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Diffstat (limited to 'vendor/golang.org/x/image/font/sfnt/proprietary_test.go')
-rw-r--r-- | vendor/golang.org/x/image/font/sfnt/proprietary_test.go | 479 |
1 files changed, 479 insertions, 0 deletions
diff --git a/vendor/golang.org/x/image/font/sfnt/proprietary_test.go b/vendor/golang.org/x/image/font/sfnt/proprietary_test.go new file mode 100644 index 000000000..b105ee593 --- /dev/null +++ b/vendor/golang.org/x/image/font/sfnt/proprietary_test.go @@ -0,0 +1,479 @@ +// Copyright 2017 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package sfnt + +/* +This file contains opt-in tests for popular, high quality, proprietary fonts, +made by companies such as Adobe and Microsoft. These fonts are generally +available, but copies are not explicitly included in this repository due to +licensing differences or file size concerns. To opt-in, run: + +go test golang.org/x/image/font/sfnt -args -proprietary + +Not all tests pass out-of-the-box on all systems. For example, the Microsoft +Times New Roman font is downloadable gratis even on non-Windows systems, but as +per the ttf-mscorefonts-installer Debian package, this requires accepting an +End User License Agreement (EULA) and a CAB format decoder. These tests assume +that such fonts have already been installed. You may need to specify the +directories for these fonts: + +go test golang.org/x/image/font/sfnt -args -proprietary -adobeDir=/foo/bar/aFonts -microsoftDir=/foo/bar/mFonts + +To only run those tests for the Microsoft fonts: + +go test golang.org/x/image/font/sfnt -test.run=ProprietaryMicrosoft -args -proprietary +*/ + +// TODO: add Apple system fonts? Google fonts (Droid? Noto?)? Emoji fonts? + +// TODO: enable Apple/Microsoft tests by default on Darwin/Windows? + +import ( + "errors" + "flag" + "io/ioutil" + "path/filepath" + "testing" + + "golang.org/x/image/font" + "golang.org/x/image/math/fixed" +) + +var ( + proprietary = flag.Bool("proprietary", false, "test proprietary fonts not included in this repository") + + adobeDir = flag.String( + "adobeDir", + // This needs to be set explicitly. There is no default dir on Debian: + // https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=736680 + // + // Get the fonts from https://github.com/adobe-fonts, e.g.: + // - https://github.com/adobe-fonts/source-code-pro/releases/latest + // - https://github.com/adobe-fonts/source-han-sans/releases/latest + // - https://github.com/adobe-fonts/source-sans-pro/releases/latest + // + // Copy all of the TTF and OTF files to the one directory, such as + // $HOME/adobe-fonts, and pass that as the -adobeDir flag here. + "", + "directory name for the Adobe proprietary fonts", + ) + + microsoftDir = flag.String( + "microsoftDir", + "/usr/share/fonts/truetype/msttcorefonts", + "directory name for the Microsoft proprietary fonts", + ) +) + +func TestProprietaryAdobeSourceCodeProOTF(t *testing.T) { + testProprietary(t, "adobe", "SourceCodePro-Regular.otf", 1500, 2) +} + +func TestProprietaryAdobeSourceCodeProTTF(t *testing.T) { + testProprietary(t, "adobe", "SourceCodePro-Regular.ttf", 1500, 36) +} + +func TestProprietaryAdobeSourceHanSansSC(t *testing.T) { + testProprietary(t, "adobe", "SourceHanSansSC-Regular.otf", 65535, 2) +} + +func TestProprietaryAdobeSourceSansProOTF(t *testing.T) { + testProprietary(t, "adobe", "SourceSansPro-Regular.otf", 1800, 2) +} + +func TestProprietaryAdobeSourceSansProTTF(t *testing.T) { + testProprietary(t, "adobe", "SourceSansPro-Regular.ttf", 1800, 54) +} + +func TestProprietaryMicrosoftArial(t *testing.T) { + testProprietary(t, "microsoft", "Arial.ttf", 1200, 98) +} + +func TestProprietaryMicrosoftComicSansMS(t *testing.T) { + testProprietary(t, "microsoft", "Comic_Sans_MS.ttf", 550, 98) +} + +func TestProprietaryMicrosoftTimesNewRoman(t *testing.T) { + testProprietary(t, "microsoft", "Times_New_Roman.ttf", 1200, 98) +} + +func TestProprietaryMicrosoftWebdings(t *testing.T) { + testProprietary(t, "microsoft", "Webdings.ttf", 200, -1) +} + +// testProprietary tests that we can load every glyph in the named font. +// +// The exact number of glyphs in the font can differ across its various +// versions, but as a sanity check, there should be at least minNumGlyphs. +// +// While this package is a work-in-progress, not every glyph can be loaded. The +// firstUnsupportedGlyph argument, if non-negative, is the index of the first +// unsupported glyph in the font. This number should increase over time (or set +// negative), as the TODO's in this package are done. +func testProprietary(t *testing.T, proprietor, filename string, minNumGlyphs, firstUnsupportedGlyph int) { + if !*proprietary { + t.Skip("skipping proprietary font test") + } + + file, err := []byte(nil), error(nil) + switch proprietor { + case "adobe": + file, err = ioutil.ReadFile(filepath.Join(*adobeDir, filename)) + if err != nil { + t.Fatalf("%v\nPerhaps you need to set the -adobeDir=%v flag?", err, *adobeDir) + } + case "microsoft": + file, err = ioutil.ReadFile(filepath.Join(*microsoftDir, filename)) + if err != nil { + t.Fatalf("%v\nPerhaps you need to set the -microsoftDir=%v flag?", err, *microsoftDir) + } + default: + panic("unreachable") + } + f, err := Parse(file) + if err != nil { + t.Fatalf("Parse: %v", err) + } + ppem := fixed.Int26_6(f.UnitsPerEm()) + qualifiedFilename := proprietor + "/" + filename + var buf Buffer + + // Some of the tests below, such as which glyph index a particular rune + // maps to, can depend on the specific version of the proprietary font. If + // tested against a different version of that font, the test might (but not + // necessarily will) fail, even though the Go code is good. If so, log a + // message, but don't automatically fail (i.e. dont' call t.Fatalf). + gotVersion, err := f.Name(&buf, NameIDVersion) + if err != nil { + t.Fatalf("Name: %v", err) + } + wantVersion := proprietaryVersions[qualifiedFilename] + if gotVersion != wantVersion { + t.Logf("font version provided differs from the one the tests were written against:"+ + "\ngot %q\nwant %q", gotVersion, wantVersion) + } + + numGlyphs := f.NumGlyphs() + if numGlyphs < minNumGlyphs { + t.Fatalf("NumGlyphs: got %d, want at least %d", numGlyphs, minNumGlyphs) + } + + iMax := numGlyphs + if firstUnsupportedGlyph >= 0 { + iMax = firstUnsupportedGlyph + } + for i, numErrors := 0, 0; i < iMax; i++ { + if _, err := f.LoadGlyph(&buf, GlyphIndex(i), ppem, nil); err != nil { + t.Errorf("LoadGlyph(%d): %v", i, err) + numErrors++ + } + if numErrors == 10 { + t.Fatal("LoadGlyph: too many errors") + } + } + + for r, want := range proprietaryGlyphIndexTestCases[qualifiedFilename] { + got, err := f.GlyphIndex(&buf, r) + if err != nil { + t.Errorf("GlyphIndex(%q): %v", r, err) + continue + } + if got != want { + t.Errorf("GlyphIndex(%q): got %d, want %d", r, got, want) + continue + } + } + + for r, want := range proprietaryGlyphTestCases[qualifiedFilename] { + x, err := f.GlyphIndex(&buf, r) + if err != nil { + t.Errorf("GlyphIndex(%q): %v", r, err) + continue + } + got, err := f.LoadGlyph(&buf, x, ppem, nil) + if err != nil { + t.Errorf("LoadGlyph(%q): %v", r, err) + continue + } + if err := checkSegmentsEqual(got, want); err != nil { + t.Errorf("LoadGlyph(%q): %v", r, err) + continue + } + } + +kernLoop: + for _, tc := range proprietaryKernTestCases[qualifiedFilename] { + var indexes [2]GlyphIndex + for i := range indexes { + x, err := f.GlyphIndex(&buf, tc.runes[i]) + if x == 0 && err == nil { + err = errors.New("no glyph index found") + } + if err != nil { + t.Errorf("GlyphIndex(%q): %v", tc.runes[0], err) + continue kernLoop + } + indexes[i] = x + } + kern, err := f.Kern(&buf, indexes[0], indexes[1], tc.ppem, tc.hinting) + if err != nil { + t.Errorf("Kern(%q, %q, ppem=%d, hinting=%v): %v", + tc.runes[0], tc.runes[1], tc.ppem, tc.hinting, err) + continue + } + if got := Units(kern); got != tc.want { + t.Errorf("Kern(%q, %q, ppem=%d, hinting=%v): got %d, want %d", + tc.runes[0], tc.runes[1], tc.ppem, tc.hinting, got, tc.want) + continue + } + } +} + +// proprietaryVersions holds the expected version string of each proprietary +// font tested. If third parties such as Adobe or Microsoft update their fonts, +// and the tests subsequently fail, these versions should be updated too. +// +// Updates are expected to be infrequent. For example, as of 2017, the fonts +// installed by the Debian ttf-mscorefonts-installer package have last modified +// times no later than 2001. +var proprietaryVersions = map[string]string{ + "adobe/SourceCodePro-Regular.otf": "Version 2.030;PS 1.0;hotconv 16.6.51;makeotf.lib2.5.65220", + "adobe/SourceCodePro-Regular.ttf": "Version 2.030;PS 1.000;hotconv 16.6.51;makeotf.lib2.5.65220", + "adobe/SourceHanSansSC-Regular.otf": "Version 1.004;PS 1.004;hotconv 1.0.82;makeotf.lib2.5.63406", + "adobe/SourceSansPro-Regular.otf": "Version 2.020;PS 2.0;hotconv 1.0.86;makeotf.lib2.5.63406", + "adobe/SourceSansPro-Regular.ttf": "Version 2.020;PS 2.000;hotconv 1.0.86;makeotf.lib2.5.63406", + + "microsoft/Arial.ttf": "Version 2.82", + "microsoft/Comic_Sans_MS.ttf": "Version 2.10", + "microsoft/Times_New_Roman.ttf": "Version 2.82", + "microsoft/Webdings.ttf": "Version 1.03", +} + +// proprietaryGlyphIndexTestCases hold a sample of each font's rune to glyph +// index cmap. The numerical values can be verified by running the ttx tool. +var proprietaryGlyphIndexTestCases = map[string]map[rune]GlyphIndex{ + "adobe/SourceCodePro-Regular.otf": { + '\u0030': 877, // U+0030 DIGIT ZERO + '\u0041': 2, // U+0041 LATIN CAPITAL LETTER A + '\u0061': 28, // U+0061 LATIN SMALL LETTER A + '\u0104': 64, // U+0104 LATIN CAPITAL LETTER A WITH OGONEK + '\u0125': 323, // U+0125 LATIN SMALL LETTER H WITH CIRCUMFLEX + '\u01f4': 111, // U+01F4 LATIN CAPITAL LETTER G WITH ACUTE + '\u03a3': 623, // U+03A3 GREEK CAPITAL LETTER SIGMA + '\u2569': 1500, // U+2569 BOX DRAWINGS DOUBLE UP AND HORIZONTAL + '\U0001f100': 0, // U+0001F100 DIGIT ZERO FULL STOP + }, + "adobe/SourceCodePro-Regular.ttf": { + '\u0030': 877, // U+0030 DIGIT ZERO + '\u0041': 2, // U+0041 LATIN CAPITAL LETTER A + '\u01f4': 111, // U+01F4 LATIN CAPITAL LETTER G WITH ACUTE + }, + "adobe/SourceHanSansSC-Regular.otf": { + '\u0030': 17, // U+0030 DIGIT ZERO + '\u0041': 34, // U+0041 LATIN CAPITAL LETTER A + '\u00d7': 150, // U+00D7 MULTIPLICATION SIGN + '\u1100': 365, // U+1100 HANGUL CHOSEONG KIYEOK + '\u25ca': 1254, // U+25CA LOZENGE + '\u2e9c': 1359, // U+2E9C CJK RADICAL SUN + '\u304b': 1463, // U+304B HIRAGANA LETTER KA + '\u4e2d': 9893, // U+4E2D <CJK Ideograph>, δΈ + '\ua960': 47537, // U+A960 HANGUL CHOSEONG TIKEUT-MIEUM + '\ufb00': 58919, // U+FB00 LATIN SMALL LIGATURE FF + '\uffee': 59213, // U+FFEE HALFWIDTH WHITE CIRCLE + '\U0001f100': 59214, // U+0001F100 DIGIT ZERO FULL STOP + '\U0001f248': 59449, // U+0001F248 TORTOISE SHELL BRACKETED CJK UNIFIED IDEOGRAPH-6557 + '\U0002f9f4': 61768, // U+0002F9F4 CJK COMPATIBILITY IDEOGRAPH-2F9F4 + }, + "adobe/SourceSansPro-Regular.otf": { + '\u0041': 2, // U+0041 LATIN CAPITAL LETTER A + '\u03a3': 592, // U+03A3 GREEK CAPITAL LETTER SIGMA + '\u0435': 999, // U+0435 CYRILLIC SMALL LETTER IE + '\u2030': 1728, // U+2030 PER MILLE SIGN + }, + "adobe/SourceSansPro-Regular.ttf": { + '\u0041': 2, // U+0041 LATIN CAPITAL LETTER A + '\u03a3': 592, // U+03A3 GREEK CAPITAL LETTER SIGMA + '\u0435': 999, // U+0435 CYRILLIC SMALL LETTER IE + '\u2030': 1728, // U+2030 PER MILLE SIGN + }, + + "microsoft/Arial.ttf": { + '\u0041': 36, // U+0041 LATIN CAPITAL LETTER A + '\u00f1': 120, // U+00F1 LATIN SMALL LETTER N WITH TILDE + '\u0401': 556, // U+0401 CYRILLIC CAPITAL LETTER IO + '\u200d': 745, // U+200D ZERO WIDTH JOINER + '\u20ab': 1150, // U+20AB DONG SIGN + '\u2229': 320, // U+2229 INTERSECTION + '\u04e9': 1319, // U+04E9 CYRILLIC SMALL LETTER BARRED O + '\U0001f100': 0, // U+0001F100 DIGIT ZERO FULL STOP + }, + "microsoft/Comic_Sans_MS.ttf": { + '\u0041': 36, // U+0041 LATIN CAPITAL LETTER A + '\u03af': 573, // U+03AF GREEK SMALL LETTER IOTA WITH TONOS + }, + "microsoft/Times_New_Roman.ttf": { + '\u0041': 36, // U+0041 LATIN CAPITAL LETTER A + '\u0042': 37, // U+0041 LATIN CAPITAL LETTER B + '\u266a': 392, // U+266A EIGHTH NOTE + '\uf041': 0, // PRIVATE USE AREA + '\uf042': 0, // PRIVATE USE AREA + }, + "microsoft/Webdings.ttf": { + '\u0041': 0, // U+0041 LATIN CAPITAL LETTER A + '\u0042': 0, // U+0041 LATIN CAPITAL LETTER B + '\u266a': 0, // U+266A EIGHTH NOTE + '\uf041': 36, // PRIVATE USE AREA + '\uf042': 37, // PRIVATE USE AREA + }, +} + +// proprietaryGlyphTestCases hold a sample of each font's glyph vectors. The +// numerical values can be verified by running the ttx tool, remembering that: +// - for PostScript glyphs, ttx coordinates are relative, and hstem / vstem +// operators are hinting-related and can be ignored. +// - for TrueType glyphs, ttx coordinates are absolute, and consecutive +// off-curve points implies an on-curve point at the midpoint. +var proprietaryGlyphTestCases = map[string]map[rune][]Segment{ + "adobe/SourceSansPro-Regular.otf": { + ',': { + // - contour #0 + // 67 -170 rmoveto + moveTo(67, -170), + // 81 34 50 67 86 vvcurveto + cubeTo(148, -136, 198, -69, 198, 17), + // 60 -26 37 -43 -33 -28 -22 -36 -37 27 -20 32 3 4 0 1 3 vhcurveto + cubeTo(198, 77, 172, 114, 129, 114), + cubeTo(96, 114, 68, 92, 68, 56), + cubeTo(68, 19, 95, -1, 127, -1), + cubeTo(130, -1, 134, -1, 137, 0), + // 1 -53 -34 -44 -57 -25 rrcurveto + cubeTo(138, -53, 104, -97, 47, -122), + }, + 'Q': { + // - contour #0 + // 332 57 rmoveto + moveTo(332, 57), + // -117 -77 106 168 163 77 101 117 117 77 -101 -163 -168 -77 -106 -117 hvcurveto + cubeTo(215, 57, 138, 163, 138, 331), + cubeTo(138, 494, 215, 595, 332, 595), + cubeTo(449, 595, 526, 494, 526, 331), + cubeTo(526, 163, 449, 57, 332, 57), + // - contour #1 + // 201 -222 rmoveto + moveTo(533, -165), + // 39 35 7 8 20 hvcurveto + cubeTo(572, -165, 607, -158, 627, -150), + // -16 64 rlineto + lineTo(611, -86), + // -5 -18 -22 -4 -29 hhcurveto + cubeTo(593, -91, 571, -95, 542, -95), + // -71 -60 29 58 -30 hvcurveto + cubeTo(471, -95, 411, -66, 381, -8), + // 139 24 93 126 189 vvcurveto + cubeTo(520, 16, 613, 142, 613, 331), + // 209 -116 128 -165 -165 -115 -127 -210 -193 96 -127 143 -20 vhcurveto + cubeTo(613, 540, 497, 668, 332, 668), + cubeTo(167, 668, 52, 541, 52, 331), + cubeTo(52, 138, 148, 11, 291, -9), + // -90 38 83 -66 121 hhcurveto + cubeTo(329, -99, 412, -165, 533, -165), + }, + }, + + "microsoft/Arial.ttf": { + ',': { + // - contour #0 + moveTo(182, 0), + lineTo(182, 205), + lineTo(387, 205), + lineTo(387, 0), + quadTo(387, -113, 347, -182), + quadTo(307, -252, 220, -290), + lineTo(170, -213), + quadTo(227, -188, 254, -139), + quadTo(281, -91, 284, 0), + lineTo(182, 0), + }, + 'i': { + // - contour #0 + moveTo(136, 1259), + lineTo(136, 1466), + lineTo(316, 1466), + lineTo(316, 1259), + lineTo(136, 1259), + // - contour #1 + moveTo(136, 0), + lineTo(136, 1062), + lineTo(316, 1062), + lineTo(316, 0), + lineTo(136, 0), + }, + 'o': { + // - contour #0 + moveTo(68, 531), + quadTo(68, 826, 232, 968), + quadTo(369, 1086, 566, 1086), + quadTo(785, 1086, 924, 942), + quadTo(1063, 799, 1063, 546), + quadTo(1063, 341, 1001, 223), + quadTo(940, 106, 822, 41), + quadTo(705, -24, 566, -24), + quadTo(343, -24, 205, 119), + quadTo(68, 262, 68, 531), + // - contour #1 + moveTo(253, 531), + quadTo(253, 327, 342, 225), + quadTo(431, 124, 566, 124), + quadTo(700, 124, 789, 226), + quadTo(878, 328, 878, 537), + quadTo(878, 734, 788, 835), + quadTo(699, 937, 566, 937), + quadTo(431, 937, 342, 836), + quadTo(253, 735, 253, 531), + }, + }, +} + +type kernTestCase struct { + ppem fixed.Int26_6 + hinting font.Hinting + runes [2]rune + want Units +} + +// proprietaryKernTestCases hold a sample of each font's kerning pairs. The +// numerical values can be verified by running the ttx tool. +var proprietaryKernTestCases = map[string][]kernTestCase{ + "microsoft/Arial.ttf": { + {2048, font.HintingNone, [2]rune{'A', 'V'}, -152}, + // U+03B8 GREEK SMALL LETTER THETA + // U+03BB GREEK SMALL LETTER LAMDA + {2048, font.HintingNone, [2]rune{'\u03b8', '\u03bb'}, -39}, + {2048, font.HintingNone, [2]rune{'\u03bb', '\u03b8'}, -0}, + }, + "microsoft/Comic_Sans_MS.ttf": { + {2048, font.HintingNone, [2]rune{'A', 'V'}, 0}, + }, + "microsoft/Times_New_Roman.ttf": { + {768, font.HintingNone, [2]rune{'A', 'V'}, -99}, + {768, font.HintingFull, [2]rune{'A', 'V'}, -128}, + {2048, font.HintingNone, [2]rune{'A', 'A'}, 0}, + {2048, font.HintingNone, [2]rune{'A', 'T'}, -227}, + {2048, font.HintingNone, [2]rune{'A', 'V'}, -264}, + {2048, font.HintingNone, [2]rune{'T', 'A'}, -164}, + {2048, font.HintingNone, [2]rune{'T', 'T'}, 0}, + {2048, font.HintingNone, [2]rune{'T', 'V'}, 0}, + {2048, font.HintingNone, [2]rune{'V', 'A'}, -264}, + {2048, font.HintingNone, [2]rune{'V', 'T'}, 0}, + {2048, font.HintingNone, [2]rune{'V', 'V'}, 0}, + // U+0390 GREEK SMALL LETTER IOTA WITH DIALYTIKA AND TONOS + // U+0393 GREEK CAPITAL LETTER GAMMA + {2048, font.HintingNone, [2]rune{'\u0390', '\u0393'}, 0}, + {2048, font.HintingNone, [2]rune{'\u0393', '\u0390'}, 76}, + }, + "microsoft/Webdings.ttf": { + {2048, font.HintingNone, [2]rune{'\uf041', '\uf042'}, 0}, + }, +} |