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// Copyright (c) Tailscale Inc & contributors
// SPDX-License-Identifier: BSD-3-Clause
package pidowner
import (
"math/rand"
"os"
"os/user"
"testing"
)
func TestOwnerOfPID(t *testing.T) {
id, err := OwnerOfPID(os.Getpid())
if err == ErrNotImplemented {
t.Skip(err)
}
if err != nil {
t.Fatal(err)
}
t.Logf("id=%q", id)
u, err := user.LookupId(id)
if err != nil {
t.Fatalf("LookupId: %v", err)
}
t.Logf("Got: %+v", u)
}
// validate that OS implementation returns ErrProcessNotFound.
func TestNotFoundError(t *testing.T) {
// Try a bunch of times to stumble upon a pid that doesn't exist...
const tries = 50
for range tries {
_, err := OwnerOfPID(rand.Intn(1e9))
if err == ErrNotImplemented {
t.Skip(err)
}
if err == nil {
// We got unlucky and this pid existed. Try again.
continue
}
if err == ErrProcessNotFound {
// Pass.
return
}
t.Fatalf("Error is not ErrProcessNotFound: %T %v", err, err)
}
t.Errorf("after %d tries, couldn't find a process that didn't exist", tries)
}
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