def test_check_020():
""" Checking OS/2 usWeightClass. """
from fontbakery.specifications.os2 import com_google_fonts_check_020 as check
from fontbakery.specifications.googlefonts import (style,
expected_os2_weight,
os2_weight_warn)
exp_os2_weight = lambda font: expected_os2_weight(style(font))
print('Test FAIL with a bad font...')
# Our reference Mada Regular is know to be bad here.
font = "data/test/mada/Mada-Regular.ttf"
status, message = list(check(TTFont(font), exp_os2_weight(font), os2_weight_warn()))[-1]
assert status == FAIL
print('Test PASS with a good font...')
# All fonts in our reference Cabin family are know to be good here.
for font in cabin_fonts:
status, message = list(check(TTFont(font), exp_os2_weight(font), os2_weight_warn()))[-1]
assert status == PASS
print('Test WARN with a bad ExtraLight:250 ...')
font = "data/test/mada/Mada-ExtraLight.ttf"
ttfont = TTFont("data/test/mada/Mada-ExtraLight.ttf")
ttfont["OS/2"].usWeightClass = 250
status, message = list(check(ttfont, exp_os2_weight(font), os2_weight_warn()))[-1]
assert status == WARN
def test_check_042(mada_ttFonts):
""" Checking OS/2 Metrics match hhea Metrics. """
from fontbakery.specifications.os2 import com_google_fonts_check_042 as check
# Our reference Mada Regular is know to be good here.
ttFont = TTFont("data/test/mada/Mada-Regular.ttf")
print("Test PASS with a good font...")
status, message = list(check(ttFont))[-1]
assert status == PASS
# Now we break it:
print('Test FAIL with a bad OS/2.sTypoAscender font...')
correct = ttFont['hhea'].ascent
ttFont['OS/2'].sTypoAscender = correct + 1
status, message = list(check(ttFont))[-1]
assert status == FAIL and message.code == "ascender"
# Restore good value:
ttFont['OS/2'].sTypoAscender = correct
# And break it again, now on sTypoDescender value:
print('Test FAIL with a bad OS/2.sTypoDescender font...')
correct = ttFont['hhea'].descent
ttFont['OS/2'].sTypoDescender = correct + 1
status, message = list(check(ttFont))[-1]
assert status == FAIL and message.code == "descender"
def test_check_040(mada_ttFonts):
""" Checking OS/2 usWinAscent & usWinDescent. """
from fontbakery.specifications.os2 import com_google_fonts_check_040 as check
from fontbakery.specifications.shared_conditions import vmetrics
# Our reference Mada Regular is know to be bad here.
vm = vmetrics(mada_ttFonts)
ttFont = TTFont("data/test/mada/Mada-Regular.ttf")
# But we fix it first to test the PASS code-path:
print('Test PASS with a good font...')
ttFont['OS/2'].usWinAscent = vm['ymax']
ttFont['OS/2'].usWinDescent = abs(vm['ymin'])
status, message = list(check(ttFont, vm))[-1]
assert status == PASS
# Then we break it:
print('Test FAIL with a bad OS/2.usWinAscent...')
ttFont['OS/2'].usWinAscent = vm['ymax'] - 1
ttFont['OS/2'].usWinDescent = abs(vm['ymin'])
status, message = list(check(ttFont, vm))[-1]
assert status == FAIL and message.code == "ascent"
print('Test FAIL with a bad OS/2.usWinDescent...')
ttFont['OS/2'].usWinAscent = vm['ymax']
ttFont['OS/2'].usWinDescent = abs(vm['ymin']) - 1
status, message = list(check(ttFont, vm))[-1]
assert status == FAIL and message.code == "descent"
def test_check_042(mada_ttFonts):
""" Checking OS/2 Metrics match hhea Metrics. """
from fontbakery.specifications.os2 import com_google_fonts_check_042 as check
# Our reference Mada Regular is know to be good here.
ttFont = TTFont("data/test/mada/Mada-Regular.ttf")
print("Test PASS with a good font...")
status, message = list(check(ttFont))[-1]
assert status == PASS
# Now we break it:
print('Test FAIL with a bad OS/2.sTypoAscender font...')
correct = ttFont['hhea'].ascent
ttFont['OS/2'].sTypoAscender = correct + 1
status, message = list(check(ttFont))[-1]
assert status == FAIL and message.code == "ascender"
# Restore good value:
ttFont['OS/2'].sTypoAscender = correct
# And break it again, now on sTypoDescender value:
print('Test FAIL with a bad OS/2.sTypoDescender font...')
correct = ttFont['hhea'].descent
ttFont['OS/2'].sTypoDescender = correct + 1
status, message = list(check(ttFont))[-1]
assert status == FAIL and message.code == "descender"
def test_check_040(mada_ttFonts):
""" Checking OS/2 usWinAscent & usWinDescent. """
from fontbakery.specifications.os2 import com_google_fonts_check_040 as check
from fontbakery.specifications.shared_conditions import vmetrics
# Our reference Mada Regular is know to be bad here.
vm = vmetrics(mada_ttFonts)
ttFont = TTFont("data/test/mada/Mada-Regular.ttf")
# But we fix it first to test the PASS code-path:
print('Test PASS with a good font...')
ttFont['OS/2'].usWinAscent = vm['ymax']
ttFont['OS/2'].usWinDescent = abs(vm['ymin'])
status, message = list(check(ttFont, vm))[-1]
assert status == PASS
# Then we break it:
print('Test FAIL with a bad OS/2.usWinAscent...')
ttFont['OS/2'].usWinAscent = vm['ymax'] - 1
ttFont['OS/2'].usWinDescent = abs(vm['ymin'])
status, message = list(check(ttFont, vm))[-1]
assert status == FAIL and message.code == "ascent"
print('Test FAIL with a bad OS/2.usWinDescent...')
ttFont['OS/2'].usWinAscent = vm['ymax']
ttFont['OS/2'].usWinDescent = abs(vm['ymin']) - 1
status, message = list(check(ttFont, vm))[-1]
assert status == FAIL and message.code == "descent"
def test_check_020():
""" Checking OS/2 usWeightClass. """
from fontbakery.specifications.os2 import com_google_fonts_check_020 as check
from fontbakery.specifications.googlefonts import (style,
expected_os2_weight,
os2_weight_warn)
exp_os2_weight = lambda font: expected_os2_weight(style(font))
print('Test FAIL with a bad font...')
# Our reference Mada Regular is know to be bad here.
font = "data/test/mada/Mada-Regular.ttf"
status, message = list(
check(TTFont(font), exp_os2_weight(font), os2_weight_warn()))[-1]
assert status == FAIL
print('Test PASS with a good font...')
# All fonts in our reference Cabin family are know to be good here.
for font in cabin_fonts:
status, message = list(
check(TTFont(font), exp_os2_weight(font), os2_weight_warn()))[-1]
assert status == PASS
print('Test WARN with a bad ExtraLight:250 ...')
font = "data/test/mada/Mada-ExtraLight.ttf"
ttfont = TTFont("data/test/mada/Mada-ExtraLight.ttf")
ttfont["OS/2"].usWeightClass = 250
status, message = list(
check(ttfont, exp_os2_weight(font), os2_weight_warn()))[-1]
assert status == WARN
def test_check_010(mada_ttFonts):
""" Fonts have consistent PANOSE family type ? """
from fontbakery.specifications.os2 import com_google_fonts_check_010 as check
print('Test PASS with good family.')
status, message = list(check(mada_ttFonts))[-1]
assert status == PASS
# introduce a wrong value in one of the font files:
value = mada_ttFonts[0]['OS/2'].panose.bFamilyType
incorrect_value = value + 1
mada_ttFonts[0]['OS/2'].panose.bFamilyType = incorrect_value
print('Test FAIL with inconsistent family.')
status, message = list(check(mada_ttFonts))[-1]
assert status == FAIL
def test_check_010(mada_ttFonts):
""" Fonts have consistent PANOSE family type ? """
from fontbakery.specifications.os2 import com_google_fonts_check_010 as check
print('Test PASS with good family.')
status, message = list(check(mada_ttFonts))[-1]
assert status == PASS
# introduce a wrong value in one of the font files:
value = mada_ttFonts[0]['OS/2'].panose.bFamilyType
incorrect_value = value + 1
mada_ttFonts[0]['OS/2'].panose.bFamilyType = incorrect_value
print('Test FAIL with inconsistent family.')
status, message = list(check(mada_ttFonts))[-1]
assert status == FAIL
def test_check_034():
""" Check if OS/2 xAvgCharWidth is correct. """
from fontbakery.specifications.os2 import com_google_fonts_check_034 as check
test_font_path = os.path.join("data", "test", "nunito", "Nunito-Regular.ttf")
test_font = TTFont(test_font_path)
status, message = list(check(test_font))[-1]
assert status == PASS
test_font['OS/2'].xAvgCharWidth = 556
status, message = list(check(test_font))[-1]
assert status == INFO
test_font['OS/2'].xAvgCharWidth = 500
status, message = list(check(test_font))[-1]
assert status == WARN
test_font = TTFont()
test_font['OS/2'] = fontTools.ttLib.newTable('OS/2')
test_font['OS/2'].version = 4
test_font['OS/2'].xAvgCharWidth = 1000
test_font['glyf'] = fontTools.ttLib.newTable('glyf')
test_font['glyf'].glyphs = {}
test_font['hmtx'] = fontTools.ttLib.newTable('hmtx')
test_font['hmtx'].metrics = {}
status, message = list(check(test_font))[-1]
assert status == FAIL
assert message.code == "missing-glyphs"
test_font = TTFont(test_font_path)
subsetter = fontTools.subset.Subsetter()
subsetter.populate(glyphs=['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'space'])
subsetter.subset(test_font)
test_font['OS/2'].xAvgCharWidth = 447
test_font['OS/2'].version = 2
temp_file = io.BytesIO()
test_font.save(temp_file)
test_font = TTFont(temp_file)
status, message = list(check(test_font))[-1]
assert status == PASS
test_font['OS/2'].xAvgCharWidth = 450
status, message = list(check(test_font))[-1]
assert status == INFO
test_font['OS/2'].xAvgCharWidth = 500
status, message = list(check(test_font))[-1]
assert status == WARN
test_font = TTFont(temp_file)
subsetter = fontTools.subset.Subsetter()
subsetter.populate(glyphs=['b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'space'])
subsetter.subset(test_font)
status, message = list(check(test_font))[-1]
assert status == FAIL
assert message.code == "missing-glyphs"
def test_check_034():
""" Check if OS/2 xAvgCharWidth is correct. """
from fontbakery.specifications.os2 import com_google_fonts_check_034 as check
test_font_path = os.path.join("data", "test", "nunito", "Nunito-Regular.ttf")
test_font = TTFont(test_font_path)
status, message = list(check(test_font))[-1]
assert status == PASS
test_font['OS/2'].xAvgCharWidth = 556
status, message = list(check(test_font))[-1]
assert status == WARN
test_font['OS/2'].xAvgCharWidth = 500
status, message = list(check(test_font))[-1]
assert status == FAIL
test_font = TTFont()
test_font['OS/2'] = fontTools.ttLib.newTable('OS/2')
test_font['OS/2'].version = 4
test_font['OS/2'].xAvgCharWidth = 1000
test_font['glyf'] = fontTools.ttLib.newTable('glyf')
test_font['glyf'].glyphs = {}
test_font['hmtx'] = fontTools.ttLib.newTable('hmtx')
test_font['hmtx'].metrics = {}
status, message = list(check(test_font))[-1]
assert status == FAIL
assert message.code == "missing-glyphs"
test_font = TTFont(test_font_path)
subsetter = fontTools.subset.Subsetter()
subsetter.populate(glyphs=['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'space'])
subsetter.subset(test_font)
test_font['OS/2'].xAvgCharWidth = 447
test_font['OS/2'].version = 2
temp_file = io.BytesIO()
test_font.save(temp_file)
test_font = TTFont(temp_file)
status, message = list(check(test_font))[-1]
assert status == PASS
test_font['OS/2'].xAvgCharWidth = 450
status, message = list(check(test_font))[-1]
assert status == WARN
test_font['OS/2'].xAvgCharWidth = 500
status, message = list(check(test_font))[-1]
assert status == FAIL
test_font = TTFont(temp_file)
subsetter = fontTools.subset.Subsetter()
subsetter.populate(glyphs=['b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'space'])
subsetter.subset(test_font)
status, message = list(check(test_font))[-1]
assert status == FAIL
assert message.code == "missing-glyphs"
