fonttools/Tests/ttLib/ttCollection_test.py

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import os
from fontTools.ttLib import TTCollection
import pytest
TTX_DATA_DIR = os.path.join(os.path.dirname(__file__), "..", "ttx", "data")
@pytest.mark.parametrize("lazy", [None, True, False])
def test_lazy_open(lazy):
ttc = os.path.join(TTX_DATA_DIR, "TestTTC.ttc")
with TTCollection(ttc, lazy=lazy) as collection:
assert len(collection) == 2
assert collection[0]["maxp"].numGlyphs == 6
assert collection[1]["maxp"].numGlyphs == 6