductId(null);
Assert.Throws <ArgumentNullException>(actual);
}
