import unittest
from dataset.problem_15.buggy import has_overlap


class TestIntervalOverlap(unittest.TestCase):
    def test_overlapping(self):
        self.assertTrue(has_overlap((1, 5), (4, 9)))

    def test_touching_endpoints(self):
        self.assertTrue(has_overlap((1, 3), (3, 7)))


if __name__ == "__main__":
    unittest.main()