<?php

class TitleTest extends MediaWikiTestCase {

	function testLegalChars() {
		$titlechars = Title::legalChars();

		foreach ( range( 1, 255 ) as $num ) {
			$chr = chr( $num );
			if ( strpos( "#[]{}<>|", $chr ) !== false || preg_match( "/[\\x00-\\x1f\\x7f]/", $chr ) ) {
				$this->assertFalse( (bool)preg_match( "/[$titlechars]/", $chr ), "chr($num) = $chr is not a valid titlechar" );
			} else {
				$this->assertTrue( (bool)preg_match( "/[$titlechars]/", $chr ), "chr($num) = $chr is a valid titlechar" );
			}
		}
	}

	/**
	 * @dataProvider dataBug31100
	 */
	function testBug31100FixSpecialName( $text, $expectedParam ) {
		$title = Title::newFromText( $text );
		$fixed = $title->fixSpecialName();
		$stuff = explode( '/', $fixed->getDbKey(), 2 );
		if ( count( $stuff ) == 2 ) {
			$par = $stuff[1];
		} else {
			$par = null;
		}
		$this->assertEquals( $expectedParam, $par, "Bug 31100 regression check: Title->fixSpecialName() should preserve parameter" );
	}

	function dataBug31100() {
		return array(
			array( 'Special:Version', null ),
			array( 'Special:Version/', '' ),
			array( 'Special:Version/param', 'param' ),
		);
	}
	
	/**
	 * Auth-less test of Title::isValidMoveOperation
	 * 
	 * @param string $source
	 * @param string $target
	 * @param array|string|true $requiredErrors
	 * @group Database
	 * @dataProvider dataTestIsValidMoveOperation
	 */
	function testIsValidMoveOperation( $source, $target, $expected ) {
		$title = Title::newFromText( $source );
		$nt = Title::newFromText( $target );
		$errors = $title->isValidMoveOperation( $nt, false );
		if ( $expected === true ) {
			$this->assertTrue( $errors );
		} else {
			$errors = $this->flattenErrorsArray( $errors );
			foreach ( (array)$expected as $error ) {
				$this->assertContains( $error, $errors );
			}
		}
	}
	
	function flattenErrorsArray( $errors ) {
		$result = array();
		foreach ( $errors as $error ) {
			$result[] = $error[0];
		}
		return $result;
	}
	
	function dataTestIsValidMoveOperation() {
		return array( 
			array( 'Test', 'Test', 'selfmove' ),
			array( 'File:Test.jpg', 'Page', 'imagenocrossnamespace' )
		);
	}
	
	
}