LanguageCodeTest.php

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<?php
 
class LanguageCodeTest extends PHPUnit\Framework\TestCase {
 
    use MediaWikiCoversValidator;
 
    public function testConstructor() {
        $instance = new LanguageCode();
 
        $this->assertInstanceOf( LanguageCode::class, $instance );
    }
 
    public function testGetDeprecatedCodeMapping() {
        $map = LanguageCode::getDeprecatedCodeMapping();
 
        $this->assertInternalType( 'array', $map );
        $this->assertContainsOnly( 'string', array_keys( $map ) );
        $this->assertArrayNotHasKey( '', $map );
        $this->assertContainsOnly( 'string', $map );
        $this->assertNotContains( '', $map );
 
        // Codes special to MediaWiki should never appear in a map of "deprecated" codes
        $this->assertArrayNotHasKey( 'qqq', $map, 'documentation' );
        $this->assertNotContains( 'qqq', $map, 'documentation' );
        $this->assertArrayNotHasKey( 'qqx', $map, 'debug code' );
        $this->assertNotContains( 'qqx', $map, 'debug code' );
 
        // Valid language codes that are currently not "deprecated"
        $this->assertArrayNotHasKey( 'bh', $map, 'family of Bihari languages' );
        $this->assertArrayNotHasKey( 'no', $map, 'family of Norwegian languages' );
        $this->assertArrayNotHasKey( 'simple', $map );
    }
 
    public function testReplaceDeprecatedCodes() {
        $this->assertEquals( 'gsw', LanguageCode::replaceDeprecatedCodes( 'als' ) );
        $this->assertEquals( 'gsw', LanguageCode::replaceDeprecatedCodes( 'gsw' ) );
        $this->assertEquals( null, LanguageCode::replaceDeprecatedCodes( null ) );
    }
 
    public function testBcp47( $code, $expected ) {
        $code = strtolower( $code );
        $this->assertEquals( $expected, LanguageCode::bcp47( $code ),
            "Applying BCP47 standard to lower case '$code'"
        );
 
        $code = strtoupper( $code );
        $this->assertEquals( $expected, LanguageCode::bcp47( $code ),
            "Applying BCP47 standard to upper case '$code'"
        );
    }
 
    public static function provideLanguageCodes() {
        return [
            // Extracted from BCP 47 (list not exhaustive)
            # 2.1.1
            [ 'en-ca-x-ca', 'en-CA-x-ca' ],
            [ 'sgn-be-fr', 'sgn-BE-FR' ],
            [ 'az-latn-x-latn', 'az-Latn-x-latn' ],
            # 2.2
            [ 'sr-Latn-RS', 'sr-Latn-RS' ],
            [ 'az-arab-ir', 'az-Arab-IR' ],
 
            # 2.2.5
            [ 'sl-nedis', 'sl-nedis' ],
            [ 'de-ch-1996', 'de-CH-1996' ],
 
            # 2.2.6
            [
                'en-latn-gb-boont-r-extended-sequence-x-private',
                'en-Latn-GB-boont-r-extended-sequence-x-private'
            ],
 
            // Examples from BCP 47 Appendix A
            # Simple language subtag:
            [ 'DE', 'de' ],
            [ 'fR', 'fr' ],
            [ 'ja', 'ja' ],
 
            # Language subtag plus script subtag:
            [ 'zh-hans', 'zh-Hans' ],
            [ 'sr-cyrl', 'sr-Cyrl' ],
            [ 'sr-latn', 'sr-Latn' ],
 
            # Extended language subtags and their primary language subtag
            # counterparts:
            [ 'zh-cmn-hans-cn', 'zh-cmn-Hans-CN' ],
            [ 'cmn-hans-cn', 'cmn-Hans-CN' ],
            [ 'zh-yue-hk', 'zh-yue-HK' ],
            [ 'yue-hk', 'yue-HK' ],
 
            # Language-Script-Region:
            [ 'zh-hans-cn', 'zh-Hans-CN' ],
            [ 'sr-latn-RS', 'sr-Latn-RS' ],
 
            # Language-Variant:
            [ 'sl-rozaj', 'sl-rozaj' ],
            [ 'sl-rozaj-biske', 'sl-rozaj-biske' ],
            [ 'sl-nedis', 'sl-nedis' ],
 
            # Language-Region-Variant:
            [ 'de-ch-1901', 'de-CH-1901' ],
            [ 'sl-it-nedis', 'sl-IT-nedis' ],
 
            # Language-Script-Region-Variant:
            [ 'hy-latn-it-arevela', 'hy-Latn-IT-arevela' ],
 
            # Language-Region:
            [ 'de-de', 'de-DE' ],
            [ 'en-us', 'en-US' ],
            [ 'es-419', 'es-419' ],
 
            # Private use subtags:
            [ 'de-ch-x-phonebk', 'de-CH-x-phonebk' ],
            [ 'az-arab-x-aze-derbend', 'az-Arab-x-aze-derbend' ],
            # Private use registry values:
            [ 'x-whatever', 'x-whatever' ],
            [ 'qaa-qaaa-qm-x-southern', 'qaa-Qaaa-QM-x-southern' ],
            [ 'de-qaaa', 'de-Qaaa' ],
            [ 'sr-latn-qm', 'sr-Latn-QM' ],
            [ 'sr-qaaa-rs', 'sr-Qaaa-RS' ],
 
            # Tags that use extensions
            [ 'en-us-u-islamcal', 'en-US-u-islamcal' ],
            [ 'zh-cn-a-myext-x-private', 'zh-CN-a-myext-x-private' ],
            [ 'en-a-myext-b-another', 'en-a-myext-b-another' ],
 
            # Invalid:
            // de-419-DE
            // a-DE
            // ar-a-aaa-b-bbb-a-ccc
        ];
    }
 
}