new_contents: 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
  
subject: check loading TTCollection with lazy attribute