def test_add_infinite_left(self):
r = Ranges([Range(0, 10), Range(15, 20)])
r.add(Range(None, 16))
self.assertEqual([Range(None, 20)], r.get_ranges())
def test_add_infinite_right(self):
r = Ranges([Range(0, 10), Range(15, 20)])
r.add(Range(5, None))
self.assertEqual([Range(0, None)], r.get_ranges())
def test_add_overlapping_in_middle(self):
r = Ranges([Range(0, 10), Range(15, 20)])
r.add(Range(10, 15))
self.assertEqual([Range(0, 20)], r.get_ranges())
def test_add_middle_no_overlap(self):
r = Ranges([Range(0, 10), Range(15, 20)])
r.add(Range(12, 13))
self.assertEqual([Range(0, 10), Range(12, 13), Range(15, 20)], r.get_ranges())
def test_add_at_start(self):
r = Ranges([Range(15, 20)])
r.add(Range(5, 10))
self.assertEqual([Range(5, 10), Range(15, 20)], r.get_ranges())
