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from fontTools.ttLib import TTFont
from fontTools.varLib.hvar import add_HVAR
from io import StringIO
import os
import unittest
import pytest
def test_roundtrip():
CWD = os.path.abspath(os.path.dirname(__file__))
DATADIR = os.path.join(CWD, "data")
ttx_path = os.path.join(DATADIR, "MutatorSans_All_Variable.ttx")
font = TTFont()
font.importXML(ttx_path)
HVAR1 = StringIO()
font.saveXML(HVAR1, tables=["HVAR"])
del font["HVAR"]
add_HVAR(font)
HVAR2 = StringIO()
font.saveXML(HVAR2, tables=["HVAR"])
assert HVAR1.getvalue() == HVAR2.getvalue()
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