// Copyright (c) 2026 Storm Dragon
// Authors: Storm Dragon, Angus Kola
// SPDX-License-Identifier: GPL-3.0-or-later

package xorg

import (
	"context"
	"os"
	"os/exec"
	"strings"
	"testing"
	"time"
)

func TestNativeClipboardOwnerChange(t *testing.T) {
	if os.Getenv("CTHULHU_NATIVE_X11") != "1" {
		t.Skip("requires isolated X11 display")
	}
	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
	defer cancel()
	monitor := NewClipboardMonitor()
	if err := monitor.Start(ctx); err != nil {
		t.Fatal(err)
	}
	defer func() {
		if err := monitor.Stop(context.Background()); err != nil {
			t.Error(err)
		}
	}()
	command := exec.CommandContext(ctx, "xclip", "-selection", "clipboard", "-i")
	command.Stdin = strings.NewReader("same text")
	if err := command.Run(); err != nil {
		t.Fatal(err)
	}
	select {
	case <-monitor.Changes():
	case <-ctx.Done():
		t.Fatal("clipboard owner change was not observed")
	}
}