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-rw-r--r--test/stringrange.go71
1 files changed, 71 insertions, 0 deletions
diff --git a/test/stringrange.go b/test/stringrange.go
new file mode 100644
index 0000000..99e5edb
--- /dev/null
+++ b/test/stringrange.go
@@ -0,0 +1,71 @@
+// 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 range over strings.
+
+package main
+
+import (
+ "fmt"
+ "os"
+ "unicode/utf8"
+)
+
+func main() {
+ s := "\000\123\x00\xca\xFE\u0123\ubabe\U0000babe\U0010FFFFx"
+ expect := []rune{0, 0123, 0, 0xFFFD, 0xFFFD, 0x123, 0xbabe, 0xbabe, 0x10FFFF, 'x'}
+ offset := 0
+ var i int
+ var c rune
+ ok := true
+ cnum := 0
+ for i, c = range s {
+ r, size := utf8.DecodeRuneInString(s[i:len(s)]) // check it another way
+ if i != offset {
+ fmt.Printf("unexpected offset %d not %d\n", i, offset)
+ ok = false
+ }
+ if r != expect[cnum] {
+ fmt.Printf("unexpected rune %d from DecodeRuneInString: %x not %x\n", i, r, expect[cnum])
+ ok = false
+ }
+ if c != expect[cnum] {
+ fmt.Printf("unexpected rune %d from range: %x not %x\n", i, r, expect[cnum])
+ ok = false
+ }
+ offset += size
+ cnum++
+ }
+ if i != len(s)-1 {
+ fmt.Println("after loop i is", i, "not", len(s)-1)
+ ok = false
+ }
+
+ i = 12345
+ c = 23456
+ for i, c = range "" {
+ }
+ if i != 12345 {
+ fmt.Println("range empty string assigned to index:", i)
+ ok = false
+ }
+ if c != 23456 {
+ fmt.Println("range empty string assigned to value:", c)
+ ok = false
+ }
+
+ for _, c := range "a\xed\xa0\x80a" {
+ if c != 'a' && c != utf8.RuneError {
+ fmt.Printf("surrogate UTF-8 does not error: %U\n", c)
+ ok = false
+ }
+ }
+
+ if !ok {
+ fmt.Println("BUG: stringrange")
+ os.Exit(1)
+ }
+}