Write a function to find the minimum product from the pairs of tuples within a given list.
def min_product_tuple(list1):
    result_min = min([abs(x * y) for x, y in list1] )
    return result_min
<s>[INST]<<SYS>>Given a task and its code, generate test cases for the code.<</SYS>>Write a function to find the minimum product from the pairs of tuples within a given list.
def min_product_tuple(list1):
    result_min = min([abs(x * y) for x, y in list1] )
    return result_min[/INST]assert min_product_tuple([(2, 7), (2, 6), (1, 8), (4, 9)] )==8
assert min_product_tuple([(10,20), (15,2), (5,10)] )==30
assert min_product_tuple([(11,44), (10,15), (20,5), (12, 9)] )==100</s>