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151 lines
3.6 KiB
151 lines
3.6 KiB
// run
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// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test string literal syntax.
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package main
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import "os"
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var ecode int
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func assert(a, b, c string) {
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if a != b {
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ecode = 1
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print("FAIL: ", c, ": ", a, "!=", b, "\n")
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var max int = len(a)
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if len(b) > max {
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max = len(b)
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}
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for i := 0; i < max; i++ {
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ac := 0
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bc := 0
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if i < len(a) {
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ac = int(a[i])
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}
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if i < len(b) {
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bc = int(b[i])
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}
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if ac != bc {
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print("\ta[", i, "] = ", ac, "; b[", i, "] =", bc, "\n")
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}
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}
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panic("string_lit")
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}
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}
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const (
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gx1 = "aä本☺"
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gx2 = "aä\xFF\xFF本☺"
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gx2fix = "aä\uFFFD\uFFFD本☺"
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)
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var (
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gr1 = []rune(gx1)
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gr2 = []rune(gx2)
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gb1 = []byte(gx1)
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gb2 = []byte(gx2)
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)
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func main() {
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ecode = 0
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s :=
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"" +
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" " +
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"'`" +
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"a" +
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"ä" +
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"本" +
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"\a\b\f\n\r\t\v\\\"" +
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"\000\123\x00\xca\xFE\u0123\ubabe\U0000babe" +
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`` +
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` ` +
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`'"` +
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`a` +
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`ä` +
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`本` +
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`\a\b\f\n\r\t\v\\\'` +
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`\000\123\x00\xca\xFE\u0123\ubabe\U0000babe` +
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`\x\u\U\`
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assert("", ``, "empty")
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assert(" ", " ", "blank")
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assert("\x61", "a", "lowercase a")
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assert("\x61", `a`, "lowercase a (backquote)")
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assert("\u00e4", "ä", "a umlaut")
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assert("\u00e4", `ä`, "a umlaut (backquote)")
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assert("\u672c", "本", "nihon")
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assert("\u672c", `本`, "nihon (backquote)")
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assert("\x07\x08\x0c\x0a\x0d\x09\x0b\x5c\x22",
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"\a\b\f\n\r\t\v\\\"",
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"backslashes")
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assert("\\a\\b\\f\\n\\r\\t\\v\\\\\\\"",
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`\a\b\f\n\r\t\v\\\"`,
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"backslashes (backquote)")
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assert("\x00\x53\000\xca\376S몾몾",
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"\000\123\x00\312\xFE\u0053\ubabe\U0000babe",
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"backslashes 2")
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assert("\\000\\123\\x00\\312\\xFE\\u0123\\ubabe\\U0000babe",
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`\000\123\x00\312\xFE\u0123\ubabe\U0000babe`,
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"backslashes 2 (backquote)")
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assert("\\x\\u\\U\\", `\x\u\U\`, "backslash 3 (backquote)")
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// test large and surrogate-half runes. perhaps not the most logical place for these tests.
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var r int32
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r = 0x10ffff // largest rune value
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s = string(r)
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assert(s, "\xf4\x8f\xbf\xbf", "largest rune")
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r = 0x10ffff + 1
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s = string(r)
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assert(s, "\xef\xbf\xbd", "too-large rune")
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r = 0xD800
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s = string(r)
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assert(s, "\xef\xbf\xbd", "surrogate rune min")
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r = 0xDFFF
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s = string(r)
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assert(s, "\xef\xbf\xbd", "surrogate rune max")
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r = -1
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s = string(r)
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assert(s, "\xef\xbf\xbd", "negative rune")
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// the large rune tests again, this time using constants instead of a variable.
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// these conversions will be done at compile time.
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s = string(0x10ffff) // largest rune value
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assert(s, "\xf4\x8f\xbf\xbf", "largest rune constant")
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s = string(0x10ffff + 1)
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assert(s, "\xef\xbf\xbd", "too-large rune constant")
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s = string(0xD800)
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assert(s, "\xef\xbf\xbd", "surrogate rune min constant")
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s = string(0xDFFF)
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assert(s, "\xef\xbf\xbd", "surrogate rune max constant")
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s = string(-1)
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assert(s, "\xef\xbf\xbd", "negative rune")
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// the large rune tests yet again, with a slice.
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rs := []rune{0x10ffff, 0x10ffff + 1, 0xD800, 0xDFFF, -1}
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s = string(rs)
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assert(s, "\xf4\x8f\xbf\xbf\xef\xbf\xbd\xef\xbf\xbd\xef\xbf\xbd\xef\xbf\xbd", "large rune slice")
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assert(string(gr1), gx1, "global ->[]rune")
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assert(string(gr2), gx2fix, "global invalid ->[]rune")
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assert(string(gb1), gx1, "->[]byte")
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assert(string(gb2), gx2, "global invalid ->[]byte")
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var (
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r1 = []rune(gx1)
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r2 = []rune(gx2)
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b1 = []byte(gx1)
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b2 = []byte(gx2)
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)
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assert(string(r1), gx1, "->[]rune")
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assert(string(r2), gx2fix, "invalid ->[]rune")
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assert(string(b1), gx1, "->[]byte")
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assert(string(b2), gx2, "invalid ->[]byte")
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os.Exit(ecode)
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}
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