wip: test signal

daemon/process_unix_test.go

@@ -0,0 +1,58 @@
+package daemon
+
+import (
+	"os"
+	"os/exec"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"golang.org/x/sys/unix"
+)
+
+func TestWait(t *testing.T) {
+	var (
+		err     error
+		pid     int
+		testpid int
+		ws      unix.WaitStatus
+	)
+
+	cmd := exec.Command("sleep", "10")
+	if err = cmd.Start(); err != nil {
+		t.Fatal("failed to start command:", err)
+	}
+
+	pid = cmd.Process.Pid
+	t.Log("started pid:", pid)
+	go func() {
+		time.Sleep(1200 * time.Millisecond)
+		p, terr := os.FindProcess(pid)
+		if terr == nil {
+			if terr = p.Signal(unix.SIGTERM); terr != nil {
+				t.Log("sending signal failed:", terr)
+			}
+		} else {
+			t.Logf("find process %d: %v", pid, terr)
+		}
+	}()
+
+	testpid, err = unix.Wait4(-1, &ws, 0, nil)
+	if err != nil {
+		t.Fatal("wait4 error:", err)
+	}
+
+	if ws.Signaled() {
+		t.Log("the child process got signal:", ws.Signal())
+	}
+
+	if ws.Exited() {
+		t.Log("the child process exit with status:", ws.ExitStatus())
+	}
+
+	// if err = cmd.Wait(); err != nil {
+	// 	t.Fatal("is this expected?", err)
+	// }
+
+	assert.Equal(t, pid, testpid)
+}