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#!/usr/bin/python
#
# Copyright 2015 Google Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Test assumptions that web fonts rely on."""
import unittest
from nototools import font_data
import common_tests
FONTS = common_tests.load_fonts(
['out/web/*.ttf'],
expected_count=18)
class TestItalicAngle(common_tests.TestItalicAngle):
loaded_fonts = FONTS
class TestMetaInfo(common_tests.TestMetaInfo):
loaded_fonts = FONTS
# Since different font files are hinted at different times, the actual
# outlines differ slightly. So we are keeping the version numbers as a hint.
test_version_numbers = None
class TestNames(common_tests.TestNames):
loaded_fonts = FONTS
family_name = 'Roboto'
def test_unique_identifier_and_full_name(self):
"""Tests the unique identifier and full name."""
for records in self.names:
expected_name = records[1] + ' ' + records[2]
self.assertEqual(records[3], expected_name)
self.assertEqual(records[4], expected_name)
self.assertFalse(records.has_key(18))
def test_postscript_name(self):
"""Tests the postscript name."""
for records in self.names:
expected_name = (records[1] + '-' + records[2]).replace(' ', '')
self.assertEqual(records[6], expected_name)
class TestDigitWidths(common_tests.TestDigitWidths):
loaded_fonts = FONTS
class TestCharacterCoverage(common_tests.TestCharacterCoverage):
loaded_fonts = FONTS
test_inclusion_of_sound_recording_copyright = None
class TestVerticalMetrics(common_tests.TestVerticalMetrics):
loaded_fonts = FONTS
def test_os2_metrics(self):
"""Tests OS/2 vertical metrics to be equal to the old values."""
for font in self.fonts:
os2_table = font['OS/2']
self.assertEqual(os2_table.sTypoDescender, -512)
self.assertEqual(os2_table.sTypoAscender, 1536)
self.assertEqual(os2_table.sTypoLineGap, 102)
self.assertEqual(os2_table.usWinDescent, 512)
self.assertEqual(os2_table.usWinAscent, 1946)
class TestLigatures(common_tests.TestLigatures):
loaded_fonts = FONTS
class TestHints(unittest.TestCase):
"""Tests hints."""
def setUp(self):
self.fontfiles, self.fonts = FONTS
def test_existance_of_hints(self):
"""Tests all glyphs and makes sure non-composite ones have hints."""
missing_hints = []
for font in self.fonts:
glyf_table = font['glyf']
for glyph_name in font.getGlyphOrder():
glyph = glyf_table[glyph_name]
if glyph.numberOfContours <= 0: # composite or empty glyph
continue
if len(glyph.program.bytecode) <= 0:
missing_hints.append(
(glyph_name, font_data.font_name(font)))
self.assertTrue(missing_hints == [])
def test_height_of_lowercase_o(self):
"""Tests the height of the lowercase o in low resolutions."""
for fontfile in self.fontfiles:
for size in range(8, 30): # Kind of arbitrary
o_height = common_tests.get_rendered_char_height(
fontfile, size, 'o')
n_height = common_tests.get_rendered_char_height(
fontfile, size, 'n')
self.assertEqual(o_height, n_height)
if __name__ == '__main__':
unittest.main()
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