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#!/usr/bin/python
"""Test assumptions that Android relies on."""
import glob
import unittest
from fontTools import ttLib
from nototools import coverage
from nototools import font_data
import roboto_data
def load_fonts():
"""Load all fonts built for Android."""
all_font_files = glob.glob('out/android/*.ttf')
all_fonts = [ttLib.TTFont(font) for font in all_font_files]
assert len(all_font_files) == 18
return all_font_files, all_fonts
class TestMetaInfo(unittest.TestCase):
"""Test various meta information."""
def setUp(self):
_, self.fonts = load_fonts()
def test_us_weight(self):
"Tests the usWeight of the fonts to be correct."""
for font in self.fonts:
weight = roboto_data.extract_weight_name(font_data.font_name(font))
expected_numeric_weight = roboto_data.WEIGHTS[weight]
self.assertEqual(
font['OS/2'].usWeightClass,
expected_numeric_weight)
class TestVerticalMetrics(unittest.TestCase):
"""Test the vertical metrics of fonts."""
def setUp(self):
_, self.fonts = load_fonts()
def test_ymin_ymax(self):
"""Tests yMin and yMax to be equal to what Android expects."""
for font in self.fonts:
head_table = font['head']
self.assertEqual(head_table.yMin, -555)
self.assertEqual(head_table.yMax, 2163)
class TestCharacterCoverage(unittest.TestCase):
"""Tests character coverage."""
def setUp(self):
_, self.fonts = load_fonts()
self.LEGACY_PUA = frozenset({0xEE01, 0xEE02, 0xF6C3})
def test_lack_of_arrows_and_combining_keycap(self):
"""Tests that arrows and combining keycap are not in the fonts."""
for font in self.fonts:
charset = coverage.character_set(font)
self.assertNotIn(0x20E3, charset) # COMBINING ENCLOSING KEYCAP
self.assertNotIn(0x2191, charset) # UPWARDS ARROW
self.assertNotIn(0x2193, charset) # DOWNWARDS ARROW
def test_inclusion_of_legacy_pua(self):
"""Tests that legacy PUA characters remain in the fonts."""
for font in self.fonts:
charset = coverage.character_set(font)
for char in self.LEGACY_PUA:
self.assertIn(char, charset)
def test_non_inclusion_of_other_pua(self):
"""Tests that there are not other PUA characters except legacy ones."""
for font in self.fonts:
charset = coverage.character_set(font)
pua_chars = {
char for char in charset
if 0xE000 <= char <= 0xF8FF or 0xF0000 <= char <= 0x10FFFF}
self.assertTrue(pua_chars <= self.LEGACY_PUA)
if __name__ == '__main__':
unittest.main()
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