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842b05832f
This change makes sure that tests are run with the correct version of the go tool. The correct version is the one that we invoked with "go test", not the one that is first in our path. Fixes #16577 Change-Id: If22c8f8c3ec9e7c35d094362873819f2fbb8559b Reviewed-on: https://go-review.googlesource.com/28089 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
115 lines
2.6 KiB
Go
115 lines
2.6 KiB
Go
// Copyright 2015 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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package gc
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import (
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"bytes"
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"internal/testenv"
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"io/ioutil"
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"log"
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"os"
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"os/exec"
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"path/filepath"
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"strings"
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"testing"
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)
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// Make sure "hello world" does not link in all the
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// fmt.scanf routines. See issue 6853.
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func TestScanfRemoval(t *testing.T) {
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testenv.MustHaveGoBuild(t)
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// Make a directory to work in.
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dir, err := ioutil.TempDir("", "issue6853a-")
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if err != nil {
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log.Fatalf("could not create directory: %v", err)
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}
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defer os.RemoveAll(dir)
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// Create source.
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src := filepath.Join(dir, "test.go")
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f, err := os.Create(src)
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if err != nil {
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log.Fatalf("could not create source file: %v", err)
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}
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f.Write([]byte(`
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package main
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import "fmt"
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func main() {
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fmt.Println("hello world")
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}
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`))
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f.Close()
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// Name of destination.
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dst := filepath.Join(dir, "test")
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// Compile source.
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cmd := exec.Command(testenv.GoToolPath(t), "build", "-o", dst, src)
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out, err := cmd.CombinedOutput()
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if err != nil {
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log.Fatalf("could not build target: %v", err)
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}
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// Check destination to see if scanf code was included.
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cmd = exec.Command(testenv.GoToolPath(t), "tool", "nm", dst)
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out, err = cmd.CombinedOutput()
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if err != nil {
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log.Fatalf("could not read target: %v", err)
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}
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if bytes.Contains(out, []byte("scanInt")) {
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log.Fatalf("scanf code not removed from helloworld")
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}
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}
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// Make sure -S prints assembly code. See issue 14515.
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func TestDashS(t *testing.T) {
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testenv.MustHaveGoBuild(t)
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// Make a directory to work in.
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dir, err := ioutil.TempDir("", "issue14515-")
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if err != nil {
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log.Fatalf("could not create directory: %v", err)
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}
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defer os.RemoveAll(dir)
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// Create source.
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src := filepath.Join(dir, "test.go")
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f, err := os.Create(src)
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if err != nil {
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log.Fatalf("could not create source file: %v", err)
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}
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f.Write([]byte(`
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package main
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import "fmt"
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func main() {
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fmt.Println("hello world")
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}
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`))
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f.Close()
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// Compile source.
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cmd := exec.Command(testenv.GoToolPath(t), "build", "-gcflags", "-S", "-o", filepath.Join(dir, "test"), src)
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out, err := cmd.CombinedOutput()
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if err != nil {
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log.Fatalf("could not build target: %v", err)
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}
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patterns := []string{
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// It is hard to look for actual instructions in an
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// arch-independent way. So we'll just look for
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// pseudo-ops that are arch-independent.
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"\tTEXT\t",
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"\tFUNCDATA\t",
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"\tPCDATA\t",
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}
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outstr := string(out)
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for _, p := range patterns {
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if !strings.Contains(outstr, p) {
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println(outstr)
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panic("can't find pattern " + p)
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}
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}
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}
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