<?php

namespace Badcow\DNS\Tests\Rdata;

use Badcow\DNS\Rdata\MX;
use PHPUnit\Framework\TestCase;

class MxTest extends TestCase
{
	public function testSetters(): void
	{
		$target = 'foo.example.com.';
		$preference = 10;
		$mx = new MX();
		$mx->setExchange($target);
		$mx->setPreference($preference);

		$this->assertEquals($target, $mx->getExchange());
		$this->assertEquals($preference, $mx->getPreference());
	}


	public function testOutput(): void
	{
		$target = 'foo.example.com.';
		$mx = new MX();
		$mx->SetExchange($target);
		$mx->setPreference(42);

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


	public function testOutputThrowsExceptionWhenMissingPreference(): void
	{
		$mx = new MX();
		$mx->setExchange('mail.google.com.');

		$this->expectException(\InvalidArgumentException::class);
		$this->expectExceptionMessage('No preference has been set on MX object.');
		$mx->toText();
	}


	public function testOutputThrowsExceptionWhenMissingExchange(): void
	{
		$mx = new MX();
		$mx->setPreference(15);

		$this->expectException(\InvalidArgumentException::class);
		$this->expectExceptionMessage('No exchange has been set on MX object.');
		$mx->toText();
	}


	public function testFromText(): void
	{
		$text = '10 mail.example.com.';
		/** @var MX $mx */
		$mx = MX::fromText($text);

		$this->assertEquals(10, $mx->getPreference());
		$this->assertEquals('mail.example.com.', $mx->getExchange());
	}


	public function testWire(): void
	{
		$mx = new MX();
		$mx->setExchange('mail.example.com.');
		$mx->setPreference(10);

		$expectation = pack('n', 10).chr(4).'mail'.chr(7).'example'.chr(3).'com'.chr(0);

		$this->assertEquals($expectation, $mx->toWire());
		$this->assertEquals($mx, MX::fromWire($expectation));
	}
}
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