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[subset_test] add tests for --passthrough-tables option

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This commit is contained in:
Cosimo Lupo 2016-09-26 19:13:56 +01:00
parent 9de25ea628
commit 4ae7bba184
1 changed files with 24 additions and 1 deletions
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25
Lib/fontTools/subset/subset_test.py
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@ -1,7 +1,7 @@
from __future__ import print_function, division, absolute_import
from fontTools.misc.py23 import *
from fontTools import subset
from fontTools.ttLib import TTFont
from fontTools.ttLib import TTFont, newTable
import contextlib
import difflib
import logging
@ -204,6 +204,29 @@ class SubsetTest(unittest.TestCase):
self.assertTrue(filter(lambda l: l.args['msg'] == "subset 'cmap'", logs))
self.assertTrue(filter(lambda l: l.args['msg'] == "subset 'glyf'", logs))
def test_passthrough_tables(self):
_, fontpath = self.compile_font(self.getpath("TestTTF-Regular.ttx"), ".ttf")
font = TTFont(fontpath)
unknown_tag = 'ZZZZ'
unknown_table = newTable(unknown_tag)
unknown_table.data = b'\0'*10
font[unknown_tag] = unknown_table
font.save(fontpath)
subsetpath = self.temp_path(".ttf")
subset.main([fontpath, "--output-file=%s" % subsetpath])
subsetfont = TTFont(subsetpath)
# tables we can't subset are dropped by default
self.assertFalse(unknown_tag in subsetfont)
subsetpath = self.temp_path(".ttf")
subset.main([fontpath, "--passthrough-tables", "--output-file=%s" % subsetpath])
subsetfont = TTFont(subsetpath)
# unknown tables are kept if --passthrough-tables option is passed
self.assertTrue(unknown_tag in subsetfont)
if __name__ == "__main__":
unittest.main()