wfBCP47Test.php

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<?php
class wfBCP47 extends MediaWikiTestCase {
        function testBCP47( $code, $expected ) {
                $code = strtolower( $code );
                $this->assertEquals( $expected, wfBCP47($code),
                        "Applying BCP47 standard to lower case '$code'"
                );

                $code = strtoupper( $code );
                $this->assertEquals( $expected, wfBCP47($code),
                        "Applying BCP47 standard to upper case '$code'"
                );
        }

        function provideLanguageCodes() {
                return array(
                        // Extracted from BCP47 (list not exhaustive)
                        # 2.1.1
                        array( 'en-ca-x-ca'    , 'en-CA-x-ca'     ),
                        array( 'sgn-be-fr'     , 'sgn-BE-FR'      ),
                        array( 'az-latn-x-latn', 'az-Latn-x-latn' ),
                        # 2.2
                        array( 'sr-Latn-RS', 'sr-Latn-RS' ),
                        array( 'az-arab-ir', 'az-Arab-IR' ),

                        # 2.2.5
                        array( 'sl-nedis'  , 'sl-nedis'   ),
                        array( 'de-ch-1996', 'de-CH-1996' ),

                        # 2.2.6
                        array(
                                'en-latn-gb-boont-r-extended-sequence-x-private',
                                'en-Latn-GB-boont-r-extended-sequence-x-private'
                        ),

                        // Examples from BCP47 Appendix A
                        # Simple language subtag:
                        array( 'DE', 'de' ),
                        array( 'fR', 'fr' ),
                        array( 'ja', 'ja' ),

                        # Language subtag plus script subtag:
                        array( 'zh-hans', 'zh-Hans'),
                        array( 'sr-cyrl', 'sr-Cyrl'),
                        array( 'sr-latn', 'sr-Latn'),

                        # Extended language subtags and their primary language subtag
                        # counterparts:
                        array( 'zh-cmn-hans-cn', 'zh-cmn-Hans-CN' ),
                        array( 'cmn-hans-cn'   , 'cmn-Hans-CN'    ),
                        array( 'zh-yue-hk'     , 'zh-yue-HK'      ),
                        array( 'yue-hk'        , 'yue-HK'         ),

                        # Language-Script-Region:
                        array( 'zh-hans-cn', 'zh-Hans-CN' ),
                        array( 'sr-latn-RS', 'sr-Latn-RS' ),

                        # Language-Variant:
                        array( 'sl-rozaj'      , 'sl-rozaj'       ),
                        array( 'sl-rozaj-biske', 'sl-rozaj-biske' ),
                        array( 'sl-nedis'      , 'sl-nedis'       ),

                        # Language-Region-Variant:
                        array( 'de-ch-1901'  , 'de-CH-1901'  ),
                        array( 'sl-it-nedis' , 'sl-IT-nedis' ),

                        # Language-Script-Region-Variant:
                        array( 'hy-latn-it-arevela', 'hy-Latn-IT-arevela' ),

                        # Language-Region:
                        array( 'de-de' , 'de-DE' ),
                        array( 'en-us' , 'en-US' ),
                        array( 'es-419', 'es-419'),

                        # Private use subtags:
                        array( 'de-ch-x-phonebk'      , 'de-CH-x-phonebk' ),
                        array( 'az-arab-x-aze-derbend', 'az-Arab-x-aze-derbend' ),
                        # Private use registry values:
                        array( 'x-whatever', 'x-whatever' ),
                        array( 'qaa-qaaa-qm-x-southern', 'qaa-Qaaa-QM-x-southern' ),
                        array( 'de-qaaa'   , 'de-Qaaa'    ),
                        array( 'sr-latn-qm', 'sr-Latn-QM' ),
                        array( 'sr-qaaa-rs', 'sr-Qaaa-RS' ),

                        # Tags that use extensions
                        array( 'en-us-u-islamcal', 'en-US-u-islamcal' ),
                        array( 'zh-cn-a-myext-x-private', 'zh-CN-a-myext-x-private' ),
                        array( 'en-a-myext-b-another', 'en-a-myext-b-another' ),

                        # Invalid:
                        // de-419-DE
                        // a-DE
                        // ar-a-aaa-b-bbb-a-ccc
        
                /*      
                        // ISO 15924 :
                        array( 'sr-Cyrl', 'sr-Cyrl' ),
                        # @todo FIXME: Fix our function?
                        array( 'SR-lATN', 'sr-Latn' ),
                        array( 'fr-latn', 'fr-Latn' ),
                        // Use lowercase for single segment
                        // ISO 3166-1-alpha-2 code
                        array( 'US', 'us' ),  # USA
                        array( 'uS', 'us' ),  # USA
                        array( 'Fr', 'fr' ),  # France
                        array( 'va', 'va' ),  # Holy See (Vatican City State)
                 */);
        }
}