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// Copyright 2010 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 utf16_test
import (
"reflect"
"testing"
"unicode"
. "unicode/utf16"
)
// Validate the constants redefined from unicode.
func TestConstants(t *testing.T) {
if MaxRune != unicode.MaxRune {
t.Errorf("utf16.maxRune is wrong: %x should be %x", MaxRune, unicode.MaxRune)
}
if ReplacementChar != unicode.ReplacementChar {
t.Errorf("utf16.replacementChar is wrong: %x should be %x", ReplacementChar, unicode.ReplacementChar)
}
}
type encodeTest struct {
in []rune
out []uint16
}
var encodeTests = []encodeTest{
{[]rune{1, 2, 3, 4}, []uint16{1, 2, 3, 4}},
{[]rune{0xffff, 0x10000, 0x10001, 0x12345, 0x10ffff},
[]uint16{0xffff, 0xd800, 0xdc00, 0xd800, 0xdc01, 0xd808, 0xdf45, 0xdbff, 0xdfff}},
{[]rune{'a', 'b', 0xd7ff, 0xd800, 0xdfff, 0xe000, 0x110000, -1},
[]uint16{'a', 'b', 0xd7ff, 0xfffd, 0xfffd, 0xe000, 0xfffd, 0xfffd}},
}
func TestEncode(t *testing.T) {
for _, tt := range encodeTests {
out := Encode(tt.in)
if !reflect.DeepEqual(out, tt.out) {
t.Errorf("Encode(%x) = %x; want %x", tt.in, out, tt.out)
}
}
}
func TestEncodeRune(t *testing.T) {
for i, tt := range encodeTests {
j := 0
for _, r := range tt.in {
r1, r2 := EncodeRune(r)
if r < 0x10000 || r > unicode.MaxRune {
if j >= len(tt.out) {
t.Errorf("#%d: ran out of tt.out", i)
break
}
if r1 != unicode.ReplacementChar || r2 != unicode.ReplacementChar {
t.Errorf("EncodeRune(%#x) = %#x, %#x; want 0xfffd, 0xfffd", r, r1, r2)
}
j++
} else {
if j+1 >= len(tt.out) {
t.Errorf("#%d: ran out of tt.out", i)
break
}
if r1 != rune(tt.out[j]) || r2 != rune(tt.out[j+1]) {
t.Errorf("EncodeRune(%#x) = %#x, %#x; want %#x, %#x", r, r1, r2, tt.out[j], tt.out[j+1])
}
j += 2
dec := DecodeRune(r1, r2)
if dec != r {
t.Errorf("DecodeRune(%#x, %#x) = %#x; want %#x", r1, r2, dec, r)
}
}
}
if j != len(tt.out) {
t.Errorf("#%d: EncodeRune didn't generate enough output", i)
}
}
}
type decodeTest struct {
in []uint16
out []rune
}
var decodeTests = []decodeTest{
{[]uint16{1, 2, 3, 4}, []rune{1, 2, 3, 4}},
{[]uint16{0xffff, 0xd800, 0xdc00, 0xd800, 0xdc01, 0xd808, 0xdf45, 0xdbff, 0xdfff},
[]rune{0xffff, 0x10000, 0x10001, 0x12345, 0x10ffff}},
{[]uint16{0xd800, 'a'}, []rune{0xfffd, 'a'}},
{[]uint16{0xdfff}, []rune{0xfffd}},
}
func TestDecode(t *testing.T) {
for _, tt := range decodeTests {
out := Decode(tt.in)
if !reflect.DeepEqual(out, tt.out) {
t.Errorf("Decode(%x) = %x; want %x", tt.in, out, tt.out)
}
}
}
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