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// Copyright 2011 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 work
import (
"bytes"
"cmd/internal/objabi"
"cmd/internal/sys"
"fmt"
"math/rand"
"testing"
"time"
"unicode/utf8"
)
func TestEncodeArgs(t *testing.T) {
t.Parallel()
tests := []struct {
arg, want string
}{
{"", ""},
{"hello", "hello"},
{"hello\n", "hello\\n"},
{"hello\\", "hello\\\\"},
{"hello\nthere", "hello\\nthere"},
{"\\\n", "\\\\\\n"},
}
for _, test := range tests {
if got := encodeArg(test.arg); got != test.want {
t.Errorf("encodeArg(%q) = %q, want %q", test.arg, got, test.want)
}
}
}
func TestEncodeDecode(t *testing.T) {
t.Parallel()
tests := []string{
"",
"hello",
"hello\\there",
"hello\nthere",
"hello 中国",
"hello \n中\\国",
}
for _, arg := range tests {
if got := objabi.DecodeArg(encodeArg(arg)); got != arg {
t.Errorf("objabi.DecodeArg(encodeArg(%q)) = %q", arg, got)
}
}
}
func TestEncodeDecodeFuzz(t *testing.T) {
if testing.Short() {
t.Skip("fuzz test is slow")
}
t.Parallel()
nRunes := sys.ExecArgLengthLimit + 100
rBuffer := make([]rune, nRunes)
buf := bytes.NewBuffer([]byte(string(rBuffer)))
seed := time.Now().UnixNano()
t.Logf("rand seed: %v", seed)
rng := rand.New(rand.NewSource(seed))
for i := 0; i < 50; i++ {
// Generate a random string of runes.
buf.Reset()
for buf.Len() < sys.ExecArgLengthLimit+1 {
var r rune
for {
r = rune(rng.Intn(utf8.MaxRune + 1))
if utf8.ValidRune(r) {
break
}
}
fmt.Fprintf(buf, "%c", r)
}
arg := buf.String()
if got := objabi.DecodeArg(encodeArg(arg)); got != arg {
t.Errorf("[%d] objabi.DecodeArg(encodeArg(%q)) = %q [seed: %v]", i, arg, got, seed)
}
}
}