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test/stringrange.go
71 строка
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jjpinto
test: clarify log message for surrogate UTF-8 check
29 дек 2025, 22:19
29 дек 2025, 22:19
f7b7e94
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// 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 produce an error: %U\n", c) ok = false } } if !ok { fmt.Println("BUG: stringrange") os.Exit(1) } }