114 lines
2.4 KiB
Go
114 lines
2.4 KiB
Go
// Copyright 2016 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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// +build openbsd
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// This, on the face of it, bizarre testing mechanism is necessary because
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// the only reliable way to gauge whether or not a pledge(2) call has succeeded
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// is that the program has been killed as a result of breaking its pledge.
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package unix_test
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import (
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"flag"
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"fmt"
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"io/ioutil"
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"os"
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"os/exec"
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"path/filepath"
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"testing"
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"golang.org/x/sys/unix"
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)
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type testProc struct {
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fn func() // should always exit instead of returning
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cleanup func() error // for instance, delete coredumps from testing pledge
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success bool // whether zero-exit means success or failure
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}
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var (
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testProcs = map[string]testProc{}
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procName = ""
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)
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const (
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optName = "sys-unix-internal-procname"
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)
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func init() {
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flag.StringVar(&procName, optName, "", "internal use only")
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}
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// testCmd generates a proper command that, when executed, runs the test
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// corresponding to the given key.
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func testCmd(procName string) (*exec.Cmd, error) {
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exe, err := filepath.Abs(os.Args[0])
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if err != nil {
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return nil, err
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}
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cmd := exec.Command(exe, "-"+optName+"="+procName)
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cmd.Stdout, cmd.Stderr = os.Stdout, os.Stderr
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return cmd, nil
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}
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// ExitsCorrectly is a comprehensive, one-line-of-use wrapper for testing
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// a testProc with a key.
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func ExitsCorrectly(procName string, t *testing.T) {
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s := testProcs[procName]
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c, err := testCmd(procName)
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defer func() {
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if s.cleanup() != nil {
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t.Fatalf("Failed to run cleanup for %s", procName)
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}
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}()
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if err != nil {
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t.Fatalf("Failed to construct command for %s", procName)
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}
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if (c.Run() == nil) != s.success {
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result := "succeed"
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if !s.success {
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result = "fail"
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}
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t.Fatalf("Process did not %s when it was supposed to", result)
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}
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}
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func TestMain(m *testing.M) {
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flag.Parse()
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if procName != "" {
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testProcs[procName].fn()
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}
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os.Exit(m.Run())
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}
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// For example, add a test for pledge.
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func init() {
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testProcs["pledge"] = testProc{
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func() {
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fmt.Println(unix.Pledge("", nil))
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os.Exit(0)
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},
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func() error {
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files, err := ioutil.ReadDir(".")
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if err != nil {
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return err
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}
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for _, file := range files {
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if filepath.Ext(file.Name()) == ".core" {
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if err := os.Remove(file.Name()); err != nil {
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return err
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}
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}
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}
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return nil
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},
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false,
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}
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}
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func TestPledge(t *testing.T) {
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ExitsCorrectly("pledge", t)
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}
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