def test_bigger(self):
self.assertEqual(
all_pairs_summing([1, 2, 2, 3], 4),
[(1, 3), (2, 2)]
)
self.assertEqual(
all_pairs_summing([1, 2, 2, 3], 3),
[(1, 2)]
)
self.assertEqual(
all_pairs_summing([1, 2, 2, 3], 40),
[]
)
def test_empty(self):
self.assertEqual(all_pairs_summing([], 0), [])
self.assertEqual(all_pairs_summing([], 1), [])
self.assertEqual(all_pairs_summing([], 10), [])
def test_large(self):
self.assertEqual(
all_pairs_summing([1, 2, 3, 4, 5, 6, 7, 8], 9),
[(1, 8), (2, 7), (3, 6), (4, 5)]
)
def test_simple(self):
self.assertEqual(all_pairs_summing([1, 2], 1), [])
self.assertEqual(all_pairs_summing([1, 2], 2), [])
self.assertEqual(all_pairs_summing([1, 2], 3), [(1, 2)])
