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// Copyright 2014 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 x86asm
import (
"encoding/hex"
"io/ioutil"
"strconv"
"strings"
"testing"
)
func TestDecode(t *testing.T) {
data, err := ioutil.ReadFile("testdata/decode.txt")
if err != nil {
t.Fatal(err)
}
all := string(data)
for strings.Contains(all, "\t\t") {
all = strings.Replace(all, "\t\t", "\t", -1)
}
for _, line := range strings.Split(all, "\n") {
line = strings.TrimSpace(line)
if line == "" || strings.HasPrefix(line, "#") {
continue
}
f := strings.SplitN(line, "\t", 4)
i := strings.Index(f[0], "|")
if i < 0 {
t.Errorf("parsing %q: missing | separator", f[0])
continue
}
if i%2 != 0 {
t.Errorf("parsing %q: misaligned | separator", f[0])
}
size := i / 2
code, err := hex.DecodeString(f[0][:i] + f[0][i+1:])
if err != nil {
t.Errorf("parsing %q: %v", f[0], err)
continue
}
mode, err := strconv.Atoi(f[1])
if err != nil {
t.Errorf("invalid mode %q in: %s", f[1], line)
continue
}
syntax, asm := f[2], f[3]
inst, err := Decode(code, mode)
var out string
if err != nil {
out = "error: " + err.Error()
} else {
switch syntax {
case "gnu":
out = GNUSyntax(inst)
case "intel":
out = IntelSyntax(inst)
case "plan9":
out = Plan9Syntax(inst, 0, nil)
default:
t.Errorf("unknown syntax %q", syntax)
continue
}
}
if out != asm || inst.Len != size {
t.Errorf("Decode(%s) [%s] = %s, %d, want %s, %d", f[0], syntax, out, inst.Len, asm, size)
}
}
}
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