CollationTest.php

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<?php
class CollationTest extends MediaWikiLangTestCase {
        protected function setUp() {
                parent::setUp();
                if ( !extension_loaded( 'intl' ) ) {
                        $this->markTestSkipped( 'These tests require intl extension' );
                }
        }

        function testIsPrefix( $lang, $base, $extended ) {
                $cp = Collator::create( $lang );
                $cp->setStrength( Collator::PRIMARY );
                $baseBin = $cp->getSortKey( $base );
                // Remove sortkey terminator
                $baseBin = rtrim( $baseBin, "\0" );
                $extendedBin = $cp->getSortKey( $extended );
                $this->assertStringStartsWith( $baseBin, $extendedBin, "$base is not a prefix of $extended" );
        }

        function prefixDataProvider() {
                return array(
                        array( 'en', 'A', 'AA' ),
                        array( 'en', 'A', 'AAA' ),
                        array( 'en', 'Д', 'ДЂ' ),
                        array( 'en', 'Д', 'ДA' ),
                        // 'Ʒ' should expand to 'Z ' (note space).
                        array( 'fi', 'Z', 'Ʒ' ),
                        // 'Þ' should expand to 'th'
                        array( 'sv', 't', 'Þ' ),
                        // Javanese is a limited use alphabet, so should have 3 bytes
                        // per character, so do some tests with it.
                        array( 'en', 'ꦲ', 'ꦲꦤ' ),
                        array( 'en', 'ꦲ', 'ꦲД' ),
                        array( 'en', 'A', 'Aꦲ' ),
                );
        }
        function testNotIsPrefix( $lang, $base, $extended ) {
                $cp = Collator::create( $lang );
                $cp->setStrength( Collator::PRIMARY );
                $baseBin = $cp->getSortKey( $base );
                // Remove sortkey terminator
                $baseBin = rtrim( $baseBin, "\0" );
                $extendedBin = $cp->getSortKey( $extended );
                $this->assertStringStartsNotWith( $baseBin, $extendedBin, "$base is a prefix of $extended" );
        }

        function notPrefixDataProvider() {
                return array(
                        array( 'en', 'A', 'B' ),
                        array( 'en', 'AC', 'ABC' ),
                        array( 'en', 'Z', 'Ʒ' ),
                        array( 'en', 'A', 'ꦲ' ),
                );
        }

        function testGetFirstLetter( $collation, $string, $firstLetter ) {
                $col = Collation::factory( $collation );
                $this->assertEquals( $firstLetter, $col->getFirstLetter( $string ) );
        }
        function firstLetterProvider() {
                return array(
                        array( 'uppercase', 'Abc', 'A' ),
                        array( 'uppercase', 'abc', 'A' ),
                        array( 'identity', 'abc', 'a' ),
                        array( 'uca-en', 'abc', 'A' ),
                        array( 'uca-en', ' ', ' ' ),
                        array( 'uca-en', 'Êveryone', 'E' ),
                        array( 'uca-vi', 'Êveryone', 'Ê' ),
                        // Make sure thorn is not a first letter.
                        array( 'uca-sv', 'The', 'T' ),
                        array( 'uca-sv', 'Å', 'Å' ),
                        array( 'uca-hu', 'dzsdo', 'Dzs' ),
                        array( 'uca-hu', 'dzdso', 'Dz' ),
                        array( 'uca-hu', 'CSD', 'Cs' ),
                        array( 'uca-root', 'CSD', 'C' ),
                        array( 'uca-fi', 'Ǥ', 'G' ),
                        array( 'uca-fi', 'Ŧ', 'T' ),
                        array( 'uca-fi', 'Ʒ', 'Z' ),
                        array( 'uca-fi', 'Ŋ', 'N' ),
                );
        }
}