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[gvar] Add unit tests for gvar.compile() and gvar.decompile()

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This commit is contained in:
Sascha Brawer 2017-01-11 15:15:07 +01:00
parent 64bdb589c4
commit f5465d6d6e
1 changed files with 82 additions and 0 deletions
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82
Lib/fontTools/ttLib/tables/_g_v_a_r_test.py
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@ -4,11 +4,82 @@ from fontTools.misc.testTools import FakeFont
from fontTools.misc.textTools import deHexStr, hexStr from fontTools.misc.textTools import deHexStr, hexStr
from fontTools.ttLib import TTLibError, getTableClass, getTableModule, newTable from fontTools.ttLib import TTLibError, getTableClass, getTableModule, newTable
import unittest import unittest
from fontTools.ttLib.tables.TupleVariation import TupleVariation
gvarClass = getTableClass("gvar") gvarClass = getTableClass("gvar")
GVAR_DATA = deHexStr(
"0001 0000 " # 0: majorVersion=1 minorVersion=0
"0002 0000 " # 4: axisCount=2 sharedTupleCount=0
"0000001C " # 8: offsetToSharedTuples=28
"0003 0000 " # 12: glyphCount=3 flags=0
"0000001C " # 16: offsetToGlyphVariationData=28
"0000 0000 000C 002F " # 20: offsets=[0,0,12,47], times 2: [0,0,24,94],
# # +offsetToGlyphVariationData: [28,28,52,122]
#
# 28: Glyph variation data for glyph #0, ".notdef"
# ------------------------------------------------
# (no variation data for this glyph)
#
# 28: Glyph variation data for glyph #1, "space"
# ----------------------------------------------
"0001 000C " # 28: tupleVariationCount=1, offsetToData=12(+28=40)
"000B " # 32: tvHeader[0].variationDataSize=11
"A000 " # 34: tvHeader[0].tupleIndex=EMBEDDED_PEAK|PRIVATE_POINTS
"0000 2CCD " # 36: tvHeader[0].peakTuple={wght:0.0, wdth:0.7}
"00 " # 40: all points
"03 01 02 03 04 " # 41: deltaX=[1, 2, 3, 4]
"03 0b 16 21 2C " # 46: deltaY=[11, 22, 33, 44]
"00 " # 51: padding
#
# 52: Glyph variation data for glyph #2, "I"
# ------------------------------------------
"0002 001c " # 52: tupleVariationCount=2, offsetToData=28(+52=80)
"0013 " # 56: tvHeader[0].variationDataSize=19
"E000 " # 58: tvHeader[0].tupleIndex=
# # EMBEDDED_PEAK|INTERMEDIATE_REGION|PRIVATE_POINTS
"2000 0000 " # 60: tvHeader[0].peakTuple={wght:0.5, wdth:0.0}
"0000 0000 " # 64: tvHeader[0].intermediateStart={wght:0.0, wdth:0.0}
"4000 0000 " # 68: tvHeader[0].intermediateEnd={wght:1.0, wdth:0.0}
"0016 " # 72: tvHeader[1].variationDataSize=22
"A000 " # 74: tvHeader[1].tupleIndex=EMBEDDED_PEAK|PRIVATE_POINTS
"C000 3333 " # 76: tvHeader[1].peakTuple={wght:-1.0, wdth:0.8}
"00 " # 80: all points
"07 03 01 04 01 " # 81: deltaX.len=7, deltaX=[3, 1, 4, 1,
"05 09 02 06 " # 86: 5, 9, 2, 6]
"07 03 01 04 01 " # 90: deltaY.len=7, deltaY=[3, 1, 4, 1,
"05 09 02 06 " # 95: 5, 9, 2, 6]
"06 " # 99: 6 points
"05 00 01 03 01 " # 100: runLen=5(+1=6); delta-encoded run=[0, 1, 4, 5,
"01 01 " # 105: 6, 7]
"05 f8 07 fc 03 fe 01 " # 107: deltaX.len=5, deltaX=[-8,7,-4,3,-2,1]
"05 a8 4d 2c 21 ea 0b " # 114: deltaY.len=5, deltaY=[-88,77,44,33,-22,11]
"00" # 121: padding
) # 122: <end>
assert len(GVAR_DATA) == 122
GVAR_VARIATIONS = {
".notdef": [
],
"space": [
TupleVariation(
{"wdth": (0.0, 0.7, 0.7)},
[(1, 11), (2, 22), (3, 33), (4, 44)]),
],
"I": [
TupleVariation(
{"wght": (0.0, 0.5, 1.0)},
[(3,3), (1,1), (4,4), (1,1), (5,5), (9,9), (2,2), (6,6)]),
TupleVariation(
{"wght": (-1.0, -1.0, 0.0), "wdth": (0.0, 0.8, 0.8)},
[(-8,-88), (7,77), None, None, (-4,44), (3,33), (-2,-22), (1,11)]),
],
}
GVAR_DATA_EMPTY_VARIATIONS = deHexStr( GVAR_DATA_EMPTY_VARIATIONS = deHexStr(
"0001 0000 " # 0: majorVersion=1 minorVersion=0 "0001 0000 " # 0: majorVersion=1 minorVersion=0
"0002 0000 " # 4: axisCount=2 sharedTupleCount=0 "0002 0000 " # 4: axisCount=2 sharedTupleCount=0
@ -32,10 +103,16 @@ class GVARTableTest(unittest.TestCase):
font = FakeFont(glyphs) font = FakeFont(glyphs)
font.tables = {"glyf": glyf, "gvar": gvar, "fvar": fvar} font.tables = {"glyf": glyf, "gvar": gvar, "fvar": fvar}
glyf.glyphs = {glyph: Glyph() for glyph in glyphs} glyf.glyphs = {glyph: Glyph() for glyph in glyphs}
glyf.glyphs["I"].coordinates = [(10, 10), (10, 20), (20, 20), (20, 10)]
fvar.axes = [Axis(), Axis()] fvar.axes = [Axis(), Axis()]
fvar.axes[0].axisTag, fvar.axes[1].axisTag = "wght", "wdth" fvar.axes[0].axisTag, fvar.axes[1].axisTag = "wght", "wdth"
return font, gvar return font, gvar
def test_compile(self):
font, gvar = self.makeFont()
gvar.variations = GVAR_VARIATIONS
self.assertEqual(hexStr(gvar.compile(font)), hexStr(GVAR_DATA))
def test_compile_noVariations(self): def test_compile_noVariations(self):
font, gvar = self.makeFont() font, gvar = self.makeFont()
self.assertEqual(hexStr(gvar.compile(font)), self.assertEqual(hexStr(gvar.compile(font)),
@ -47,6 +124,11 @@ class GVARTableTest(unittest.TestCase):
self.assertEqual(hexStr(gvar.compile(font)), self.assertEqual(hexStr(gvar.compile(font)),
hexStr(GVAR_DATA_EMPTY_VARIATIONS)) hexStr(GVAR_DATA_EMPTY_VARIATIONS))
def test_decompile(self):
font, gvar = self.makeFont()
gvar.decompile(GVAR_DATA, font)
self.assertEqual(gvar.variations, GVAR_VARIATIONS)
def test_decompile_noVariations(self): def test_decompile_noVariations(self):
font, gvar = self.makeFont() font, gvar = self.makeFont()
gvar.decompile(GVAR_DATA_EMPTY_VARIATIONS, font) gvar.decompile(GVAR_DATA_EMPTY_VARIATIONS, font)