def test_given_list_is_not_changed(self):
original_numbers = [2, 1, 4, 3, 6, 5]
numbers = [2, 1, 4, 3, 6, 5]
IntervalsExtractor.extract(numbers)
self.assertEqual(original_numbers, numbers)
def test_two_intervals(self):
numbers = [1, 2, 3, 6, 7, 8]
intervals = IntervalsExtractor.extract(numbers)
self.assertEqual("[1-3], [6-8]", intervals)
def test_multiple_intervals_from_unsorted_list(self):
numbers = [150, 101, 100, 104, 103, 102, 110, 105, 114, 113, 111, 115]
intervals = IntervalsExtractor.extract(numbers)
expected_output = "[100-105], [110-111], [113-115], [150]"
self.assertEqual(expected_output, intervals)
def test_single_interval_unsorted(self):
numbers = [2, 1, 4, 3, 6, 5]
intervals = IntervalsExtractor.extract(numbers)
self.assertEqual("[1-6]", intervals)
