def test_overlap(self):
# 0-1 ; 0-1 ; does overlap.
self.assertTrue(overlap((0, 1), (0, 1)))
def test_overlap(self):
# 0-2 ; 1-3 ; does overlap.
self.assertTrue(overlap((0, 2), (1, 3)))
def test_overlap(self):
# 0-1 ; 1-2 ; does not overlap.
self.assertFalse(overlap((0, 1), (1, 2)))
