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// Copyright 2015 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 width
import (
"testing"
"golang.org/x/text/internal/testtext"
)
const (
loSurrogate = 0xD800
hiSurrogate = 0xDFFF
)
func TestTables(t *testing.T) {
testtext.SkipIfNotLong(t)
runes := map[rune]Kind{}
getWidthData(func(r rune, tag elem, _ rune) {
runes[r] = tag.kind()
})
for r := rune(0); r < 0x10FFFF; r++ {
if loSurrogate <= r && r <= hiSurrogate {
continue
}
p := LookupRune(r)
if got, want := p.Kind(), runes[r]; got != want {
t.Errorf("Kind of %U was %s; want %s.", r, got, want)
}
want, mapped := foldRune(r)
if got := p.Folded(); (got == 0) == mapped || got != 0 && got != want {
t.Errorf("Folded(%U) = %U; want %U", r, got, want)
}
want, mapped = widenRune(r)
if got := p.Wide(); (got == 0) == mapped || got != 0 && got != want {
t.Errorf("Wide(%U) = %U; want %U", r, got, want)
}
want, mapped = narrowRune(r)
if got := p.Narrow(); (got == 0) == mapped || got != 0 && got != want {
t.Errorf("Narrow(%U) = %U; want %U", r, got, want)
}
}
}
// TestAmbiguous verifies that ambiguous runes with a mapping always map to
// a halfwidth rune.
func TestAmbiguous(t *testing.T) {
for r, m := range mapRunes {
if m.e != tagAmbiguous {
continue
}
if k := mapRunes[m.r].e.kind(); k != EastAsianHalfwidth {
t.Errorf("Rune %U is ambiguous and maps to a rune of type %v", r, k)
}
}
}
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