dropdown, * - 4 menu items, one per supported locale, * - the active locale is marked aria-current="true" and is a , * - inactive locales are links to /locale?set=...&return=..., * - the trigger and every menu item contain a flag SVG, * - the rendered label is in the current locale's language. */ final class LocaleSwitcherTest extends TestCase { #[Test] public function rendersSingleDropdownForAllSupportedLocales(): void { $html = (new LocaleSwitcher('en', '/'))->render(); // exactly one

(no -mobile suffix, no desktop

) self::assertStringContainsString('
', $html); self::assertStringNotContainsString('locale-switcher-mobile', $html); self::assertStringNotContainsString('
. 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", ); } // 1 flag in trigger + 4 flags in menu = 5 total self::assertSame(5, substr_count($html, 'class="flag"'), 'expected 5 flag SVGs (1 trigger + 4 menu)'); } #[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', 'de.svg'], 'EN en-GB' => ['en', 'gb.svg'], 'UK Ukraine' => ['uk', 'ua.svg'], 'RU Russia' => ['ru', 'ru.svg'], ]; } #[Test] public function flagImgReturnsValidImgForEverySupportedLocale(): void { foreach (Locale::SUPPORTED as $code) { $img = LocaleSwitcher::flagImg($code); self::assertStringStartsWith('', $img); } } #[Test] public function flagImgHasFallbackForUnknownLocale(): void { $img = LocaleSwitcher::flagImg('xx'); self::assertStringStartsWith('render(); $htmlEn = (new LocaleSwitcher('en', '/'))->render(); self::assertStringContainsString('aria-label="Sprache wählen"', $htmlDe); self::assertStringContainsString('aria-label="Choose language"', $htmlEn); } #[Test] public function triggerContainsCurrentLocaleFlag(): void { // The closed dropdown shows the current locale's flag in the trigger $html = (new LocaleSwitcher('de', '/'))->render(); // The first in the document is the trigger and it // must point at the German flag asset under /img/flags/. $deFlag = LocaleSwitcher::flagImg('de'); $pos = strpos($html, $deFlag); self::assertNotFalse($pos, 'expected German flag in the trigger (first in document)'); self::assertStringContainsString('src="/img/flags/de.svg"', $deFlag); } }