60 lines
1.5 KiB
Go
60 lines
1.5 KiB
Go
// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package width
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import (
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"testing"
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"golang.org/x/text/internal/testtext"
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)
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const (
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loSurrogate = 0xD800
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hiSurrogate = 0xDFFF
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)
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func TestTables(t *testing.T) {
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testtext.SkipIfNotLong(t)
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runes := map[rune]Kind{}
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getWidthData(func(r rune, tag elem, _ rune) {
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runes[r] = tag.kind()
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})
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for r := rune(0); r < 0x10FFFF; r++ {
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if loSurrogate <= r && r <= hiSurrogate {
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continue
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}
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p := LookupRune(r)
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if got, want := p.Kind(), runes[r]; got != want {
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t.Errorf("Kind of %U was %s; want %s.", r, got, want)
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}
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want, mapped := foldRune(r)
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if got := p.Folded(); (got == 0) == mapped || got != 0 && got != want {
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t.Errorf("Folded(%U) = %U; want %U", r, got, want)
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}
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want, mapped = widenRune(r)
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if got := p.Wide(); (got == 0) == mapped || got != 0 && got != want {
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t.Errorf("Wide(%U) = %U; want %U", r, got, want)
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}
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want, mapped = narrowRune(r)
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if got := p.Narrow(); (got == 0) == mapped || got != 0 && got != want {
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t.Errorf("Narrow(%U) = %U; want %U", r, got, want)
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}
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}
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}
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// TestAmbiguous verifies that that ambiguous runes with a mapping always map to
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// a halfwidth rune.
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func TestAmbiguous(t *testing.T) {
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for r, m := range mapRunes {
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if m.e != tagAmbiguous {
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continue
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}
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if k := mapRunes[m.r].e.kind(); k != EastAsianHalfwidth {
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t.Errorf("Rune %U is ambiguous and maps to a rune of type %v", r, k)
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}
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}
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}
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