LanguageTrTest.php

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<?php
class LanguageTrTest extends LanguageClassesTestCase {

    public function testDottedAndDotlessI( $func, $input, $inputCase, $expected ) {
        if ( $func == 'ucfirst' ) {
            $res = $this->getLang()->ucfirst( $input );
        } elseif ( $func == 'lcfirst' ) {
            $res = $this->getLang()->lcfirst( $input );
        } else {
            throw new MWException( __METHOD__ . " given an invalid function name '$func'" );
        }

        $msg = "Converting $inputCase case '$input' with $func should give '$expected'";

        $this->assertEquals( $expected, $res, $msg );
    }

    public static function provideDottedAndDotlessI() {
        return array(
            # function, input, input case, expected
            # Case changed:
            array( 'ucfirst', 'ı', 'lower', 'I' ),
            array( 'ucfirst', 'i', 'lower', 'İ' ),
            array( 'lcfirst', 'I', 'upper', 'ı' ),
            array( 'lcfirst', 'İ', 'upper', 'i' ),

            # Already using the correct case
            array( 'ucfirst', 'I', 'upper', 'I' ),
            array( 'ucfirst', 'İ', 'upper', 'İ' ),
            array( 'lcfirst', 'ı', 'lower', 'ı' ),
            array( 'lcfirst', 'i', 'lower', 'i' ),

            # A real example taken from bug 28040 using
            # http://tr.wikipedia.org/wiki/%C4%B0Phone
            array( 'lcfirst', 'iPhone', 'lower', 'iPhone' ),

            # next case is valid in Turkish but are different words if we
            # consider IPhone is English!
            array( 'lcfirst', 'IPhone', 'upper', 'ıPhone' ),

        );
    }
}