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// Copyright 2015 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 asm
import (
"bytes"
"fmt"
"io/ioutil"
"log"
"os"
"path/filepath"
"strings"
"testing"
"cmd/asm/internal/lex"
"cmd/internal/obj"
)
// An end-to-end test for the assembler: Do we print what we parse?
// Output is generated by, in effect, turning on -S and comparing the
// result against a golden file.
func testEndToEnd(t *testing.T, goarch string) {
lex.InitHist()
input := filepath.Join("testdata", goarch+".s")
output := filepath.Join("testdata", goarch+".out")
architecture, ctxt := setArch(goarch)
lexer := lex.NewLexer(input, ctxt)
parser := NewParser(ctxt, architecture, lexer)
pList := obj.Linknewplist(ctxt)
var ok bool
testOut = new(bytes.Buffer) // The assembler writes -S output to this buffer.
ctxt.Bso = obj.Binitw(os.Stdout)
defer obj.Bflush(ctxt.Bso)
ctxt.Diag = log.Fatalf
obj.Binitw(ioutil.Discard)
pList.Firstpc, ok = parser.Parse()
if !ok {
t.Fatalf("asm: ppc64 assembly failed")
}
result := string(testOut.Bytes())
expect, err := ioutil.ReadFile(output)
// For Windows.
result = strings.Replace(result, `testdata\`, `testdata/`, -1)
if err != nil {
t.Fatal(err)
}
if result != string(expect) {
if false { // Enable to capture output.
fmt.Printf("%s", result)
os.Exit(1)
}
t.Errorf("%s failed: output differs", goarch)
r := strings.Split(result, "\n")
e := strings.Split(string(expect), "\n")
if len(r) != len(e) {
t.Errorf("%s: expected %d lines, got %d", len(e), len(r))
}
n := len(e)
if n > len(r) {
n = len(r)
}
for i := 0; i < n; i++ {
if r[i] != e[i] {
t.Errorf("%s:%d:\nexpected\n\t%s\ngot\n\t%s", output, i, e[i], r[i])
}
}
}
}
func TestPPC64EndToEnd(t *testing.T) {
testEndToEnd(t, "ppc64")
}
func TestARMEndToEnd(t *testing.T) {
testEndToEnd(t, "arm")
}
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