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Add some basic tests for reorderGlyphs

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Khaled Hosny 2024-03-31 01:10:24 +02:00 committed by Behdad Esfahbod
parent 2c9d97652d
commit fae87446a8
2 changed files with 77 additions and 0 deletions
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Tests/ttLib/data/Test-Regular.ttf Normal file
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Tests/ttLib/reorderGlyphs_test.py Normal file
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import pytest
from pathlib import Path
from fontTools.ttLib import TTFont
from fontTools.ttLib.reorderGlyphs import reorderGlyphs
DATA_DIR = Path(__file__).parent / "data"
@pytest.mark.parametrize("lazy", [True, False, None])
def test_reorder_glyphs(lazy):
font_path = DATA_DIR / "Test-Regular.ttf"
font = TTFont(str(font_path), lazy=lazy)
old_coverage1 = list(
font["GSUB"].table.LookupList.Lookup[0].SubTable[0].Coverage[0].glyphs
)
old_coverage2 = list(
font["GPOS"].table.LookupList.Lookup[0].SubTable[0].Coverage.glyphs
)
ga = font.getGlyphOrder()
ga = [ga[0]] + list(reversed(ga[1:]))
reorderGlyphs(font, ga)
new_coverage1 = list(
font["GSUB"].table.LookupList.Lookup[0].SubTable[0].Coverage[0].glyphs
)
new_coverage2 = list(
font["GPOS"].table.LookupList.Lookup[0].SubTable[0].Coverage.glyphs
)
assert list(reversed(old_coverage1)) == new_coverage1
assert list(reversed(old_coverage2)) == new_coverage2
def test_ttfont_reorder_glyphs():
font_path = DATA_DIR / "Test-Regular.ttf"
font = TTFont(str(font_path))
ga = font.getGlyphOrder()
ga = [ga[0]] + list(reversed(ga[1:]))
old_coverage1 = list(
font["GSUB"].table.LookupList.Lookup[0].SubTable[0].Coverage[0].glyphs
)
old_coverage2 = list(
font["GPOS"].table.LookupList.Lookup[0].SubTable[0].Coverage.glyphs
)
font.reorderGlyphs(ga)
new_coverage1 = list(
font["GSUB"].table.LookupList.Lookup[0].SubTable[0].Coverage[0].glyphs
)
new_coverage2 = list(
font["GPOS"].table.LookupList.Lookup[0].SubTable[0].Coverage.glyphs
)
assert list(reversed(old_coverage1)) == new_coverage1
assert list(reversed(old_coverage2)) == new_coverage2
def test_reorder_glyphs_bad_length(caplog):
font_path = DATA_DIR / "Test-Regular.ttf"
font = TTFont(str(font_path))
with pytest.raises(ValueError) as ex:
reorderGlyphs(font, ["A"])
assert "New glyph order contains 1 glyphs" in str(ex.value)
def test_reorder_glyphs_bad_set(caplog):
font_path = DATA_DIR / "Test-Regular.ttf"
font = TTFont(str(font_path))
ga = list(font.getGlyphOrder()) + ["AA"]
ga.pop(1)
with pytest.raises(ValueError) as ex:
reorderGlyphs(font, ga)
assert "New glyph order does not contain the same set of glyphs" in str(ex.value)