def test_ufodiff_ufo_glyph_false():
ufo = Ufo()
for nonglyph_file in ufo_acceptable_files:
assert ufo.is_glyph_file(nonglyph_file) is False
def test_ufodiff_ufo_glyph_true():
ufo = Ufo()
assert ufo.is_glyph_file("A.glif") is True
assert ufo.is_glyph_file("A__.glif") is True
assert ufo.is_glyph_file("0012.glif") is True