def test_input8(self):
input_data = ('i1', 'i2', 'i3', 'i4')
output = FindMinPrice('input.csv', input_data).get_best_price()
self.assertEqual(output, ('2', 8.45))
def test_input1(self):
input_data = ('i1', )
output = FindMinPrice('input.csv', input_data).get_best_price()
self.assertEqual(output, ('1', 1.0))
def test_input3(self):
input_data = ('i2', 'i3')
output = FindMinPrice('input.csv', input_data).get_best_price()
self.assertEqual(output, ('1', 4.0))