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-rw-r--r--test/utf.go66
1 files changed, 66 insertions, 0 deletions
diff --git a/test/utf.go b/test/utf.go
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+++ b/test/utf.go
@@ -0,0 +1,66 @@
+// run
+
+// Copyright 2009 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.
+
+// Test UTF-8 in strings and character constants.
+
+package main
+
+import "unicode/utf8"
+
+func main() {
+ var chars [6]rune
+ chars[0] = 'a'
+ chars[1] = 'b'
+ chars[2] = 'c'
+ chars[3] = '\u65e5'
+ chars[4] = '\u672c'
+ chars[5] = '\u8a9e'
+ s := ""
+ for i := 0; i < 6; i++ {
+ s += string(chars[i])
+ }
+ var l = len(s)
+ for w, i, j := 0, 0, 0; i < l; i += w {
+ var r rune
+ r, w = utf8.DecodeRuneInString(s[i:len(s)])
+ if w == 0 {
+ panic("zero width in string")
+ }
+ if r != chars[j] {
+ panic("wrong value from string")
+ }
+ j++
+ }
+ // encoded as bytes: 'a' 'b' 'c' e6 97 a5 e6 9c ac e8 aa 9e
+ const L = 12
+ if L != l {
+ panic("wrong length constructing array")
+ }
+ a := make([]byte, L)
+ a[0] = 'a'
+ a[1] = 'b'
+ a[2] = 'c'
+ a[3] = 0xe6
+ a[4] = 0x97
+ a[5] = 0xa5
+ a[6] = 0xe6
+ a[7] = 0x9c
+ a[8] = 0xac
+ a[9] = 0xe8
+ a[10] = 0xaa
+ a[11] = 0x9e
+ for w, i, j := 0, 0, 0; i < L; i += w {
+ var r rune
+ r, w = utf8.DecodeRune(a[i:L])
+ if w == 0 {
+ panic("zero width in bytes")
+ }
+ if r != chars[j] {
+ panic("wrong value from bytes")
+ }
+ j++
+ }
+}