package operationlock_test

import (
	"context"
	"testing"
	"time"

	"proxyctl/internal/operationlock"
)

func TestLockSerializesIndependentInstancesAndHonorsContext(t *testing.T) {
	path := t.TempDir() + "/proxyctl.lock"
	first := operationlock.New(path)
	second := operationlock.New(path)
	unlock, err := first.Lock(context.Background())
	if err != nil {
		t.Fatal(err)
	}
	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Millisecond)
	defer cancel()
	if _, err := second.Lock(ctx); err == nil {
		t.Fatal("second lock acquired while first held")
	}
	unlock()
	unlockSecond, err := second.Lock(context.Background())
	if err != nil {
		t.Fatal(err)
	}
	unlockSecond()
}