IPTest.php
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	<?php
	declare(strict_types=1);

	namespace Keruald\OmniTools\Tests\Network;

	use Keruald\OmniTools\Network\IP;
	use PHPUnit\Framework\Attributes\DataProvider;
	use PHPUnit\Framework\TestCase;

	class IPTest extends TestCase {

	///
	/// Data providers for IP addresses
	///
	/// These data providers methods allow providing IP addresses
	/// to validate or invalidate.
	///
	/// The advanced IPv6 tests have been curated by Stephen Ryan
	/// Source: https://web.archive.org/web/20110515134717/http://forums.dartware.com/viewtopic.php?t=452
	///

	public static function provideValidIP () : iterable {
	yield ["0.0.0.0"];
	yield ["17.17.17.17"];
	yield ["fe80:0000:0000:0000:0204:61ff:fe9d:f156"];
	}

	public static function provideInvalidIP () : iterable {
	yield [""];
	yield ["1"];
	yield ["17.17"];
	yield ["17.17.17.256"];
	}

	public static function provideValidIPv4 () : iterable {
	return [["0.0.0.0"], ["17.17.17.17"]];
	}

	public static function provideInvalidIPv4 () : iterable {
	yield [""];
	yield ["1"];
	yield ["17.17"];
	yield ["17.17.17.256"];
	yield ["fe80:0000:0000:0000:0204:61ff:fe9d:f156"];
	}

	public static function provideValidIPv6 () : iterable {
	yield ["::1"];
	yield ["::ffff:192.0.2.128"];
	yield ["fe80:0000:0000:0000:0204:61ff:fe9d:f156"];

	yield ["::ffff:192.0.2.128", "IPv4 represented as dotted-quads"];
	}

	public static function provideInvalidIPv6 () : iterable {
	yield ["0.0.0.0"];
	yield [""];
	yield ["1"];
	yield ["17.17"];
	yield ["17.17.17.17"];
	yield ["::fg", "Valid IPv6 digits are 0-f, ie 0-9 and a-f"];

	yield ["02001:0000:1234:0000:0000:C1C0:ABCD:0876", "Extra 0"];
	yield ["2001:0000:1234:0000:00001:C1C0:ABCD:0876", "Extra 0"];
	yield ["1.2.3.4:1111:2222:3333:4444::5555"];
	}

	public static function provideValidLoopbackIP () : iterable {
	yield ["127.0.0.1"];
	yield ["127.0.0.3"];
	yield ["::1"];
	}

	public static function provideInvalidLoopbackIP () : iterable {
	yield ["0.0.0.0"];
	yield ["1.2.3.4"];
	yield ["192.168.1.1"];
	yield ["::2"];
	}

	///
	/// Test cases
	///

	#[DataProvider("provideValidIP")]
	public function testIsIP ($ip) {
	$this->assertTrue(IP::isIP($ip));
	}

	#[DataProvider("provideInvalidIP")]
	public function testIsIPWhenItIsNot ($ip) {
	$this->assertFalse(IP::isIP($ip));
	}

	#[DataProvider("provideValidIPv4")]
	public function testIsIPv4 ($ip) {
	$this->assertTrue(IP::isIPv4($ip));
	}

	#[DataProvider("provideInvalidIPv4")]
	public function testIsIPv4WhenItIsNot ($ip) {
	$this->assertFalse(IP::isIPv4($ip));
	}

	#[DataProvider("provideValidIPv6")]
	public function testIsIPv6 (string $ip, string $message = "") {
	$this->assertTrue(IP::isIPv6($ip), $message);
	}

	#[DataProvider("provideInvalidIPv6")]
	public function testIsIPv6WhenItIsNot (string $ip, string $message = "") : void {
	$this->assertFalse(IP::isIPv6($ip), $message);
	}

	#[DataProvider("provideValidLoopbackIP")]
	public function testIsLoopback (string $ip) : void {
	$this->assertTrue(IP::isLoopback($ip));
	}

	#[DataProvider("provideInvalidLoopbackIP")]
	public function testIsLoopbackWhenItIsNot (string $ip) : void {
	$this->assertFalse(IP::isLoopback($ip));
	}

	}

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