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63f6453 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 | import pytest
from solution import merge, total_length, contains, gaps, validate
def test_merge_overlapping_and_adjacent():
assert merge([(5, 7), (1, 3), (2, 4), (8, 9)]) == [(1, 9)]
def test_merge_disjoint_sorted():
assert merge([(10, 12), (1, 2)]) == [(1, 2), (10, 12)]
def test_merge_empty():
assert merge([]) == []
def test_validate_rejects_reversed_and_wrong_size():
with pytest.raises(ValueError):
validate((3, 1))
with pytest.raises(ValueError):
validate((1, 2, 3))
def test_total_length_counts_integers():
assert total_length([(1, 3), (2, 5), (10, 10)]) == 6
@pytest.mark.parametrize("x,expected", [(1, True), (4, True), (6, False), (0, False), (11, True), (20, False)])
def test_contains(x, expected):
assert contains([(1, 4), (8, 12)], x) is expected
def test_gaps_inside_bounds():
assert gaps([(3, 4), (7, 8)], 1, 10) == [(1, 2), (5, 6), (9, 10)]
def test_gaps_ignores_outside_and_full_cover():
assert gaps([(-5, -1), (20, 30)], 0, 2) == [(0, 2)]
assert gaps([(0, 10)], 0, 10) == []
def test_gaps_single_point_at_upper():
assert gaps([(0, 9)], 0, 10) == [(10, 10)]
def test_gaps_invalid_bounds():
with pytest.raises(ValueError):
gaps([], 5, 1)
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