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instancer_test: add test for instantiateSTAT

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added a dummy STAT table to PartialInstancer-VF.ttx font that has all 4 AxisValue formats.
It doesn't have contain AxisValue for each fvar NamedInstance like the spec recommends, but it's ok for the sake of this test
This commit is contained in:
Cosimo Lupo 2019-05-03 13:32:06 +01:00
parent 3bfff09c8c
commit 89ce41be55
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GPG Key ID: 20D4A261E4A0E642
2 changed files with 116 additions and 6 deletions
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68
Tests/varLib/data/PartialInstancerTest-VF.ttx
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@ -1,5 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
<ttFont sfntVersion="\x00\x01\x00\x00" ttLibVersion="3.40">
<ttFont sfntVersion="\x00\x01\x00\x00" ttLibVersion="3.41">
<GlyphOrder>
<!-- The 'id' attribute is only for humans; it is ignored when parsed. -->
@ -12,12 +12,12 @@
<!-- Most of this table will be recalculated by the compiler -->
<tableVersion value="1.0"/>
<fontRevision value="2.001"/>
<checkSumAdjustment value="0x9180a393"/>
<checkSumAdjustment value="0x710b1826"/>
<magicNumber value="0x5f0f3cf5"/>
<flags value="00000000 00000011"/>
<unitsPerEm value="1000"/>
<created value="Tue Mar 5 00:05:14 2019"/>
<modified value="Sat Apr 20 17:03:24 2019"/>
<modified value="Fri May 3 10:34:01 2019"/>
<xMin value="40"/>
<yMin value="-200"/>
<xMax value="450"/>
@ -300,6 +300,12 @@
<namerecord nameID="293" platformID="1" platEncID="0" langID="0x0" unicode="True">
ExtraCondensed Black
</namerecord>
<namerecord nameID="294" platformID="1" platEncID="0" langID="0x0" unicode="True">
Italic
</namerecord>
<namerecord nameID="295" platformID="1" platEncID="0" langID="0x0" unicode="True">
Upright
</namerecord>
<namerecord nameID="0" platformID="3" platEncID="1" langID="0x409">
Copyright 2015 Google Inc. All Rights Reserved.
</namerecord>
@ -450,6 +456,12 @@
<namerecord nameID="293" platformID="3" platEncID="1" langID="0x409">
ExtraCondensed Black
</namerecord>
<namerecord nameID="294" platformID="3" platEncID="1" langID="0x409">
Italic
</namerecord>
<namerecord nameID="295" platformID="3" platEncID="1" langID="0x409">
Upright
</namerecord>
</name>
<post>
@ -675,9 +687,9 @@
</MVAR>
<STAT>
<Version value="0x00010001"/>
<Version value="0x00010002"/>
<DesignAxisRecordSize value="8"/>
<!-- DesignAxisCount=2 -->
<!-- DesignAxisCount=3 -->
<DesignAxisRecord>
<Axis index="0">
<AxisTag value="wght"/>
@ -689,8 +701,52 @@
<AxisNameID value="257"/> <!-- Width -->
<AxisOrdering value="1"/>
</Axis>
<Axis index="2">
<AxisTag value="ital"/>
<AxisNameID value="294"/> <!-- Italic -->
<AxisOrdering value="2"/>
</Axis>
</DesignAxisRecord>
<!-- AxisValueCount=0 -->
<!-- AxisValueCount=5 -->
<AxisValueArray>
<AxisValue index="0" Format="1">
<AxisIndex value="0"/>
<Flags value="0"/>
<ValueNameID value="258"/> <!-- Thin -->
<Value value="100.0"/>
</AxisValue>
<AxisValue index="1" Format="3">
<AxisIndex value="0"/>
<Flags value="2"/>
<ValueNameID value="261"/> <!-- Regular -->
<Value value="400.0"/>
<LinkedValue value="700.0"/>
</AxisValue>
<AxisValue index="2" Format="2">
<AxisIndex value="0"/>
<Flags value="0"/>
<ValueNameID value="266"/> <!-- Black -->
<NominalValue value="900.0"/>
<RangeMinValue value="801.0"/>
<RangeMaxValue value="900.0"/>
</AxisValue>
<AxisValue index="3" Format="4">
<!-- AxisCount=1 -->
<Flags value="0"/>
<ValueNameID value="279"/> <!-- Condensed -->
<AxisValueRecord index="0">
<AxisIndex value="1"/>
<Value value="79.0"/>
</AxisValueRecord>
</AxisValue>
<AxisValue index="4" Format="3">
<AxisIndex value="2"/>
<Flags value="2"/>
<ValueNameID value="295"/> <!-- Upright -->
<Value value="0.0"/>
<LinkedValue value="1.0"/>
</AxisValue>
</AxisValueArray>
<ElidedFallbackNameID value="2"/> <!-- Regular -->
</STAT>

54
Tests/varLib/instancer_test.py
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@ -4,6 +4,7 @@ from fontTools import ttLib
from fontTools import designspaceLib
from fontTools.feaLib.builder import addOpenTypeFeaturesFromString
from fontTools.ttLib.tables import _f_v_a_r
from fontTools.ttLib.tables import otTables
from fontTools.ttLib.tables.TupleVariation import TupleVariation
from fontTools import varLib
from fontTools.varLib import instancer
@ -912,3 +913,56 @@ class InstantiateFvarTest(object):
instancer.instantiateFvar(varfont, {"wght": 0.0, "wdth": 0.0})
assert "fvar" not in varfont
class InstantiateSTATTest(object):
@pytest.mark.parametrize(
"location, expected",
[
({"wght": 400}, ["Condensed", "Upright"]),
({"wdth": 100}, ["Thin", "Regular", "Black", "Upright"]),
],
)
def test_pin_and_drop_axis(self, varfont, location, expected):
instancer.instantiateSTAT(varfont, location)
stat = varfont["STAT"].table
designAxes = {a.AxisTag for a in stat.DesignAxisRecord.Axis}
assert designAxes == {"wght", "wdth", "ital"}.difference(location)
name = varfont["name"]
valueNames = []
for axisValueTable in stat.AxisValueArray.AxisValue:
valueName = name.getDebugName(axisValueTable.ValueNameID)
valueNames.append(valueName)
assert valueNames == expected
def test_skip_empty_table(self, varfont):
stat = otTables.STAT()
stat.Version = 0x00010001
stat.populateDefaults()
assert not stat.DesignAxisRecord
assert not stat.AxisValueArray
varfont["STAT"].table = stat
instancer.instantiateSTAT(varfont, {"wght": 100})
assert not varfont["STAT"].table.DesignAxisRecord
def test_drop_table(self, varfont):
stat = otTables.STAT()
stat.Version = 0x00010001
stat.populateDefaults()
stat.DesignAxisRecord = otTables.AxisRecordArray()
axis = otTables.AxisRecord()
axis.AxisTag = "wght"
axis.AxisNameID = 0
axis.AxisOrdering = 0
stat.DesignAxisRecord.Axis = [axis]
varfont["STAT"].table = stat
instancer.instantiateSTAT(varfont, {"wght": 100})
assert "STAT" not in varfont