File size: 2,245 Bytes
e36aeda | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 | // Copyright 2020 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.
//go:build unix
package os_test
import (
"errors"
"internal/testenv"
"math"
. "os"
"runtime"
"syscall"
"testing"
)
func TestErrProcessDone(t *testing.T) {
testenv.MustHaveGoBuild(t)
t.Parallel()
p, err := StartProcess(testenv.GoToolPath(t), []string{"go"}, &ProcAttr{})
if err != nil {
t.Fatalf("starting test process: %v", err)
}
p.Wait()
if got := p.Signal(Kill); got != ErrProcessDone {
t.Errorf("got %v want %v", got, ErrProcessDone)
}
}
// Lookup of a process that does not exist at time of lookup.
func TestProcessAlreadyDone(t *testing.T) {
// Theoretically MaxInt32 is a valid PID, but the chance of it actually
// being used is extremely unlikely.
pid := math.MaxInt32
if runtime.GOOS == "solaris" || runtime.GOOS == "illumos" {
// Solaris/Illumos have a lower limit, above which wait returns
// EINVAL (see waitid in usr/src/uts/common/os/exit.c in
// illumos). This is configurable via sysconf(_SC_MAXPID), but
// we'll just take the default.
pid = 30000 - 1
}
p, err := FindProcess(pid)
if err != nil {
t.Fatalf("FindProcess(math.MaxInt32) got err %v, want nil", err)
}
if ps, err := p.Wait(); !errors.Is(err, syscall.ECHILD) {
t.Errorf("Wait() got err %v (ps %+v), want %v", err, ps, syscall.ECHILD)
}
if err := p.Release(); err != nil {
t.Errorf("Release() got err %v, want nil", err)
}
}
func TestUNIXProcessAlive(t *testing.T) {
testenv.MustHaveGoBuild(t)
t.Parallel()
p, err := StartProcess(testenv.GoToolPath(t), []string{"sleep", "1"}, &ProcAttr{})
if err != nil {
t.Skipf("starting test process: %v", err)
}
defer p.Kill()
proc, err := FindProcess(p.Pid)
if err != nil {
t.Errorf("OS reported error for running process: %v", err)
}
err = proc.Signal(syscall.Signal(0))
if err != nil {
t.Errorf("OS reported error for running process: %v", err)
}
}
func TestProcessBadPID(t *testing.T) {
p, err := FindProcess(-1)
if err != nil {
t.Fatalf("unexpected FindProcess error: %v", err)
}
err = p.Signal(syscall.Signal(0))
if err == nil {
t.Error("p.Signal succeeded unexpectedly")
}
}
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