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from fontTools.misc.classifyTools import classify
def test_classify():
assert classify([]) == ([], {})
assert classify([[]]) == ([], {})
assert classify([[], []]) == ([], {})
assert classify([[1]]) == ([{1}], {1: {1}})
assert classify([[1, 2]]) == ([{1, 2}], {1: {1, 2}, 2: {1, 2}})
assert classify([[1], [2]]) == ([{1}, {2}], {1: {1}, 2: {2}})
assert classify([[1, 2], [2]]) == ([{1}, {2}], {1: {1}, 2: {2}})
assert classify([[1, 2], [2, 4]]) == ([{1}, {2}, {4}], {1: {1}, 2: {2}, 4: {4}})
assert classify([[1, 2], [2, 4, 5]]) == (
[{4, 5}, {1}, {2}],
{1: {1}, 2: {2}, 4: {4, 5}, 5: {4, 5}},
)
assert classify([[1, 2], [2, 4, 5]], sort=False) == (
[{1}, {4, 5}, {2}],
{1: {1}, 2: {2}, 4: {4, 5}, 5: {4, 5}},
)
assert classify([[1, 2, 9], [2, 4, 5]], sort=False) == (
[{1, 9}, {4, 5}, {2}],
{1: {1, 9}, 2: {2}, 4: {4, 5}, 5: {4, 5}, 9: {1, 9}},
)
assert classify([[1, 2, 9, 15], [2, 4, 5]], sort=False) == (
[{1, 9, 15}, {4, 5}, {2}],
{1: {1, 9, 15}, 2: {2}, 4: {4, 5}, 5: {4, 5}, 9: {1, 9, 15}, 15: {1, 9, 15}},
)
classes, mapping = classify([[1, 2, 9, 15], [2, 4, 5], [15, 5]], sort=False)
assert set([frozenset(c) for c in classes]) == set(
[frozenset(s) for s in ({1, 9}, {4}, {2}, {5}, {15})]
)
assert mapping == {1: {1, 9}, 2: {2}, 4: {4}, 5: {5}, 9: {1, 9}, 15: {15}}
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