def test_all_duplicate():
numbers = [5, 5, 5, 5]
total = 10
expected = [
(5, 5),
]
result = pairs_that_sum(numbers, total)
assert expected == sorted(result)
def test_duplicates_center():
numbers = [5, 10, 10, 20]
total = 20
expected = [
(10, 10),
]
result = pairs_that_sum(numbers, total)
assert expected == sorted(result)
def test_duplicates_left():
numbers = [-48, -48, -48, 96]
total = 48
expected = [
(-48, 96),
]
result = pairs_that_sum(numbers, total)
assert expected == sorted(result)
def test_one_pair():
numbers = [5, 1, 2, 20, 15]
total = 20
expected = [
(5, 15),
]
result = pairs_that_sum(numbers, total)
assert expected == sorted(result)
def test_negative_number():
numbers = [-7, -5, 1, 10, 15]
total = 10
expected = [
(-5, 15),
]
result = pairs_that_sum(numbers, total)
assert expected == sorted(result)
def test_no_pairs():
numbers = [2, 3, 4, 5]
total = 10
expected = []
result = pairs_that_sum(numbers, total)
assert expected == sorted(result)
def test_multiple_pairs():
numbers = [9, 1, 2, 8, 15]
total = 10
expected = [(1, 9), (2, 8)]
result = pairs_that_sum(numbers, total)
assert expected == sorted(result)