FallbackTest.php

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<?php

class FallbackTest extends MediaWikiTestCase {

    public function testFallbackMbstringFunctions() {

        if ( !extension_loaded( 'mbstring' ) ) {
            $this->markTestSkipped( "The mb_string functions must be installed to test the fallback functions" );
        }

        $sampleUTF = "Östergötland_coat_of_arms.png";

        //mb_substr
        $substr_params = array(
            array( 0, 0 ),
            array( 5, -4 ),
            array( 33 ),
            array( 100, -5 ),
            array( -8, 10 ),
            array( 1, 1 ),
            array( 2, -1 )
        );

        foreach ( $substr_params as $param_set ) {
            $old_param_set = $param_set;
            array_unshift( $param_set, $sampleUTF );

            $this->assertEquals(
                call_user_func_array( 'mb_substr', $param_set ),
                call_user_func_array( 'Fallback::mb_substr', $param_set ),
                'Fallback mb_substr with params ' . implode( ', ', $old_param_set )
            );
        }

        //mb_strlen
        $this->assertEquals(
            mb_strlen( $sampleUTF ),
            Fallback::mb_strlen( $sampleUTF ),
            'Fallback mb_strlen'
        );

        //mb_str(r?)pos
        $strpos_params = array(
            //array( 'ter' ),
            //array( 'Ö' ),
            //array( 'Ö', 3 ),
            //array( 'oat_', 100 ),
            //array( 'c', -10 ),
            //Broken for now
        );

        foreach ( $strpos_params as $param_set ) {
            $old_param_set = $param_set;
            array_unshift( $param_set, $sampleUTF );

            $this->assertEquals(
                call_user_func_array( 'mb_strpos', $param_set ),
                call_user_func_array( 'Fallback::mb_strpos', $param_set ),
                'Fallback mb_strpos with params ' . implode( ', ', $old_param_set )
            );

            $this->assertEquals(
                call_user_func_array( 'mb_strrpos', $param_set ),
                call_user_func_array( 'Fallback::mb_strrpos', $param_set ),
                'Fallback mb_strrpos with params ' . implode( ', ', $old_param_set )
            );
        }
    }

}