, * - inactive locales are links to /locale?set=...&return=..., * - every item contains a flag SVG, * - the rendered label is in the current locale's language. */ final class LocaleSwitcherTest extends TestCase { #[Test] public function rendersFourItemsForAllSupportedLocales(): void { $html = (new LocaleSwitcher('en', '/'))->render(); self::assertStringContainsString('

. The active // locale renders as (no hreflang). Together all // 4 must be present in either form. foreach (Locale::SUPPORTED as $code) { self::assertTrue( str_contains($html, 'hreflang="' . $code . '"') || str_contains($html, 'lang="' . $code . '"'), "locale '$code' is missing from switcher", ); } self::assertSame(4, substr_count($html, 'class="flag"'), 'expected 4 flag SVGs'); } #[Test] public function marksCurrentLocaleWithAriaCurrentAndSpan(): void { $html = (new LocaleSwitcher('uk', '/'))->render(); self::assertStringContainsString('is-current', $html); self::assertStringContainsString('aria-current="true"', $html); self::assertStringContainsString('lang="uk"', $html); // active option must be a , not an self::assertMatchesRegularExpression( '/]*aria-current="true"[^>]*lang="uk"/', $html, ); } #[Test] public function inactiveLocalesAreLinksToLocaleController(): void { $html = (new LocaleSwitcher('de', '/foo/bar'))->render(); self::assertStringContainsString('href="/locale?set=en&return=%2Ffoo%2Fbar"', $html); self::assertStringContainsString('href="/locale?set=uk&return=%2Ffoo%2Fbar"', $html); self::assertStringContainsString('href="/locale?set=ru&return=%2Ffoo%2Fbar"', $html); } #[Test] public function stripsQueryAndFragmentFromReturnPath(): void { $html = (new LocaleSwitcher('de', '/?lang=uk#kontakt'))->render(); // sanitisePath keeps only the path part self::assertStringContainsString('return=%2F', $html); self::assertStringNotContainsString('return=%2F%3Flang', $html); self::assertStringNotContainsString('return=%2F%23kontakt', $html); } #[Test] public function rejectsPathsThatDoNotStartWithSlash(): void { $html = (new LocaleSwitcher('de', 'https://evil.example/'))->render(); // sanitisePath falls back to '/' self::assertStringContainsString('return=%2F', $html); self::assertStringNotContainsString('evil.example', $html); } /** * @return array */ public static function flagDataProvider(): array { return [ 'DE Germany' => ['de', '#FFCC00'], 'EN UnionJack' => ['en', '#C8102E'], 'UK Ukraine' => ['uk', '#FFD500'], 'RU Russia' => ['ru', '#D52B1E'], ]; } #[Test] public function flagSvgReturnsValidSvgForEverySupportedLocale(): void { foreach (Locale::SUPPORTED as $code) { $svg = LocaleSwitcher::flagSvg($code); self::assertStringStartsWith('', $svg); } } #[Test] public function flagSvgHasFallbackForUnknownLocale(): void { $svg = LocaleSwitcher::flagSvg('xx'); self::assertStringStartsWith('', $svg); } #[Test] public function ariaLabelUsesCurrentLocaleName(): void { $htmlDe = (new LocaleSwitcher('de', '/'))->render(); $htmlEn = (new LocaleSwitcher('en', '/'))->render(); self::assertStringContainsString('aria-label="Sprache wählen"', $htmlDe); self::assertStringContainsString('aria-label="Choose language"', $htmlEn); } }