def test_key_functions(self):
words = ["alfalfa", "animal", "apple", "acoustic"]
self.assertEqual(minmax(words, key=len), ("apple", "acoustic"))
def a_count(word):
return word.count("a")
self.assertEqual(minmax(words, key=a_count), ("apple", "alfalfa"))
with self.assertRaises(TypeError):
minmax([1], lambda x: x)
def test_default_value(self):
self.assertEqual(minmax([], default=0), (0, 0))
self.assertEqual(minmax([], default=None), (None, None))
self.assertEqual(minmax([], default="a"), ("a", "a"))
self.assertEqual(minmax([-10], default="a"), (-10, -10))
self.assertEqual(minmax([10], default="a"), (10, 10))
with self.assertRaises(TypeError):
minmax([1], 0)
def test_any_number_of_arguments(self):
self.assertEqual(minmax(1, 8, 3, 9, 2), (1, 9))
self.assertEqual(minmax("hi", "hey"), ("hey", "hi"))
self.assertEqual(minmax("a"), ("a", "a"))
self.assertEqual(minmax("abcd"), ("a", "d"))
with self.assertRaises(TypeError):
minmax()
def test_ordered_numbers(self):
self.assertEqual(minmax([0, 1, 2, 3, 4]), (0, 4))
def test_response_min_and_max_attributes(self):
words = ["alfalfa", "animal", "apple", "acoustic", "axiom"]
output = minmax(words)
self.assertEqual(output.min, "acoustic")
self.assertEqual(output.max, "axiom")
def test_with_non_lists(self):
self.assertEqual(minmax((89, 17, 70, 9)), (9, 89))
self.assertEqual(minmax({8, 7, 5, 3, 9, 6, 2}), (2, 9))
self.assertEqual(minmax(n**2 for n in range(1, 4)), (1, 9))
with self.assertRaises(ValueError):
minmax(iter([]))
def test_very_large_numbers(self):
self.assertEqual(minmax([2**1000, -2**1000]), (-2**1000, 2**1000))
def test_error_on_empty_iterable(self):
with self.assertRaises(ValueError):
minmax([])
def test_strings(self):
words = ["alfalfa", "animal", "apple", "acoustic", "axiom"]
self.assertEqual(minmax(words), ("acoustic", "axiom"))
def test_mixed_types(self):
with self.assertRaises(TypeError):
minmax(["a", 2])
def test_negative_numbers(self):
self.assertEqual(minmax([-10, -8, -7, -5, -3]), (-10, -3))
def test_same_item_multiple_times(self):
self.assertEqual(minmax([8, 8, 8]), (8, 8))
self.assertEqual(minmax([7, 5, 6, 5, 7]), (5, 7))
def test_single_item(self):
self.assertEqual(minmax([10]), (10, 10))
def test_with_out_of_order_numbers(self):
self.assertEqual(minmax([10, 8, 7, 5.0, 3, 6, 2]), (2, 10))
def minmax(test, *args):
res = args[0]
for arg in args[1:]:
if test(arg, res):
res = arg
return res
def lessthan(x, y):
return x < y
def grtrthan(x, y):
return x > y
if __name__ == '__main__':
print(minmax(lessthan, 4, 2, 1, 5, 6, 3)) # 셀프 테스트 코드
print(minmax(grtrthan, 4, 2, 1, 5, 6, 3))
# python minmax2.py
# I am: __main__
# 1
# 6
# python
import minmax2
# I am: minmax2
minmax2.minmax(minmax2.lessthan, 's', 'p', 'a', 'a')
# 'a'