def test_impossible_case(self):
self.assertEqual(find_best_exchange([7, 10], 43, dict()), -1,
"Should be -1")
def test_input_to_dictionary(self):
already_calculated_values = dict()
result = find_best_exchange([1, 5, 7, 18], 28,
already_calculated_values)
self.assertEqual(already_calculated_values[24], 3, "Should be 3")
self.assertEqual(result, 3, "Should be 3")
def test_simple_case(self):
self.assertEqual(find_best_exchange([10], 10, dict()), 1,
"Should be 1")
def test_already_counted_value_case(self):
already_calculated_values = dict()
already_calculated_values[35] = 'Value from dictionary'
self.assertEqual(
find_best_exchange([10, 15], 35, already_calculated_values),
'Value from dictionary', "Should be Value from dictionary")
def test_tricky_case(self):
self.assertEqual(find_best_exchange([10, 15], 35, dict()), 3,
"Should be 3")
def test_complicated_case(self):
self.assertEqual(find_best_exchange([1, 5, 7, 18], 28, dict()), 3,
"Should be 3")
def test_regular_case(self):
self.assertEqual(find_best_exchange([2, 3, 5], 18, dict()), 4,
"Should be 4")
def test_too_big_coins_case(self):
self.assertEqual(find_best_exchange([44, 185, 1000], 10, dict()), -1,
"Should be -1")