<?php

namespace Badcow\DNS\Tests\Rdata;

use Badcow\DNS\Rdata\Factory;
use Badcow\DNS\Rdata\SSHFP;
use PHPUnit\Framework\TestCase;

class SshfpTest extends TestCase
{
	public function dataProvider_testExceptions(): array
	{
		return [
		    //[Algorithm, FPType, Fingerprint, ExpectedException, ExpectedExceptionMessage]
		    [-1, 255, '123456789abcdef67890123456789abcdef67890', \InvalidArgumentException::class, 'Algorithm must be an 8-bit integer between 0 and 255.'],
		    [256, 255, '123456789abcdef67890123456789abcdef67890', \InvalidArgumentException::class, 'Algorithm must be an 8-bit integer between 0 and 255.'],
		    [0, -1, '123456789abcdef67890123456789abcdef67890', \InvalidArgumentException::class, 'Fingerprint type must be an 8-bit integer between 0 and 255.'],
		    [0, 256, '123456789abcdef67890123456789abcdef67890', \InvalidArgumentException::class, 'Fingerprint type must be an 8-bit integer between 0 and 255.'],
		    [1, 1, '0x123456789abcdef67890023456789abcdef67890', \InvalidArgumentException::class, 'The fingerprint MUST be a hexadecimal value.'],
		];
	}


	public function testOutput(): void
	{
		$sshfp = new SSHFP();
		$sshfp->setAlgorithm(SSHFP::ALGORITHM_DSA);
		$sshfp->setFingerprintType(SSHFP::FP_TYPE_SHA1);
		$sshfp->setFingerprint('123456789abcdef67890123456789abcdef67890');

		$expectation = '2 1 123456789abcdef67890123456789abcdef67890';
		$this->assertEquals($expectation, $sshfp->toText());
	}


	/**
	 * @dataProvider dataProvider_testExceptions
	 *
	 * @param int    $algorithm
	 * @param int    $fpType
	 * @param string $fingerprint
	 * @param string $expectedException
	 * @param string $expectedExceptionMessage
	 */
	public function testExceptions(
		int $algorithm,
		int $fpType,
		string $fingerprint,
		string $expectedException,
		string $expectedExceptionMessage,
	): void {
		$this->expectException($expectedException);
		$this->expectExceptionMessage($expectedExceptionMessage);

		Factory::SSHFP($algorithm, $fpType, $fingerprint);
	}


	public function testGetType(): void
	{
		$sshfp = new SSHFP();
		$this->assertEquals('SSHFP', $sshfp->getType());
	}


	public function testGetTypeCode(): void
	{
		$sshfp = new SSHFP();
		$this->assertEquals(44, $sshfp->getTypeCode());
	}


	public function testToText(): void
	{
		$expectation = '2 1 123456789abcdef67890123456789abcdef67890';
		$sshfp = new SSHFP();
		$sshfp->setAlgorithm(2);
		$sshfp->setFingerprintType(1);
		$sshfp->setFingerprint('123456789abcdef67890123456789abcdef67890');

		$this->assertEquals($expectation, $sshfp->toText());
	}


	public function testWire(): void
	{
		$wireFormat = chr(2).chr(1).hex2bin('123456789abcdef67890123456789abcdef67890');
		$sshfp = new SSHFP();
		$sshfp->setAlgorithm(2);
		$sshfp->setFingerprintType(1);
		$sshfp->setFingerprint('123456789abcdef67890123456789abcdef67890');

		$this->assertEquals($wireFormat, $sshfp->toWire());

		$wireFormat = 'zyxwvut'.$wireFormat;
		$offset = 7;
		$this->assertEquals($sshfp, SSHFP::fromWire($wireFormat, $offset, 40));
	}


	public function testFromText(): void
	{
		$expectation = new SSHFP();
		$expectation->setAlgorithm(2);
		$expectation->setFingerprintType(1);
		$expectation->setFingerprint('123456789abcdef67890123456789abcdef67890');

		$this->assertEquals($expectation, SSHFP::fromText('2 1 123456789abcdef67890123456789abcdef67890'));
	}


	public function testFactory(): void
	{
		$sshfp = Factory::SSHFP(2, 1, '123456789abcdef67890123456789abcdef67890');

		$this->assertEquals(2, $sshfp->getAlgorithm());
		$this->assertEquals(1, $sshfp->getFingerprintType());
		$this->assertEquals('123456789abcdef67890123456789abcdef67890', $sshfp->getFingerprint());
	}
}
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