mirror of
https://git.sr.ht/~eliasnaur/gio
synced 2026-07-01 07:35:40 +00:00
Elias Naur
698 lines
20 KiB
Go
698 lines
20 KiB
Go
package text
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import (
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"fmt"
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"math"
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"slices"
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"strconv"
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"testing"
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nsareg "eliasnaur.com/font/noto/sans/arabic/regular"
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"github.com/go-text/typesetting/di"
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"github.com/go-text/typesetting/font"
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"github.com/go-text/typesetting/language"
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"github.com/go-text/typesetting/shaping"
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"golang.org/x/image/font/gofont/goregular"
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"golang.org/x/image/math/fixed"
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giofont "gioui.org/font"
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"gioui.org/font/opentype"
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"gioui.org/io/system"
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)
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var english = system.Locale{
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Language: "EN",
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Direction: system.LTR,
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}
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var arabic = system.Locale{
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Language: "AR",
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Direction: system.RTL,
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}
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func testShaper(faces ...giofont.Face) *shaperImpl {
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ff := make([]FontFace, 0, len(faces))
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for _, face := range faces {
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ff = append(ff, FontFace{Face: face})
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}
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shaper := newShaperImpl(false, ff)
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return shaper
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}
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func TestEmptyString(t *testing.T) {
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ppem := fixed.I(200)
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ltrFace, _ := opentype.Parse(goregular.TTF)
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shaper := testShaper(ltrFace)
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lines := shaper.LayoutRunes(Parameters{
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PxPerEm: ppem,
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MaxWidth: 2000,
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Locale: english,
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}, []rune{})
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if len(lines.lines) == 0 {
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t.Fatalf("Layout returned no lines for empty string; expected 1")
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}
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l := lines.lines[0]
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if expected := fixed.Int26_6(12094); l.ascent != expected {
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t.Errorf("unexpected ascent for empty string: %v, expected %v", l.ascent, expected)
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}
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if expected := fixed.Int26_6(2700); l.descent != expected {
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t.Errorf("unexpected descent for empty string: %v, expected %v", l.descent, expected)
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}
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}
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func TestNoFaces(t *testing.T) {
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ppem := fixed.I(200)
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shaper := testShaper()
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// Ensure shaping text with no faces does not panic.
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shaper.LayoutRunes(Parameters{
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PxPerEm: ppem,
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MaxWidth: 2000,
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Locale: english,
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}, []rune("✨ⷽℎ↞⋇ⱜ⪫⢡⽛⣦␆Ⱨⳏ⳯⒛⭣╎⌞⟻⢇┃➡⬎⩱⸇ⷎ⟅▤⼶⇺⩳⎏⤬⬞ⴈ⋠⿶⢒₍☟⽂ⶦ⫰⭢⌹∼▀⾯⧂❽⩏ⓖ⟅⤔⍇␋⽓ₑ⢳⠑❂⊪⢘⽨⃯▴ⷿ"))
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}
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func TestAlignWidth(t *testing.T) {
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lines := []line{
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{width: fixed.I(50)},
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{width: fixed.I(75)},
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{width: fixed.I(25)},
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}
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for _, minWidth := range []int{0, 50, 100} {
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width := alignWidth(minWidth, lines)
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if width < minWidth {
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t.Errorf("expected width >= %d, got %d", minWidth, width)
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}
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}
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}
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func TestShapingAlignWidth(t *testing.T) {
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ppem := fixed.I(10)
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ltrFace, _ := opentype.Parse(goregular.TTF)
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shaper := testShaper(ltrFace)
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type testcase struct {
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name string
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minWidth, maxWidth int
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expected int
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str string
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}
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for _, tc := range []testcase{
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{
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name: "zero min",
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maxWidth: 100,
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str: "a\nb\nc",
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expected: 22,
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},
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{
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name: "min == max",
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minWidth: 100,
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maxWidth: 100,
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str: "a\nb\nc",
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expected: 100,
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},
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{
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name: "min < max",
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minWidth: 50,
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maxWidth: 100,
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str: "a\nb\nc",
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expected: 50,
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},
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{
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name: "min < max, text > min",
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minWidth: 50,
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maxWidth: 100,
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str: "aphabetic\nb\nc",
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expected: 60,
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},
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} {
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t.Run(tc.name, func(t *testing.T) {
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lines := shaper.LayoutString(Parameters{
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PxPerEm: ppem,
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MinWidth: tc.minWidth,
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MaxWidth: tc.maxWidth,
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Locale: english,
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}, tc.str)
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if lines.alignWidth != tc.expected {
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t.Errorf("expected line alignWidth to be %d, got %d", tc.expected, lines.alignWidth)
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}
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})
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}
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}
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// TestNewlineSynthesis ensures that the shaper correctly inserts synthetic glyphs
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// representing newline runes.
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func TestNewlineSynthesis(t *testing.T) {
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ppem := fixed.I(10)
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ltrFace, _ := opentype.Parse(goregular.TTF)
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rtlFace, _ := opentype.Parse(nsareg.TTF)
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shaper := testShaper(ltrFace, rtlFace)
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type testcase struct {
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name string
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locale system.Locale
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txt string
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}
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for _, tc := range []testcase{
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{
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name: "ltr bidi newline in rtl segment",
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locale: english,
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txt: "The quick سماء שלום لا fox تمط שלום\n",
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},
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{
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name: "ltr bidi newline in ltr segment",
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locale: english,
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txt: "The quick سماء שלום لا fox\n",
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},
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{
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name: "rtl bidi newline in ltr segment",
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locale: arabic,
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txt: "الحب سماء brown привет fox تمط jumps\n",
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},
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{
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name: "rtl bidi newline in rtl segment",
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locale: arabic,
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txt: "الحب سماء brown привет fox تمط\n",
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},
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} {
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t.Run(tc.name, func(t *testing.T) {
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doc := shaper.LayoutRunes(Parameters{
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PxPerEm: ppem,
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MaxWidth: 200,
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Locale: tc.locale,
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}, []rune(tc.txt))
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for lineIdx, line := range doc.lines {
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lastRunIdx := len(line.runs) - 1
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lastRun := line.runs[lastRunIdx]
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lastGlyphIdx := len(lastRun.Glyphs) - 1
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if lastRun.Direction.Progression() == system.TowardOrigin {
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lastGlyphIdx = 0
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}
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glyph := lastRun.Glyphs[lastGlyphIdx]
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if glyph.glyphCount != 0 {
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t.Errorf("expected synthetic newline on line %d, run %d, glyph %d", lineIdx, lastRunIdx, lastGlyphIdx)
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}
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for runIdx, run := range line.runs {
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for glyphIdx, glyph := range run.Glyphs {
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if runIdx == lastRunIdx && glyphIdx == lastGlyphIdx {
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continue
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}
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if glyph.glyphCount == 0 {
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t.Errorf("found invalid synthetic newline on line %d, run %d, glyph %d", lineIdx, runIdx, glyphIdx)
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}
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}
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}
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}
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if t.Failed() {
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printLinePositioning(t, doc.lines, nil)
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}
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})
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}
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}
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// simpleGlyph returns a simple square glyph with the provided cluster
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// value.
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func simpleGlyph(cluster int) shaping.Glyph {
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return complexGlyph(cluster, 1, 1)
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}
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// ligatureGlyph returns a simple square glyph with the provided cluster
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// value and number of runes.
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func ligatureGlyph(cluster, runes int) shaping.Glyph {
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return complexGlyph(cluster, runes, 1)
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}
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// expansionGlyph returns a simple square glyph with the provided cluster
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// value and number of glyphs.
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func expansionGlyph(cluster, glyphs int) shaping.Glyph {
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return complexGlyph(cluster, 1, glyphs)
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}
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// complexGlyph returns a simple square glyph with the provided cluster
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// value, number of associated runes, and number of glyphs in the cluster.
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func complexGlyph(cluster, runes, glyphs int) shaping.Glyph {
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return shaping.Glyph{
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Width: fixed.I(10),
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Height: fixed.I(10),
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XAdvance: fixed.I(10),
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YAdvance: fixed.I(10),
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YBearing: fixed.I(10),
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ClusterIndex: cluster,
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GlyphCount: glyphs,
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RuneCount: runes,
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}
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}
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// copyLines performs a deep copy of the provided lines. This is necessary if you
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// want to use the line wrapper again while also using the lines.
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func copyLines(lines []shaping.Line) []shaping.Line {
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out := make([]shaping.Line, len(lines))
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for lineIdx, line := range lines {
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lineCopy := make([]shaping.Output, len(line))
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for runIdx, run := range line {
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lineCopy[runIdx] = run
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lineCopy[runIdx].Glyphs = slices.Clone(run.Glyphs)
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}
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out[lineIdx] = lineCopy
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}
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return out
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}
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// makeTestText creates a simple and complex(bidi) sample of shaped text at the given
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// font size and wrapped to the given line width. The runeLimit, if nonzero,
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// truncates the sample text to ensure shorter output for expensive tests.
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func makeTestText(shaper *shaperImpl, primaryDir system.TextDirection, fontSize, lineWidth, runeLimit int) (simpleSample, complexSample []shaping.Line) {
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ltrFace, _ := opentype.Parse(goregular.TTF)
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rtlFace, _ := opentype.Parse(nsareg.TTF)
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if shaper == nil {
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shaper = testShaper(ltrFace, rtlFace)
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}
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ltrSource := "The quick brown fox jumps over the lazy dog."
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rtlSource := "الحب سماء لا تمط غير الأحلام"
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// bidiSource is crafted to contain multiple consecutive RTL runs (by
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// changing scripts within the RTL).
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bidiSource := "The quick سماء שלום لا fox تمط שלום غير the lazy dog."
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// bidi2Source is crafted to contain multiple consecutive LTR runs (by
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// changing scripts within the LTR).
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bidi2Source := "الحب سماء brown привет fox تمط jumps привет over غير الأحلام"
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locale := english
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simpleSource := ltrSource
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complexSource := bidiSource
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if primaryDir == system.RTL {
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simpleSource = rtlSource
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complexSource = bidi2Source
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locale = arabic
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}
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if runeLimit != 0 {
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simpleRunes := []rune(simpleSource)
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complexRunes := []rune(complexSource)
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if runeLimit < len(simpleRunes) {
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ltrSource = string(simpleRunes[:runeLimit])
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}
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if runeLimit < len(complexRunes) {
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rtlSource = string(complexRunes[:runeLimit])
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}
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}
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simpleText, _ := shaper.shapeAndWrapText(Parameters{
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PxPerEm: fixed.I(fontSize),
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MaxWidth: lineWidth,
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Locale: locale,
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}, []rune(simpleSource))
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simpleText = copyLines(simpleText)
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complexText, _ := shaper.shapeAndWrapText(Parameters{
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PxPerEm: fixed.I(fontSize),
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MaxWidth: lineWidth,
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Locale: locale,
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}, []rune(complexSource))
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complexText = copyLines(complexText)
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testShaper(rtlFace, ltrFace)
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return simpleText, complexText
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}
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func fixedAbs(a fixed.Int26_6) fixed.Int26_6 {
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if a < 0 {
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a = -a
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}
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return a
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}
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func TestToLine(t *testing.T) {
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ltrFace, _ := opentype.Parse(goregular.TTF)
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rtlFace, _ := opentype.Parse(nsareg.TTF)
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shaper := testShaper(ltrFace, rtlFace)
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ltr, bidi := makeTestText(shaper, system.LTR, 16, 100, 0)
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rtl, bidi2 := makeTestText(shaper, system.RTL, 16, 100, 0)
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_, bidiWide := makeTestText(shaper, system.LTR, 16, 200, 0)
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_, bidi2Wide := makeTestText(shaper, system.RTL, 16, 200, 0)
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type testcase struct {
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name string
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lines []shaping.Line
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// Dominant text direction.
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dir system.TextDirection
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}
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for _, tc := range []testcase{
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{
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name: "ltr",
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lines: ltr,
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dir: system.LTR,
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},
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{
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name: "rtl",
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lines: rtl,
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dir: system.RTL,
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},
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{
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name: "bidi",
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lines: bidi,
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dir: system.LTR,
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},
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{
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name: "bidi2",
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lines: bidi2,
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dir: system.RTL,
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},
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{
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name: "bidi_wide",
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lines: bidiWide,
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dir: system.LTR,
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},
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{
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name: "bidi2_wide",
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lines: bidi2Wide,
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dir: system.RTL,
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},
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} {
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t.Run(tc.name, func(t *testing.T) {
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// We expect:
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// - Line dimensions to be populated.
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// - Line direction to be populated.
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// - Runs to be ordered from lowest runes first.
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// - Runs to have widths matching the input.
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// - Runs to have the same total number of glyphs/runes as the input.
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runesSeen := Range{}
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shaper := testShaper(ltrFace, rtlFace)
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for i, input := range tc.lines {
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seenRun := make([]bool, len(input))
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inputLowestRuneOffset := math.MaxInt
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totalInputGlyphs := 0
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totalInputRunes := 0
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for _, run := range input {
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if run.Runes.Offset < inputLowestRuneOffset {
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inputLowestRuneOffset = run.Runes.Offset
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}
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totalInputGlyphs += len(run.Glyphs)
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totalInputRunes += run.Runes.Count
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}
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output := toLine(shaper.faceToIndex, input, tc.dir)
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if output.direction != tc.dir {
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t.Errorf("line %d: expected direction %v, got %v", i, tc.dir, output.direction)
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}
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totalRunWidth := fixed.I(0)
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totalLineGlyphs := 0
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totalLineRunes := 0
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for k, run := range output.runs {
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seenRun[run.VisualPosition] = true
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if output.visualOrder[run.VisualPosition] != k {
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t.Errorf("line %d, run %d: run.VisualPosition=%d, but line.VisualOrder[%d]=%d(should be %d)", i, k, run.VisualPosition, run.VisualPosition, output.visualOrder[run.VisualPosition], k)
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}
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if run.Runes.Offset != totalLineRunes {
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t.Errorf("line %d, run %d: expected Runes.Offset to be %d, got %d", i, k, totalLineRunes, run.Runes.Offset)
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}
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runGlyphCount := len(run.Glyphs)
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if inputGlyphs := len(input[k].Glyphs); runGlyphCount != inputGlyphs {
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t.Errorf("line %d, run %d: expected %d glyphs, found %d", i, k, inputGlyphs, runGlyphCount)
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}
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runRuneCount := 0
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currentCluster := -1
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for _, g := range run.Glyphs {
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if g.clusterIndex != currentCluster {
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runRuneCount += g.runeCount
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currentCluster = g.clusterIndex
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}
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}
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if run.Runes.Count != runRuneCount {
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t.Errorf("line %d, run %d: expected %d runes, counted %d", i, k, run.Runes.Count, runRuneCount)
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}
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runesSeen.Count += run.Runes.Count
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totalRunWidth += fixedAbs(run.Advance)
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totalLineGlyphs += len(run.Glyphs)
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totalLineRunes += run.Runes.Count
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}
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if output.runeCount != totalInputRunes {
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t.Errorf("line %d: input had %d runes, only counted %d", i, totalInputRunes, output.runeCount)
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}
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if totalLineGlyphs != totalInputGlyphs {
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t.Errorf("line %d: input had %d glyphs, only counted %d", i, totalInputRunes, totalLineGlyphs)
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}
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if totalRunWidth != output.width {
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t.Errorf("line %d: expected width %d, got %d", i, totalRunWidth, output.width)
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}
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for runIndex, seen := range seenRun {
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if !seen {
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t.Errorf("line %d, run %d missing from runs VisualPosition fields", i, runIndex)
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}
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}
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}
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lastLine := tc.lines[len(tc.lines)-1]
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maxRunes := 0
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for _, run := range lastLine {
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if run.Runes.Count+run.Runes.Offset > maxRunes {
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maxRunes = run.Runes.Count + run.Runes.Offset
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}
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}
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if runesSeen.Count != maxRunes {
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t.Errorf("input covered %d runes, output only covers %d", maxRunes, runesSeen.Count)
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}
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})
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}
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}
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func FuzzLayout(f *testing.F) {
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ltrFace, _ := opentype.Parse(goregular.TTF)
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rtlFace, _ := opentype.Parse(nsareg.TTF)
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f.Add("د عرمثال dstي met لم aqل جدmوpمg lرe dرd لو عل ميrةsdiduntut lab renنيتذدagلaaiua.ئPocttأior رادرsاي mيrbلmnonaيdتد ماةعcلخ.", true, false, uint8(10), uint16(200))
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shaper := testShaper(ltrFace, rtlFace)
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f.Fuzz(func(t *testing.T, txt string, rtl bool, truncate bool, fontSize uint8, width uint16) {
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locale := system.Locale{
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Direction: system.LTR,
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}
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if rtl {
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locale.Direction = system.RTL
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}
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if fontSize < 1 {
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fontSize = 1
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}
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maxLines := 0
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if truncate {
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maxLines = 1
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}
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lines := shaper.LayoutRunes(Parameters{
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PxPerEm: fixed.I(int(fontSize)),
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MaxWidth: int(width),
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MaxLines: maxLines,
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Locale: locale,
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}, []rune(txt))
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validateLines(t, lines.lines, len([]rune(txt)))
|
|
})
|
|
}
|
|
|
|
func validateLines(t *testing.T, lines []line, expectedRuneCount int) {
|
|
t.Helper()
|
|
runesSeen := 0
|
|
for i, line := range lines {
|
|
totalRunWidth := fixed.I(0)
|
|
totalLineGlyphs := 0
|
|
lineRunesSeen := 0
|
|
for k, run := range line.runs {
|
|
if line.visualOrder[run.VisualPosition] != k {
|
|
t.Errorf("line %d, run %d: run.VisualPosition=%d, but line.VisualOrder[%d]=%d(should be %d)", i, k, run.VisualPosition, run.VisualPosition, line.visualOrder[run.VisualPosition], k)
|
|
}
|
|
if run.Runes.Offset != lineRunesSeen {
|
|
t.Errorf("line %d, run %d: expected Runes.Offset to be %d, got %d", i, k, lineRunesSeen, run.Runes.Offset)
|
|
}
|
|
runRuneCount := 0
|
|
currentCluster := -1
|
|
for _, g := range run.Glyphs {
|
|
if g.clusterIndex != currentCluster {
|
|
runRuneCount += g.runeCount
|
|
currentCluster = g.clusterIndex
|
|
}
|
|
}
|
|
if run.Runes.Count != runRuneCount {
|
|
t.Errorf("line %d, run %d: expected %d runes, counted %d", i, k, run.Runes.Count, runRuneCount)
|
|
}
|
|
lineRunesSeen += run.Runes.Count
|
|
totalRunWidth += fixedAbs(run.Advance)
|
|
totalLineGlyphs += len(run.Glyphs)
|
|
}
|
|
if totalRunWidth != line.width {
|
|
t.Errorf("line %d: expected width %d, got %d", i, line.width, totalRunWidth)
|
|
}
|
|
runesSeen += lineRunesSeen
|
|
}
|
|
if runesSeen != expectedRuneCount {
|
|
t.Errorf("input covered %d runes, output only covers %d", expectedRuneCount, runesSeen)
|
|
}
|
|
}
|
|
|
|
// TestTextAppend ensures that appending two texts together correctly updates the new lines'
|
|
// y offsets.
|
|
func TestTextAppend(t *testing.T) {
|
|
ltrFace, _ := opentype.Parse(goregular.TTF)
|
|
rtlFace, _ := opentype.Parse(nsareg.TTF)
|
|
|
|
shaper := testShaper(ltrFace, rtlFace)
|
|
|
|
text1 := shaper.LayoutString(Parameters{
|
|
PxPerEm: fixed.I(14),
|
|
MaxWidth: 200,
|
|
Locale: english,
|
|
}, "د عرمثال dstي met لم aqل جدmوpمg lرe dرd لو عل ميrةsdiduntut lab renنيتذدagلaaiua.ئPocttأior رادرsاي mيrbلmnonaيdتد ماةعcلخ.")
|
|
text2 := shaper.LayoutString(Parameters{
|
|
PxPerEm: fixed.I(14),
|
|
MaxWidth: 200,
|
|
Locale: english,
|
|
}, "د عرمثال dstي met لم aqل جدmوpمg lرe dرd لو عل ميrةsdiduntut lab renنيتذدagلaaiua.ئPocttأior رادرsاي mيrbلmnonaيdتد ماةعcلخ.")
|
|
|
|
text1.append(text2)
|
|
curY := math.MinInt
|
|
for lineNum, line := range text1.lines {
|
|
yOff := line.yOffset
|
|
if yOff <= curY {
|
|
t.Errorf("lines[%d] has y offset %d, <= to previous %d", lineNum, yOff, curY)
|
|
}
|
|
curY = yOff
|
|
}
|
|
}
|
|
|
|
func TestGlyphIDPacking(t *testing.T) {
|
|
const maxPPem = fixed.Int26_6((1 << sizebits) - 1)
|
|
type testcase struct {
|
|
name string
|
|
ppem fixed.Int26_6
|
|
faceIndex int
|
|
gid font.GID
|
|
expected GlyphID
|
|
}
|
|
for _, tc := range []testcase{
|
|
{
|
|
name: "zero value",
|
|
},
|
|
{
|
|
name: "10 ppem faceIdx 1 GID 5",
|
|
ppem: fixed.I(10),
|
|
faceIndex: 1,
|
|
gid: 5,
|
|
expected: 284223755780101,
|
|
},
|
|
{
|
|
name: maxPPem.String() + " ppem faceIdx " + strconv.Itoa(math.MaxUint16) + " GID " + fmt.Sprintf("%d", int64(math.MaxUint32)),
|
|
ppem: maxPPem,
|
|
faceIndex: math.MaxUint16,
|
|
gid: math.MaxUint32,
|
|
expected: 18446744073709551615,
|
|
},
|
|
} {
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
actual := newGlyphID(tc.ppem, tc.faceIndex, tc.gid)
|
|
if actual != tc.expected {
|
|
t.Errorf("expected %d, got %d", tc.expected, actual)
|
|
}
|
|
actualPPEM, actualFaceIdx, actualGID := splitGlyphID(actual)
|
|
if actualPPEM != tc.ppem {
|
|
t.Errorf("expected ppem %d, got %d", tc.ppem, actualPPEM)
|
|
}
|
|
if actualFaceIdx != tc.faceIndex {
|
|
t.Errorf("expected faceIdx %d, got %d", tc.faceIndex, actualFaceIdx)
|
|
}
|
|
if actualGID != tc.gid {
|
|
t.Errorf("expected gid %d, got %d", tc.gid, actualGID)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
// TestArabicDiacriticClustering verifies that Arabic diacritics (which usually have
|
|
// script 'Inherited') are correctly clustered with their base Arabic letters,
|
|
// rather than being split into a separate shaping run.
|
|
func TestArabicDiacriticClustering(t *testing.T) {
|
|
tests := []struct {
|
|
name string
|
|
input []rune
|
|
wantRuns int
|
|
wantScript language.Script
|
|
wantDirection di.Direction
|
|
}{
|
|
{
|
|
name: "Arabic Letter + Diacritic",
|
|
// \u0628 => BEH
|
|
// \u0650 => KASRA (Diacritic)
|
|
input: []rune{'\u0628', '\u0650'},
|
|
wantRuns: 1,
|
|
wantScript: language.Arabic,
|
|
wantDirection: di.DirectionRTL,
|
|
},
|
|
{
|
|
name: "Arabic Word with Multiple Diacritics",
|
|
input: []rune{
|
|
'\u0628', // BEH
|
|
'\u0650', // KASRA
|
|
'\u0633', // SEEN
|
|
'\u0652', // SUKUN
|
|
'\u0645', // MEEM
|
|
'\u0650', // KASRA
|
|
},
|
|
wantRuns: 1,
|
|
wantScript: language.Arabic,
|
|
wantDirection: di.DirectionRTL,
|
|
},
|
|
{
|
|
name: "Mixed Script (CONTROL Case) #1",
|
|
// Arabic Letter + Latin Letter
|
|
// THESE MUST SPLIT TO 2.
|
|
input: []rune{'\u0628', 'A'},
|
|
wantRuns: 2,
|
|
wantScript: language.Arabic,
|
|
wantDirection: di.DirectionRTL,
|
|
},
|
|
{
|
|
name: "Mixed Script (CONTROL Case) #2",
|
|
// Arabic Letter + Diacritic + Diacritic + Latin Letter + Arabic Letter + Diacritic
|
|
// THESE MUST SPLIT TO 3.
|
|
input: []rune{'\u0628', '\u0651', '\u0650', 'A', '\u0628', '\u0650'},
|
|
wantRuns: 3,
|
|
wantScript: language.Arabic,
|
|
wantDirection: di.DirectionRTL,
|
|
},
|
|
{
|
|
name: "Mixed Script (A little 'stress' test)",
|
|
// Latin 's' + Arabic Kasra + Latin 'r' + Arabic Fatha
|
|
// this technically valid unicode!
|
|
// the diacritics should inherit "Latin"
|
|
input: []rune{'s', '\u0651', '\u0650', 'r', '\u064E'},
|
|
wantRuns: 1,
|
|
wantScript: language.Latin,
|
|
wantDirection: di.DirectionLTR,
|
|
},
|
|
}
|
|
|
|
for _, tt := range tests {
|
|
t.Run(tt.name, func(t *testing.T) {
|
|
inputs := []shaping.Input{{
|
|
Text: tt.input,
|
|
RunStart: 0,
|
|
RunEnd: len(tt.input),
|
|
Direction: tt.wantDirection,
|
|
Script: language.Arabic,
|
|
Face: nil, // face doesn't really matter for splitting anyway
|
|
Size: fixed.I(10),
|
|
}}
|
|
|
|
got := splitByScript(inputs, tt.wantDirection, nil)
|
|
|
|
if len(got) != tt.wantRuns {
|
|
t.Fatalf("splitByScript produced %d runs, expected %d. \nRun details: %+v", len(got), tt.wantRuns, got)
|
|
}
|
|
|
|
// this is for the single-run cases
|
|
// we need to verify the integrity of the single run
|
|
// to ensure
|
|
// - the truncation didn't happen early on (when first hitting a diacritic)
|
|
// - and the right dominant script label was used
|
|
if tt.wantRuns == 1 {
|
|
run := got[0]
|
|
if run.RunEnd != len(tt.input) {
|
|
t.Errorf("Run truncated early. End = %d, expected %d", run.RunEnd, len(tt.input))
|
|
}
|
|
if run.Script != tt.wantScript {
|
|
t.Errorf("Run assigned wrong script. Got %s, expected %s", run.Script, tt.wantScript)
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|