1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
#!/usr/bin/python
"""Test general health of the fonts."""
import glob
import unittest
from fontTools import ttLib
from nototools import coverage
from nototools import font_data
def load_fonts():
"""Load all major fonts."""
all_font_files = (glob.glob('out/RobotoTTF/*.ttf')
+ glob.glob('out/RobotoCondensedTTF/*.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 TestItalicAngle(unittest.TestCase):
"""Test the italic angle of fonts."""
def setUp(self):
_, self.fonts = load_fonts()
def test_italic_angle(self):
"""Tests the italic angle of fonts to be correct."""
for font in self.fonts:
post_table = font['post']
if 'Italic' in font_data.font_name(font):
expected_angle = -12.0
else:
expected_angle = 0.0
self.assertEqual(post_table.italicAngle, expected_angle)
class TestMetaInfo(unittest.TestCase):
"""Test various meta information."""
def setUp(self):
_, self.fonts = load_fonts()
def test_mac_style(self):
"""Tests the macStyle of the fonts to be correct.
Bug: https://code.google.com/a/google.com/p/roboto/issues/detail?id=8
"""
for font in self.fonts:
font_name = font_data.font_name(font)
bold = ('Bold' in font_name) or ('Black' in font_name)
italic = 'Italic' in font_name
expected_mac_style = (italic << 1) | bold
self.assertEqual(font['head'].macStyle, expected_mac_style)
def test_fs_type(self):
"""Tests the fsType of the fonts to be 0.
fsType of 0 marks the font free for installation, embedding, etc.
Bug: https://code.google.com/a/google.com/p/roboto/issues/detail?id=29
"""
for font in self.fonts:
self.assertEqual(font['OS/2'].fsType, 0)
def test_vendor_id(self):
"""Tests the vendor ID of the fonts to be 'GOOG'."""
for font in self.fonts:
self.assertEqual(font['OS/2'].achVendID, 'GOOG')
class TestDigitWidths(unittest.TestCase):
"""Tests the width of digits."""
def setUp(self):
_, self.fonts = load_fonts()
self.digits = [
'zero', 'one', 'two', 'three', 'four',
'five', 'six', 'seven', 'eight', 'nine']
def test_digit_widths(self):
"""Tests all decimal digits to make sure they have the same width."""
for font in self.fonts:
hmtx_table = font['hmtx']
widths = [hmtx_table[digit][0] for digit in self.digits]
self.assertEqual(len(set(widths)), 1)
class TestCharacterCoverage(unittest.TestCase):
"""Tests character coverage."""
def setUp(self):
_, self.fonts = load_fonts()
def test_lack_of_unassigned_chars(self):
"""Tests that unassigned characters are not in the fonts."""
for font in self.fonts:
charset = coverage.character_set(font)
self.assertNotIn(0x2072, charset)
self.assertNotIn(0x2073, charset)
self.assertNotIn(0x208F, charset)
def test_inclusion_of_sound_recording_copyright(self):
"""Tests that sound recording copyright symbol is in the fonts."""
for font in self.fonts:
charset = coverage.character_set(font)
self.assertIn(
0x2117, charset, # SOUND RECORDING COPYRIGHT
'U+2117 not found in %s.' % font_data.font_name(font))
class TestSpacingMarks(unittest.TestCase):
"""Tests that spacing marks are indeed spacing."""
def setUp(self):
self.font_files, _ = load_fonts()
charset = coverage.character_set(self.font_files[0])
self.marks_to_test = [char for char in charset
if unicode_data.category(char) in ['Lm', 'Sk']]
self.advance_cache = {}
def get_advances(self, text, font):
"""Get a list of horizontal advances for text rendered in a font."""
try:
return self.advance_cache[(text, font)]
except KeyError:
hb_output = render.run_harfbuzz_on_text(text, font, '')
hb_output = json.loads(hb_output)
advances = [glyph['ax'] for glyph in hb_output]
self.advance_cache[(text, font)] = advances
return advances
def test_individual_spacing_marks(self):
"""Tests that spacing marks are spacing by themselves."""
for font in self.font_files:
print 'Testing %s for stand-alone spacing marks...' % font
for mark in self.marks_to_test:
mark = unichr(mark)
advances = self.get_advances(mark, font)
assert len(advances) == 1
self.assertNotEqual(advances[0], 0)
def test_spacing_marks_in_combination(self):
"""Tests that spacing marks do not combine with base letters."""
for font in self.font_files:
print 'Testing %s for spacing marks in combination...' % font
for base_letter in (u'A\u00C6BCDEFGHIJKLMNO\u00D8\u01A0PRST'
u'U\u01AFVWXYZ'
u'a\u00E6bcdefghi\u0131j\u0237klmn'
u'o\u00F8\u01A1prs\u017Ftu\u01B0vwxyz'
u'\u03D2'):
print 'Testing %s combinations' % base_letter
for mark in self.marks_to_test:
if mark == 0x02DE:
# Skip rhotic hook, as it's perhaps OK for it to form
# ligatures
continue
mark = unichr(mark)
advances = self.get_advances(base_letter + mark, font)
self.assertEqual(len(advances), 2,
'The sequence <%04X, %04X> combines, '
'but it should not' % (ord(base_letter), ord(mark)))
if __name__ == '__main__':
unittest.main()
|
