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instancer_test: check GSUB.FeatureVariations set to None is skipped

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and doesn't raise TypeError exception.
This commit is contained in:
Cosimo Lupo 2020-10-05 18:59:21 +01:00
parent e78d7cf50a
commit e16cf0f8b8
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1 changed files with 13 additions and 0 deletions
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Tests/varLib/instancer_test.py
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@ -1666,6 +1666,19 @@ class InstantiateFeatureVariationsTest(object):
assert len(rec1.ConditionSet.ConditionTable) == 2
assert rec1.ConditionSet.ConditionTable[0].Format == 2
def test_GSUB_FeatureVariations_is_None(self, varfont2):
varfont2["GSUB"].table.Version = 0x00010001
varfont2["GSUB"].table.FeatureVariations = None
tmp = BytesIO()
varfont2.save(tmp)
varfont = ttLib.TTFont(tmp)
# DO NOT raise an exception when the optional 'FeatureVariations' attribute is
# present but is set to None (e.g. with GSUB 1.1); skip and do nothing.
assert varfont["GSUB"].table.FeatureVariations is None
instancer.instantiateFeatureVariations(varfont, {"wght": 400, "wdth": 100})
assert varfont["GSUB"].table.FeatureVariations is None
class LimitTupleVariationAxisRangesTest:
def check_limit_single_var_axis_range(self, var, axisTag, axisRange, expected):