wfBCP47Test.php

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<?php
class WfBCP47Test extends MediaWikiTestCase {
    public 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'"
        );
    }

    public static 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
        );
    }
}