Badcow / DNS

        $this->assertEquals('42 foo.example.com.', $kx->toText());

    }

    public function testOutputThrowsExceptionWhenMissingPreference(): void

    {

        $kx = new KX();

        $kx->setExchanger('mail.google.com.');

        $this->expectException(\InvalidArgumentException::class);

        $this->expectExceptionMessage('No preference has been set on KX object.');

        $kx->toText();

    }

    public function testOutputThrowsExceptionWhenMissingExchanger(): void

    {

        $kx->toText();

    }

    public function testOutputThrowsExceptionWhenMissingExchanger(): void

    {

        $kx = new KX();

        $kx->setPreference(15);

        $this->expectException(\InvalidArgumentException::class);

        $this->expectExceptionMessage('No exchanger has been set on KX object.');

        $kx->toText();

    }

    public function testFactory(): void

    {