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@@ -1,53 +1,152 @@
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#!/usr/bin/python
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"""Test assumptions that Android relies on."""
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+import glob
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+import json
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import unittest
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+from fontTools import ttLib
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from nototools import coverage
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+from nototools import font_data
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+from nototools import render
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+from nototools import unicode_data
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-import common_tests
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-FONTS = common_tests.load_fonts(
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- ['out/v2/android/*.ttf'],
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- expected_count=18)
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+def load_fonts():
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+ """Load all fonts built for Android."""
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+ all_font_files = glob.glob('out/android/*.ttf')
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+ all_fonts = [ttLib.TTFont(font) for font in all_font_files]
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+ assert len(all_font_files) == 18
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+ return all_font_files, all_fonts
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-class TestItalicAngle(common_tests.TestItalicAngle):
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- loaded_fonts = FONTS
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+class TestVerticalMetrics(unittest.TestCase):
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+ """Test the vertical metrics of fonts."""
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-class TestMetaInfo(common_tests.TestMetaInfo):
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- loaded_fonts = FONTS
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+ def setUp(self):
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+ _, self.fonts = load_fonts()
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+
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+ def test_ymin_ymax(self):
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+ """Tests yMin and yMax to be equal to what Android expects."""
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+ for font in self.fonts:
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+ head_table = font['head']
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+ self.assertEqual(head_table.yMin, -555)
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+ self.assertEqual(head_table.yMax, 2163)
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-class TestNames(common_tests.TestNames):
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- loaded_fonts = FONTS
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- family_name = 'Roboto'
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+class TestDigitWidths(unittest.TestCase):
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+ """Tests the width of digits."""
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+ def setUp(self):
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+ _, self.fonts = load_fonts()
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+ self.digits = [
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+ 'zero', 'one', 'two', 'three', 'four',
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+ 'five', 'six', 'seven', 'eight', 'nine']
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+
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+ def test_digit_widths(self):
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+ """Tests all decimal digits to make sure they have the same width."""
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+ for font in self.fonts:
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+ hmtx_table = font['hmtx']
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+ widths = [hmtx_table[digit][0] for digit in self.digits]
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+ self.assertEqual(len(set(widths)), 1)
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-class TestDigitWidths(common_tests.TestDigitWidths):
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- loaded_fonts = FONTS
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+class TestCharacterCoverage(unittest.TestCase):
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+ """Tests character coverage."""
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-class TestCharacterCoverage(common_tests.TestCharacterCoverage):
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- loaded_fonts = FONTS
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+ def setUp(self):
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+ _, self.fonts = load_fonts()
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+ self.LEGACY_PUA = frozenset({0xEE01, 0xEE02, 0xF6C3})
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def test_lack_of_arrows_and_combining_keycap(self):
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- """Tests that arrows and combining keycap are not in Android fonts."""
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+ """Tests that arrows and combining keycap are not in the fonts."""
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for font in self.fonts:
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charset = coverage.character_set(font)
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self.assertNotIn(0x20E3, charset) # COMBINING ENCLOSING KEYCAP
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self.assertNotIn(0x2191, charset) # UPWARDS ARROW
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self.assertNotIn(0x2193, charset) # DOWNWARDS ARROW
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+ def test_lack_of_unassigned_chars(self):
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+ """Tests that unassigned characters are not in the fonts."""
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+ for font in self.fonts:
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+ charset = coverage.character_set(font)
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+ self.assertNotIn(0x2072, charset)
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+ self.assertNotIn(0x2073, charset)
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+ self.assertNotIn(0x208F, charset)
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-class TestLigatures(common_tests.TestLigatures):
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- loaded_fonts = FONTS
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+ def test_inclusion_of_sound_recording_copyright(self):
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+ """Tests that sound recording copyright symbol is in the fonts."""
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+ for font in self.fonts:
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+ charset = coverage.character_set(font)
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+ self.assertIn(
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+ 0x2117, charset, # SOUND RECORDING COPYRIGHT
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+ 'U+2117 not found in %s.' % font_data.font_name(font))
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+ def test_inclusion_of_legacy_pua(self):
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+ """Tests that legacy PUA characters remain in the fonts."""
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+ for font in self.fonts:
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+ charset = coverage.character_set(font)
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+ for char in self.LEGACY_PUA:
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+ self.assertIn(char, charset)
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-class TestVerticalMetrics(common_tests.TestVerticalMetrics):
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- loaded_fonts = FONTS
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+ def test_non_inclusion_of_other_pua(self):
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+ """Tests that there are not other PUA characters except legacy ones."""
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+ for font in self.fonts:
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+ charset = coverage.character_set(font)
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+ pua_chars = {
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+ char for char in charset
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+ if 0xE000 <= char <= 0xF8FF or 0xF0000 <= char <= 0x10FFFF}
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+ self.assertTrue(pua_chars <= self.LEGACY_PUA)
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+
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+
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+class TestSpacingMarks(unittest.TestCase):
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+ """Tests that spacing marks are indeed spacing."""
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+
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+ def setUp(self):
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+ self.font_files, _ = load_fonts()
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+ charset = coverage.character_set(self.font_files[0])
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+ self.marks_to_test = [char for char in charset
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+ if unicode_data.category(char) in ['Lm', 'Sk']]
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+ self.advance_cache = {}
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+
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+ def get_advances(self, text, font):
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+ """Get a list of horizontal advances for text rendered in a font."""
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+ try:
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+ return self.advance_cache[(text, font)]
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+ except KeyError:
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+ hb_output = render.run_harfbuzz_on_text(text, font, '')
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+ hb_output = json.loads(hb_output)
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+ advances = [glyph['ax'] for glyph in hb_output]
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+ self.advance_cache[(text, font)] = advances
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+ return advances
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+
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+ def test_individual_spacing_marks(self):
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+ """Tests that spacing marks are spacing by themselves."""
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+ for font in self.font_files:
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+ print 'Testing %s for stand-alone spacing marks...' % font
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+ for mark in self.marks_to_test:
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+ mark = unichr(mark)
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+ advances = self.get_advances(mark, font)
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+ assert len(advances) == 1
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+ self.assertNotEqual(advances[0], 0)
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+
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+ def test_spacing_marks_in_combination(self):
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+ """Tests that spacing marks do not combine with base letters."""
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+ for font in self.font_files:
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+ print 'Testing %s for spacing marks in combination...' % font
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+ for base_letter in (u'A\u00C6BCDEFGHIJKLMNO\u00D8\u01A0PRST'
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+ u'U\u01AFVWXYZ'
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+ u'a\u00E6bcdefghi\u0131j\u0237klmn'
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+ u'o\u00F8\u01A1prs\u017Ftu\u01B0vwxyz'
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+ u'\u03D2'):
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+ print 'Testing %s combinations' % base_letter
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+ for mark in self.marks_to_test:
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+ mark = unichr(mark)
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+ advances = self.get_advances(base_letter + mark, font)
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+ self.assertEqual(len(advances), 2,
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+ 'The sequence <%04X, %04X> combines, '
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+ 'but it should not' % (ord(base_letter), ord(mark)))
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if __name__ == '__main__':
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unittest.main()
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-
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James Godfrey-Kittle