getch/tests/Ungetch/UngetchTest.php

<?php

namespace Olive\Tests\Console\Ungetch;

use PHPUnit\Framework\TestCase;
use Olive\Console\Getch;

class UngetchTest extends TestCase
{
    public function setUp(): void
    {
        parent::setUp(); // TODO: Change the autogenerated stub
    }

    public function testUngetch()
    {
        $g = new Getch();
        $res = $g->ungetch('A');
        self::assertSame(65, $res);
        $res = $g->getch();
        self::assertSame(65, $res);
        $res = ungetch(65);
        self::assertSame(65, $res);
        $res = $g->getch();
        self::assertSame(65, $res);
    }

    public function testTypeError()
    {
        $g = new Getch();
        $this->expectException(\TypeError::class);
        $g->ungetch(new \stdClass());
    }

    public function testForFun()
    {
        foreach (\str_split(\strrev('Hello World!')) as $char) {
            ungetch($char);
        }
        $result = '';
        do {
            $ord = getch();
            $result .= \chr($ord);
        } while ($ord !== ord('!'));
        self::assertSame('Hello World!', $result);
    }
}