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package namespace
import (
"os"
"path/filepath"
"strconv"
"testing"
)
func TestLifecycleReferenceCounting(t *testing.T) {
// Use a temporary directory to avoid polluting the system
tmpDir := t.TempDir()
profile := "test-vpn"
t.Run("RegisterAndUnregister", func(t *testing.T) {
err := RegisterProcess(tmpDir, profile)
if err != nil {
t.Fatalf("failed to register: %v", err)
}
pidsDir := GetPidsDirPath(tmpDir, profile)
pidFile := filepath.Join(pidsDir, strconv.Itoa(os.Getpid()))
if _, err := os.Stat(pidFile); os.IsNotExist(err) {
t.Errorf("PID file should exist at %s", pidFile)
}
err = UnregisterProcess(tmpDir, profile)
if err != nil {
t.Fatalf("failed to unregister: %v", err)
}
if _, err := os.Stat(pidFile); err == nil {
t.Errorf("PID file should have been removed at %s", pidFile)
}
})
t.Run("PruneStalePids", func(t *testing.T) {
pidsDir := GetPidsDirPath(tmpDir, profile)
if err := os.MkdirAll(pidsDir, 0755); err != nil {
t.Fatal(err)
}
fakePid := "9999999"
fakePidFile := filepath.Join(pidsDir, fakePid)
if err := os.WriteFile(fakePidFile, []byte(""), 0644); err != nil {
t.Fatal(err)
}
RegisterProcess(tmpDir, profile)
err := PruneStalePids(tmpDir, profile)
if err != nil {
t.Fatalf("prune failed: %v", err)
}
if _, err := os.Stat(fakePidFile); err == nil {
t.Errorf("Stale PID file %s should have been pruned", fakePidFile)
}
currentPidFile := filepath.Join(pidsDir, strconv.Itoa(os.Getpid()))
if _, err := os.Stat(currentPidFile); os.IsNotExist(err) {
t.Errorf("Current PID file %s should not have been pruned", currentPidFile)
}
UnregisterProcess(tmpDir, profile)
})
t.Run("IsLastProcess", func(t *testing.T) {
pidsDir := GetPidsDirPath(tmpDir, profile)
os.RemoveAll(pidsDir) // Reset
isLast, err := IsLastProcess(tmpDir, profile)
if err != nil || !isLast {
t.Errorf("Expected IsLastProcess to be true for empty profile, got %v, err: %v", isLast, err)
}
RegisterProcess(tmpDir, profile)
isLast, err = IsLastProcess(tmpDir, profile)
if err != nil || !isLast {
t.Errorf("Expected IsLastProcess to be true for single process, got %v, err: %v", isLast, err)
}
os.WriteFile(filepath.Join(pidsDir, "1234567"), []byte(""), 0644)
isLast, err = IsLastProcess(tmpDir, profile)
if err != nil || !isLast {
t.Errorf("Expected IsLastProcess to be true because 1234567 is dead, got %v, err: %v", isLast, err)
}
})
}
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