package main

import (
	"slices"
	"testing"
)

func TestNewPlatformClipboardWriterUsesCommandWriterOnAndroid(t *testing.T) {
	t.Parallel()

	writer := newPlatformClipboardWriter("android", nil)
	if _, ok := writer.(*clipboardCommandWriter); !ok {
		t.Fatalf("newPlatformClipboardWriter(android) = %T, want *clipboardCommandWriter", writer)
	}
}

func TestNewPlatformClipboardWriterUsesSystemClipboardOffAndroid(t *testing.T) {
	t.Parallel()

	if writer := newPlatformClipboardWriter("linux", nil); writer != nil {
		t.Fatalf("newPlatformClipboardWriter(linux) = %T, want nil", writer)
	}
}

func TestClipboardCommandWriterDrainsQueuedWrites(t *testing.T) {
	t.Parallel()

	writer := &clipboardCommandWriter{}
	if err := writer.WriteText("username"); err != nil {
		t.Fatalf("WriteText(username) error = %v", err)
	}
	if err := writer.WriteText("password"); err != nil {
		t.Fatalf("WriteText(password) error = %v", err)
	}

	if got := writer.drain(); !slices.Equal(got, []string{"username", "password"}) {
		t.Fatalf("drain() = %v, want [username password]", got)
	}
	if got := writer.drain(); got != nil {
		t.Fatalf("drain() after flush = %v, want nil", got)
	}
}