MediaWikiTitleCodecTest.php
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MediaWikiTitleCodecTest.php
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	<?php
	/**
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License along
	* with this program; if not, write to the Free Software Foundation, Inc.,
	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
	* http://www.gnu.org/copyleft/gpl.html
	*
	* @file
	* @author Daniel Kinzler
	*/

	use MediaWiki\Cache\GenderCache;
	use MediaWiki\Interwiki\InterwikiLookup;
	use MediaWiki\MainConfigNames;
	use MediaWiki\Page\PageIdentity;
	use MediaWiki\Page\PageIdentityValue;
	use MediaWiki\Tests\Unit\DummyServicesTrait;
	use MediaWiki\Title\MalformedTitleException;
	use MediaWiki\Title\MediaWikiTitleCodec;
	use MediaWiki\Title\NamespaceInfo;
	use MediaWiki\Title\Title;
	use MediaWiki\Title\TitleValue;

	/**
	* @covers \MediaWiki\Title\MediaWikiTitleCodec
	*
	* @group Title
	* @group Database
	* ^--- needed because of global state in
	*/
	class MediaWikiTitleCodecTest extends MediaWikiIntegrationTestCase {
	use DummyServicesTrait;

	protected function setUp(): void {
	parent::setUp();

	$this->overrideConfigValues( [
	MainConfigNames::AllowUserJs => false,
	MainConfigNames::DefaultLanguageVariant => false,
	MainConfigNames::MetaNamespace => 'Project',
	MainConfigNames::LocalInterwikis => [ 'localtestiw' ],
	MainConfigNames::CapitalLinks => true,
	MainConfigNames::LanguageCode => 'en',
	] );
	$this->setUserLang( 'en' );
	}

	/**
	* Returns a mock GenderCache that will consider a user "female" if the
	* first part of the user name ends with "a".
	*
	* @return GenderCache
	*/
	private function getGenderCache() {
	$genderCache = $this->createMock( GenderCache::class );

	$genderCache->method( 'getGenderOf' )
	->willReturnCallback( static function ( $userName ) {
	return preg_match( '/^[^- _]+a( \|_\|$)/u', $userName ) ? 'female' : 'male';
	} );

	return $genderCache;
	}

	/**
	* Returns a InterwikiLookup where the only valid interwikis are 'localtestiw' and 'remotetestiw'.
	* Only `isValidInterwiki` should actually be needed.
	*
	* @return InterwikiLookup
	*/
	private function getInterwikiLookup(): InterwikiLookup {
	return $this->getDummyInterwikiLookup( [ 'localtestiw', 'remotetestiw' ] );
	}

	/**
	* Returns a NamespaceInfo where the only namespaces that exist are NS_SPECIAL, NS_MAIN, NS_TALK,
	* NS_USER, and NS_USER_TALK. As per the real NamespaceInfo, NS_USER and NS_USER_TALK have
	* gender distinctions. All namespaces are capitalized.
	*
	* @return NamespaceInfo
	*/
	private function getNamespaceInfo(): NamespaceInfo {
	return $this->getDummyNamespaceInfo( [
	MainConfigNames::CanonicalNamespaceNames => [
	NS_SPECIAL => 'Special',
	NS_MAIN => '',
	NS_TALK => 'Talk',
	NS_USER => 'User',
	NS_USER_TALK => 'User_talk',
	],
	MainConfigNames::CapitalLinks => true,
	] );
	}

	protected function makeCodec( $lang ) {
	return new MediaWikiTitleCodec(
	$this->getServiceContainer()->getLanguageFactory()->getLanguage( $lang ),
	$this->getGenderCache(),
	[ 'localtestiw' ],
	$this->getInterwikiLookup(),
	$this->getNamespaceInfo()
	);
	}

	public static function provideFormat() {
	return [
	[ NS_MAIN, 'Foo_Bar', '', '', 'en', 'Foo Bar' ],
	[ NS_USER, 'Hansi_Maier', 'stuff_and_so_on', '', 'en', 'User:Hansi Maier#stuff and so on' ],
	[ false, 'Hansi_Maier', '', '', 'en', 'Hansi Maier' ],
	[
	NS_USER_TALK,
	'hansi__maier',
	'',
	'',
	'en',
	'User talk:hansi maier',
	'User talk:Hansi maier'
	],

	// getGenderCache() provides a mock that considers first
	// names ending in "a" to be female.
	[ NS_USER, 'Lisa_Müller', '', '', 'de', 'Benutzerin:Lisa Müller' ],
	[ NS_MAIN, 'FooBar', '', 'remotetestiw', 'en', 'remotetestiw:FooBar' ],
	];
	}

	/**
	* @dataProvider provideFormat
	*/
	public function testFormat( $namespace, $text, $fragment, $interwiki, $lang, $expected,
	$normalized = null
	) {
	$normalized ??= $expected;

	$codec = $this->makeCodec( $lang );
	$actual = $codec->formatTitle( $namespace, $text, $fragment, $interwiki );

	$this->assertEquals( $expected, $actual, 'formatted' );

	// test round trip
	$parsed = $codec->parseTitle( $actual, NS_MAIN );
	$actual2 = $codec->formatTitle(
	$parsed->getNamespace(),
	$parsed->getText(),
	$parsed->getFragment(),
	$parsed->getInterwiki()
	);

	$this->assertEquals( $normalized, $actual2, 'normalized after round trip' );
	}

	public static function provideGetText() {
	// $title = new TitleValue( $namespace, $dbkey, $fragment );
	return [
	[ new TitleValue( NS_MAIN, 'Foo_Bar', '' ), 'en', 'Foo Bar' ],
	[ new TitleValue( NS_USER, 'Hansi_Maier', 'stuff_and_so_on' ), 'en', 'Hansi Maier' ],
	[ new PageIdentityValue( 37, NS_MAIN, 'Foo_Bar', PageIdentity::LOCAL ), 'en', 'Foo Bar' ],
	[ new PageIdentityValue( 37, NS_USER, 'Hansi_Maier', PageIdentity::LOCAL ), 'en', 'Hansi Maier' ],
	];
	}

	/**
	* @dataProvider provideGetText
	*/
	public function testGetText( $title, $lang, $expected ) {
	$codec = $this->makeCodec( $lang );
	$actual = $codec->getText( $title );

	$this->assertEquals( $expected, $actual );
	}

	public static function provideGetPrefixedText() {
	return [
	[ new TitleValue( NS_MAIN, 'Foo_Bar', '' ), 'en', 'Foo Bar' ],
	[ new TitleValue( NS_USER, 'Hansi_Maier', 'stuff_and_so_on' ), 'en', 'User:Hansi Maier' ],

	// No capitalization or normalization is applied while formatting!
	[ new TitleValue( NS_USER_TALK, 'hansi__maier', '' ), 'en', 'User talk:hansi maier' ],

	// getGenderCache() provides a mock that considers first
	// names ending in "a" to be female.
	[
	new TitleValue( NS_USER, 'Lisa_Müller', '' ),
	'de', 'Benutzerin:Lisa Müller'
	],
	[
	new TitleValue( 1000000, 'Invalid_namespace', '' ),
	'en',
	'Special:Badtitle/NS1000000:Invalid namespace'
	],
	[
	new PageIdentityValue( 37, NS_MAIN, 'Foo_Bar', PageIdentity::LOCAL ),
	'en',
	'Foo Bar'
	],
	[
	new PageIdentityValue( 37, NS_USER, 'Hansi_Maier', PageIdentity::LOCAL ),
	'en',
	'User:Hansi Maier'
	],
	[
	new PageIdentityValue( 37, NS_USER_TALK, 'hansi__maier', PageIdentity::LOCAL ),
	'en',
	'User talk:hansi maier'
	],
	[
	new PageIdentityValue( 37, NS_USER, 'Lisa_Müller', PageIdentity::LOCAL ),
	'de',
	'Benutzerin:Lisa Müller'
	],
	[
	new PageIdentityValue( 37, 1000000, 'Invalid_namespace', PageIdentity::LOCAL ),
	'en',
	'Special:Badtitle/NS1000000:Invalid namespace'
	],
	];
	}

	/**
	* @dataProvider provideGetPrefixedText
	*/
	public function testGetPrefixedText( $title, $lang, $expected ) {
	$codec = $this->makeCodec( $lang );
	$actual = $codec->getPrefixedText( $title );

	$this->assertEquals( $expected, $actual );
	}

	public static function provideGetPrefixedDBkey() {
	return [
	[ new TitleValue( NS_MAIN, 'Foo_Bar', '', '' ), 'en', 'Foo_Bar' ],
	[ new TitleValue( NS_USER, 'Hansi_Maier', 'stuff_and_so_on', '' ), 'en', 'User:Hansi_Maier' ],

	// No capitalization or normalization is applied while formatting!
	[ new TitleValue( NS_USER_TALK, 'hansi__maier', '', '' ), 'en', 'User_talk:hansi__maier' ],

	// getGenderCache() provides a mock that considers first
	// names ending in "a" to be female.
	[ new TitleValue( NS_USER, 'Lisa_Müller', '', '' ), 'de', 'Benutzerin:Lisa_Müller' ],

	[ new TitleValue( NS_MAIN, 'Remote_page', '', 'remotetestiw' ), 'en', 'remotetestiw:Remote_page' ],

	// non-existent namespace
	[ new TitleValue( 10000000, 'Foobar', '', '' ), 'en', 'Special:Badtitle/NS10000000:Foobar' ],

	[
	new PageIdentityValue( 37, NS_MAIN, 'Foo_Bar', PageIdentity::LOCAL ),
	'en',
	'Foo_Bar'
	],
	[
	new PageIdentityValue( 37, NS_USER, 'Hansi_Maier', PageIdentity::LOCAL ),
	'en',
	'User:Hansi_Maier'
	],
	[
	new PageIdentityValue( 37, NS_USER_TALK, 'hansi__maier', PageIdentity::LOCAL ),
	'en',
	'User_talk:hansi__maier'
	],
	[
	new PageIdentityValue( 37, NS_USER, 'Lisa_Müller', PageIdentity::LOCAL ),
	'de',
	'Benutzerin:Lisa_Müller'
	],
	[
	new PageIdentityValue( 37, NS_MAIN, 'Remote_page', PageIdentity::LOCAL ),
	'en',
	'Remote_page'
	],
	[
	new PageIdentityValue( 37, 10000000, 'Foobar', PageIdentity::LOCAL ),
	'en',
	'Special:Badtitle/NS10000000:Foobar'
	],
	];
	}

	/**
	* @dataProvider provideGetPrefixedDBkey
	*/
	public function testGetPrefixedDBkey( $title, $lang, $expected
	) {
	$codec = $this->makeCodec( $lang );
	$actual = $codec->getPrefixedDBkey( $title );

	$this->assertEquals( $expected, $actual );
	}

	public static function provideGetFullText() {
	return [
	[ new TitleValue( NS_MAIN, 'Foo_Bar', '' ), 'en', 'Foo Bar' ],
	[ new TitleValue( NS_USER, 'Hansi_Maier', 'stuff_and_so_on' ), 'en', 'User:Hansi Maier#stuff and so on' ],

	// No capitalization or normalization is applied while formatting!
	[ new TitleValue( NS_USER_TALK, 'hansi__maier', '' ), 'en', 'User talk:hansi maier' ],

	[ new TitleValue( NS_MAIN, 'Foo_Bar' ), 'en', 'Foo Bar' ],
	[ new TitleValue( NS_USER, 'Hansi_Maier' ), 'en', 'User:Hansi Maier' ],

	[
	new PageIdentityValue( 37, NS_MAIN, 'Foo_Bar', PageIdentity::LOCAL ),
	'en',
	'Foo Bar'
	],
	[
	new PageIdentityValue( 37, NS_USER, 'Hansi_Maier', PageIdentity::LOCAL ),
	'en',
	'User:Hansi Maier'
	],
	[
	new PageIdentityValue( 37, NS_USER_TALK, 'hansi__maier', PageIdentity::LOCAL ),
	'en',
	'User talk:hansi maier'
	],
	];
	}

	/**
	* @dataProvider provideGetFullText
	*/
	public function testGetFullText( $title, $lang, $expected ) {
	$codec = $this->makeCodec( $lang );
	$actual = $codec->getFullText( $title );

	$this->assertEquals( $expected, $actual );
	}

	public static function provideParseTitle() {
	// TODO: test capitalization and trimming
	// TODO: test unicode normalization

	return [
	[ ' : Hansi_Maier _ ', NS_MAIN, 'en',
	new TitleValue( NS_MAIN, 'Hansi_Maier', '' ) ],
	[ 'User:::1', NS_MAIN, 'de',
	new TitleValue( NS_USER, '0:0:0:0:0:0:0:1', '' ) ],
	[ ' lisa Müller', NS_USER, 'de',
	new TitleValue( NS_USER, 'Lisa_Müller', '' ) ],
	[ 'benutzerin:lisa Müller#stuff', NS_MAIN, 'de',
	new TitleValue( NS_USER, 'Lisa_Müller', 'stuff' ) ],

	[ ':Category:Quux', NS_MAIN, 'en',
	new TitleValue( NS_CATEGORY, 'Quux', '' ) ],
	[ 'Category:Quux', NS_MAIN, 'en',
	new TitleValue( NS_CATEGORY, 'Quux', '' ) ],
	[ 'Category:Quux', NS_CATEGORY, 'en',
	new TitleValue( NS_CATEGORY, 'Quux', '' ) ],
	[ 'Quux', NS_CATEGORY, 'en',
	new TitleValue( NS_CATEGORY, 'Quux', '' ) ],
	[ ':Quux', NS_CATEGORY, 'en',
	new TitleValue( NS_MAIN, 'Quux', '' ) ],

	// getGenderCache() provides a mock that considers first
	// names ending in "a" to be female.

	[ 'a b c', NS_MAIN, 'en',
	new TitleValue( NS_MAIN, 'A_b_c' ) ],
	[ ' a b c ', NS_MAIN, 'en',
	new TitleValue( NS_MAIN, 'A_b_c' ) ],
	[ ' _ Foo __ Bar_ _', NS_MAIN, 'en',
	new TitleValue( NS_MAIN, 'Foo_Bar' ) ],

	// NOTE: cases copied from TitleTest::testSecureAndSplit. Keep in sync.
	[ 'Sandbox', NS_MAIN, 'en', ],
	[ 'A "B"', NS_MAIN, 'en', ],
	[ 'A \'B\'', NS_MAIN, 'en', ],
	[ '.com', NS_MAIN, 'en', ],
	[ '~', NS_MAIN, 'en', ],
	[ '"', NS_MAIN, 'en', ],
	[ '\'', NS_MAIN, 'en', ],

	[ 'Talk:Sandbox', NS_MAIN, 'en',
	new TitleValue( NS_TALK, 'Sandbox' ) ],
	[ 'Talk:Foo:Sandbox', NS_MAIN, 'en',
	new TitleValue( NS_TALK, 'Foo:Sandbox' ) ],
	[ 'File:Example.svg', NS_MAIN, 'en',
	new TitleValue( NS_FILE, 'Example.svg' ) ],
	[ 'File_talk:Example.svg', NS_MAIN, 'en',
	new TitleValue( NS_FILE_TALK, 'Example.svg' ) ],
	[ 'Foo/.../Sandbox', NS_MAIN, 'en',
	'Foo/.../Sandbox' ],
	[ 'Sandbox/...', NS_MAIN, 'en',
	'Sandbox/...' ],
	[ 'A~~', NS_MAIN, 'en',
	'A~~' ],
	// Length is 256 total, but only title part matters
	[ 'Category:' . str_repeat( 'x', 248 ), NS_MAIN, 'en',
	new TitleValue( NS_CATEGORY,
	'X' . str_repeat( 'x', 247 ) ) ],
	[ str_repeat( 'x', 252 ), NS_MAIN, 'en',
	'X' . str_repeat( 'x', 251 ) ],
	// Test decoding and normalization
	[ '"ñ"', NS_MAIN, 'en', new TitleValue( NS_MAIN, '"ñ"' ) ],
	[ 'X#ñ', NS_MAIN, 'en', new TitleValue( NS_MAIN, 'X', 'ñ' ) ],
	// target section parsing
	'empty fragment' => [ 'X#', NS_MAIN, 'en', new TitleValue( NS_MAIN, 'X' ) ],
	'only fragment' => [ '#', NS_MAIN, 'en', new TitleValue( NS_MAIN, '' ) ],
	'double hash' => [ 'X##', NS_MAIN, 'en', new TitleValue( NS_MAIN, 'X', '#' ) ],
	'fragment with hash' => [ 'X#z#z', NS_MAIN, 'en', new TitleValue( NS_MAIN, 'X', 'z#z' ) ],
	'fragment with space' => [ 'X#z z', NS_MAIN, 'en', new TitleValue( NS_MAIN, 'X', 'z z' ) ],
	'fragment with percent' => [ 'X#z%z', NS_MAIN, 'en', new TitleValue( NS_MAIN, 'X', 'z%z' ) ],
	'fragment with amp' => [ 'X#z&z', NS_MAIN, 'en', new TitleValue( NS_MAIN, 'X', 'z&z' ) ],
	'remotetestiw in user' => [ 'User:remotetestiw:', NS_MAIN, 'en', new TitleValue( NS_USER, 'Remotetestiw:' ) ],
	];
	}

	/**
	* @dataProvider provideParseTitle
	*/
	public function testParseTitle( $text, $ns, $lang, $title = null ) {
	if ( !( $title instanceof TitleValue ) ) {
	$title ??= str_replace( ' ', '_', trim( $text ) );
	$title = new TitleValue( NS_MAIN, $title, '' );
	}

	$codec = $this->makeCodec( $lang );
	$actual = $codec->parseTitle( $text, $ns );

	$this->assertEquals( $title, $actual );
	}

	public static function provideParseTitle_invalid() {
	return [
	[ 'User:#' ],
	[ '::' ],
	[ '::xx' ],
	[ '::##' ],
	[ ' :: x' ],

	[ 'Talk:File:Foo.jpg' ],
	[ 'Talk:localtestiw:Foo' ],
	[ '::1' ], // only valid in user namespace
	[ 'User::x' ], // leading ":" in a user name is only valid of IPv6 addresses
	[ 'remotetestiw:', NS_USER ],

	// NOTE: cases copied from TitleTest::testSecureAndSplit. Keep in sync.
	[ '' ],
	[ ':' ],
	[ '__ __' ],
	[ ' __ ' ],
	// Bad characters forbidden regardless of wgLegalTitleChars
	[ 'A [ B' ],
	[ 'A ] B' ],
	[ 'A { B' ],
	[ 'A } B' ],
	[ 'A < B' ],
	[ 'A > B' ],
	[ 'A \| B' ],
	// URL encoding
	[ 'A%20B' ],
	[ 'A%23B' ],
	[ 'A%2523B' ],
	// XML/HTML character entity references
	// Note: Commented out because they are not marked invalid by the PHP test as
	// Title::newFromText runs Sanitizer::decodeCharReferencesAndNormalize first.
	// [ 'A é B' ],
	// [ 'A é B' ],
	// [ 'A é B' ],
	// Subject of NS_TALK does not roundtrip to NS_MAIN
	[ 'Talk:File:Example.svg' ],
	// Directory navigation
	[ '.' ],
	[ '..' ],
	[ './Sandbox' ],
	[ '../Sandbox' ],
	[ 'Foo/./Sandbox' ],
	[ 'Foo/../Sandbox' ],
	[ 'Sandbox/.' ],
	[ 'Sandbox/..' ],
	// Tilde
	[ 'A ~~~ Name' ],
	[ 'A ~~~~ Signature' ],
	[ 'A ~~~~~ Timestamp' ],
	[ str_repeat( 'x', 256 ) ],
	// Namespace prefix without actual title
	[ 'Talk:' ],
	[ 'Category: ' ],
	[ 'Category: #bar' ],
	// Invalid Unicode
	[ "Apollo\x96Soyuz" ],
	// Input resulting from invalid Unicode being sanitized somewhere else
	[ "Apollo\u{FFFD}Soyuz" ],
	];
	}

	/**
	* @dataProvider provideParseTitle_invalid
	*/
	public function testParseTitle_invalid( $text, $ns = NS_MAIN ) {
	$this->expectException( MalformedTitleException::class );

	$codec = $this->makeCodec( 'en' );
	$codec->parseTitle( $text, $ns );
	}

	/**
	* @dataProvider provideMakeTitleValueSafe
	*/
	public function testMakeTitleValueSafe(
	$expected, $ns, $text, $fragment = '', $interwiki = '', $lang = 'en'
	) {
	$codec = $this->makeCodec( $lang );
	$this->assertEquals( $expected,
	$codec->makeTitleValueSafe( $ns, $text, $fragment, $interwiki ) );
	}

	/**
	* @dataProvider provideMakeTitleValueSafe
	* @covers \MediaWiki\Title\Title::makeTitleSafe
	* @covers \MediaWiki\Title\Title::makeName
	* @covers \MediaWiki\Title\Title::secureAndSplit
	*/
	public function testMakeTitleSafe(
	$expected, $ns, $text, $fragment = '', $interwiki = '', $lang = 'en'
	) {
	$codec = $this->makeCodec( $lang );
	$this->setService( 'TitleParser', $codec );
	$this->setService( 'TitleFormatter', $codec );

	$actual = Title::makeTitleSafe( $ns, $text, $fragment, $interwiki );

	if ( $expected ) {
	$this->assertNotNull( $actual );
	$expectedTitle = Title::newFromLinkTarget( $expected );
	$this->assertSame( $expectedTitle->getPrefixedDBkey(), $actual->getPrefixedDBkey() );
	} else {
	$this->assertNull( $actual );
	}
	}

	public static function provideMakeTitleValueSafe() {
	$ret = [
	'Nonexistent NS' => [ null, 942929, 'Test' ],
	'Linebreak in title' => [ null, NS_MAIN, "Test\nthis" ],
	'Pipe in title' => [ null, NS_MAIN, "Test\|this" ],
	'Simple page' => [ new TitleValue( NS_MAIN, 'Test' ), NS_MAIN, 'Test' ],

	// Fragments
	'Passed fragment' => [
	new TitleValue( NS_MAIN, 'Test', 'Fragment' ),
	NS_MAIN, 'Test', 'Fragment'
	],
	'Embedded fragment' => [
	new TitleValue( NS_MAIN, 'Test', 'Fragment' ),
	NS_MAIN, 'Test#Fragment'
	],
	'Passed fragment with spaces' => [
	// XXX Leading space is okay in fragment?
	new TitleValue( NS_MAIN, 'Test', ' Frag ment' ),
	NS_MAIN, ' Test ', " Frag_ment "
	],
	'Embedded fragment with spaces' => [
	// XXX Leading space is okay in fragment?
	new TitleValue( NS_MAIN, 'Test', ' Frag ment' ),
	NS_MAIN, " Test # Frag_ment "
	],
	// XXX Is it correct that these aren't normalized to spaces?
	'Passed fragment with leading tab' => [ null, NS_MAIN, "\tTest\t", "\tFragment" ],
	'Embedded fragment with leading tab' => [ null, NS_MAIN, "\tTest\t#\tFragment" ],
	'Passed fragment with trailing tab' => [ null, NS_MAIN, "\tTest\t", "Fragment\t" ],
	'Embedded fragment with trailing tab' => [ null, NS_MAIN, "\tTest\t#Fragment\t" ],
	'Passed fragment with interior tab' => [ null, NS_MAIN, "\tTest\t", "Frag\tment" ],
	'Embedded fragment with interior tab' => [ null, NS_MAIN, "\tTest\t#\tFrag\tment" ],

	// Interwikis
	'Passed local interwiki' => [
	new TitleValue( NS_MAIN, 'Test' ),
	NS_MAIN, 'Test', '', 'localtestiw'
	],
	'Embedded local interwiki' => [
	new TitleValue( NS_MAIN, 'Test' ),
	NS_MAIN, 'localtestiw:Test'
	],
	'Passed remote interwiki' => [
	new TitleValue( NS_MAIN, 'Test', '', 'remotetestiw' ),
	NS_MAIN, 'Test', '', 'remotetestiw'
	],
	'Embedded remote interwiki' => [
	new TitleValue( NS_MAIN, 'Test', '', 'remotetestiw' ),
	NS_MAIN, 'remotetestiw:Test'
	],
	// Interwiki prefixes are not case sensitive
	'Passed local interwiki with different case' => [
	new TitleValue( NS_MAIN, 'Test' ),
	NS_MAIN, 'Test', '', 'LocalTestIW'
	],
	'Embedded local interwiki with different case' => [
	new TitleValue( NS_MAIN, 'Test' ),
	NS_MAIN, 'LocalTestIW:Test'
	],
	'Passed remote interwiki with different case' => [
	new TitleValue( NS_MAIN, 'Test', '', 'remotetestiw' ),
	NS_MAIN, 'Test', '', 'RemoteTestIW'
	],
	'Embedded remote interwiki with different case' => [
	new TitleValue( NS_MAIN, 'Test', '', 'remotetestiw' ),
	NS_MAIN, 'RemoteTestIW:Test'
	],
	'Passed local interwiki with lowercase page name' => [
	new TitleValue( NS_MAIN, 'Test' ),
	NS_MAIN, 'test', '', 'localtestiw'
	],
	'Embedded local interwiki with lowercase page name' => [
	new TitleValue( NS_MAIN, 'Test' ),
	NS_MAIN, 'localtestiw:test'
	],
	// For remote we don't auto-capitalize
	'Passed remote interwiki with lowercase page name' => [
	new TitleValue( NS_MAIN, 'test', '', 'remotetestiw' ),
	NS_MAIN, 'test', '', 'remotetestiw'
	],
	'Embedded remote interwiki with lowercase page name' => [
	new TitleValue( NS_MAIN, 'test', '', 'remotetestiw' ),
	NS_MAIN, 'remotetestiw:test'
	],

	// Fragment and interwiki
	'Fragment and local interwiki' => [
	new TitleValue( NS_MAIN, 'Test', 'Fragment' ),
	NS_MAIN, 'Test', 'Fragment', 'localtestiw'
	],
	'Fragment and remote interwiki' => [
	new TitleValue( NS_MAIN, 'Test', 'Fragment', 'remotetestiw' ),
	NS_MAIN, 'Test', 'Fragment', 'remotetestiw'
	],
	'Fragment and local interwiki and non-main namespace' => [
	new TitleValue( NS_TALK, 'Test', 'Fragment' ),
	NS_TALK, 'Test', 'Fragment', 'localtestiw'
	],
	// We don't know the foreign wiki's namespaces, so it will always be NS_MAIN
	'Fragment and remote interwiki and non-main namespace' => [
	new TitleValue( NS_MAIN, 'Talk:Test', 'Fragment', 'remotetestiw' ),
	NS_TALK, 'Test', 'Fragment', 'remotetestiw'
	],

	// Whitespace normalization and Unicode stripping
	'Name with space' => [
	new TitleValue( NS_MAIN, 'Test_test' ),
	NS_MAIN, 'Test test'
	],
	'Unicode bidi override characters' => [
	new TitleValue( NS_MAIN, 'Test' ),
	NS_MAIN, "\u{200E}T\u{200F}e\u{202A}s\u{202B}t\u{202C}\u{202D}\u{202E}"
	],
	'Invalid UTF-8 sequence' => [ null, NS_MAIN, "Te\x80\xf0st" ],
	'Whitespace collapsing' => [
	new TitleValue( NS_MAIN, 'Test_test' ),
	NS_MAIN, "Test _\u{00A0}\u{1680}\u{180E}\u{2000}\u{2001}\u{2002}\u{2003}\u{2004}" .
	"\u{2005}\u{2006}\u{2007}\u{2008}\u{2009}\u{200A}\u{2028}\u{2029}\u{202F}" .
	"\u{205F}\u{3000}test"
	],
	'UTF8_REPLACEMENT' => [ null, NS_MAIN, UtfNormal\Constants::UTF8_REPLACEMENT ],

	// Namespace prefixes
	'Talk:Test' => [
	new TitleValue( NS_TALK, 'Test' ),
	NS_MAIN, 'Talk:Test'
	],
	'Test in talk NS' => [
	new TitleValue( NS_TALK, 'Test' ),
	NS_TALK, 'Test'
	],
	'Talkk:Test' => [
	new TitleValue( NS_MAIN, 'Talkk:Test' ),
	NS_MAIN, 'Talkk:Test'
	],
	'Talk:Talk:Test' => [ null, NS_MAIN, 'Talk:Talk:Test' ],
	'Talk:User:Test' => [ null, NS_MAIN, 'Talk:User:Test' ],
	'User:Talk:Test' => [
	new TitleValue( NS_USER, 'Talk:Test' ),
	NS_MAIN, 'User:Talk:Test'
	],
	'User:Test in talk NS' => [ null, NS_TALK, 'User:Test' ],
	'Talk:Test in talk NS' => [ null, NS_TALK, 'Talk:Test' ],
	'User:Test in user NS' => [
	new TitleValue( NS_USER, 'User:Test' ),
	NS_USER, 'User:Test'
	],
	'Talk:Test in user NS' => [
	new TitleValue( NS_USER, 'Talk:Test' ),
	NS_USER, 'Talk:Test'
	],

	// Initial colon
	':Test' => [
	new TitleValue( NS_MAIN, 'Test' ),
	NS_MAIN, ':Test'
	],
	':Talk:Test' => [
	new TitleValue( NS_TALK, 'Test' ),
	NS_MAIN, ':Talk:Test'
	],
	':localtestiw:Test' => [
	new TitleValue( NS_MAIN, 'Test' ),
	NS_MAIN, ':localtestiw:Test'
	],
	':remotetestiw:Test' => [
	new TitleValue( NS_MAIN, 'Test', '', 'remotetestiw' ),
	NS_MAIN, ':remotetestiw:Test'
	],
	// XXX Is this correct? Why is it different from remote?
	'localtestiw::Test' => [ null, NS_MAIN, 'localtestiw::Test' ],
	'remotetestiw::Test' => [
	new TitleValue( NS_MAIN, 'Test', '', 'remotetestiw' ),
	NS_MAIN, 'remotetestiw::Test'
	],
	// XXX Is this correct? Why is it different from remote?
	'localtestiw:: Test' => [ null, NS_MAIN, 'localtestiw:: Test' ],
	'remotetestiw:: Test' => [
	new TitleValue( NS_MAIN, 'Test', '', 'remotetestiw' ),
	NS_MAIN, 'remotetestiw:: Test'
	],

	// Empty titles
	'Empty title' => [ null, NS_MAIN, '' ],
	'Empty title with namespace' => [ null, NS_USER, '' ],
	'Local interwiki with empty page name' => [
	new TitleValue( NS_MAIN, 'Main_Page' ),
	NS_MAIN, 'localtestiw:'
	],
	'Remote interwiki with empty page name' => [
	// XXX Is this correct? This is supposed to redirect to the main page remotely?
	new TitleValue( NS_MAIN, '', '', 'remotetestiw' ),
	NS_MAIN, 'remotetestiw:'
	],

	// Whitespace-only titles
	'Whitespace-only title' => [ null, NS_MAIN, "\t\n" ],
	'Whitespace-only title with namespace' => [ null, NS_USER, " _ " ],
	'Local interwiki with whitespace-only page name' => [
	// XXX Is whitespace-only really supposed to be different from empty?
	null,
	NS_MAIN, "localtestiw:_\t"
	],
	'Remote interwiki with whitespace-only page name' => [
	// XXX Is whitespace-only really supposed to be different from empty?
	null,
	NS_MAIN, "remotetestiw:\t_\n\r"
	],

	// Namespace and interwiki
	'Talk:localtestiw:Test' => [ null, NS_MAIN, 'Talk:localtestiw:Test' ],
	'Talk:remotetestiw:Test' => [ null, NS_MAIN, 'Talk:remotetestiw:Test' ],
	'User:localtestiw:Test' => [
	new TitleValue( NS_USER, 'Localtestiw:Test' ),
	NS_MAIN, 'User:localtestiw:Test'
	],
	'User:remotetestiw:Test' => [
	new TitleValue( NS_USER, 'Remotetestiw:Test' ),
	NS_MAIN, 'User:remotetestiw:Test'
	],
	'localtestiw:Test in user namespace' => [
	new TitleValue( NS_USER, 'Localtestiw:Test' ),
	NS_USER, 'localtestiw:Test'
	],
	'remotetestiw:Test in user namespace' => [
	new TitleValue( NS_USER, 'Remotetestiw:Test' ),
	NS_USER, 'remotetestiw:Test'
	],
	'localtestiw:talk:test' => [
	new TitleValue( NS_TALK, 'Test' ),
	NS_MAIN, 'localtestiw:talk:test'
	],
	'remotetestiw:talk:test' => [
	new TitleValue( NS_MAIN, 'talk:test', '', 'remotetestiw' ),
	NS_MAIN, 'remotetestiw:talk:test'
	],

	// Invalid chars
	'Test[test' => [ null, NS_MAIN, 'Test[test' ],

	// Long titles
	'255 chars long' => [
	new TitleValue( NS_MAIN, str_repeat( 'A', 255 ) ),
	NS_MAIN, str_repeat( 'A', 255 )
	],
	'255 chars long in user NS' => [
	new TitleValue( NS_USER, str_repeat( 'A', 255 ) ),
	NS_USER, str_repeat( 'A', 255 )
	],
	'User:255 chars long' => [
	new TitleValue( NS_USER, str_repeat( 'A', 255 ) ),
	NS_MAIN, 'User:' . str_repeat( 'A', 255 )
	],
	'256 chars long' => [ null, NS_MAIN, str_repeat( 'A', 256 ) ],
	'256 chars long in user NS' => [ null, NS_USER, str_repeat( 'A', 256 ) ],
	'User:256 chars long' => [ null, NS_MAIN, 'User:' . str_repeat( 'A', 256 ) ],

	'512 chars long in special NS' => [
	new TitleValue( NS_SPECIAL, str_repeat( 'A', 512 ) ),
	NS_SPECIAL, str_repeat( 'A', 512 )
	],
	'Special:512 chars long' => [
	new TitleValue( NS_SPECIAL, str_repeat( 'A', 512 ) ),
	NS_MAIN, 'Special:' . str_repeat( 'A', 512 )
	],
	'513 chars long in special NS' => [ null, NS_SPECIAL, str_repeat( 'A', 513 ) ],
	'Special:513 chars long' => [ null, NS_MAIN, 'Special:' . str_repeat( 'A', 513 ) ],

	// IP addresses
	'User:000.000.000' => [
	new TitleValue( NS_USER, '000.000.000' ),
	NS_MAIN, 'User:000.000.000'
	],
	'User:000.000.000.000' => [
	new TitleValue( NS_USER, '0.0.0.0' ),
	NS_MAIN, 'User:000.000.000.000'
	],
	'000.000.000.000' => [
	new TitleValue( NS_MAIN, '000.000.000.000' ),
	NS_MAIN, '000.000.000.000'
	],
	'User:1.1.256.000' => [
	new TitleValue( NS_USER, '1.1.256.000' ),
	NS_MAIN, 'User:1.1.256.000'
	],
	'User:1.1.255.000' => [
	new TitleValue( NS_USER, '1.1.255.0' ),
	NS_MAIN, 'User:1.1.255.000'
	],
	// TODO More IP address sanitization tests
	];

	// Invalid and valid dots
	foreach ( [ '.', '..', '...' ] as $dots ) {
	foreach ( [ '?', '?/', '?/Test', 'Test/?/Test', '/?', 'Test/?', '?Test', 'Test?Test',
	'Test?' ] as $pattern ) {
	$test = str_replace( '?', $dots, $pattern );
	if ( $dots === '...' \|\| in_array( $pattern, [ '?Test', 'Test?Test', 'Test?' ] ) ) {
	$expectedMain = new TitleValue( NS_MAIN, $test );
	$expectedUser = new TitleValue( NS_USER, $test );
	} else {
	$expectedMain = $expectedUser = null;
	}
	$ret[$test] = [ $expectedMain, NS_MAIN, $test ];
	$ret["$test in user NS"] = [ $expectedUser, NS_USER, $test ];
	$ret["User:$test"] = [ $expectedUser, NS_MAIN, "User:$test" ];
	}
	}

	// Invalid and valid tildes
	foreach ( [ '~~', '~~~' ] as $tildes ) {
	foreach ( [ '?', 'Test?', '?Test', 'Test?Test' ] as $pattern ) {
	$test = str_replace( '?', $tildes, $pattern );
	if ( $tildes === '~~' ) {
	$expectedMain = new TitleValue( NS_MAIN, $test );
	$expectedUser = new TitleValue( NS_USER, $test );
	} else {
	$expectedMain = $expectedUser = null;
	}
	$ret[$test] = [ $expectedMain, NS_MAIN, $test ];
	$ret["$test in user NS"] = [ $expectedUser, NS_USER, $test ];
	$ret["User:$test"] = [ $expectedUser, NS_MAIN, "User:$test" ];
	}
	}

	return $ret;
	}

	public static function provideGetNamespaceName() {
	return [
	[ NS_MAIN, 'Foo', 'en', '' ],
	[ NS_USER, 'Foo', 'en', 'User' ],
	[ NS_USER, 'Hansi Maier', 'de', 'Benutzer' ],

	// getGenderCache() provides a mock that considers first
	// names ending in "a" to be female.
	[ NS_USER, 'Lisa Müller', 'de', 'Benutzerin' ],
	];
	}

	/**
	* @dataProvider provideGetNamespaceName
	*/
	public function testGetNamespaceName( $namespace, $text, $lang, $expected ) {
	$codec = $this->makeCodec( $lang );
	$name = $codec->getNamespaceName( $namespace, $text );

	$this->assertEquals( $expected, $name );
	}
	}

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