wip: finalize implementation

src/Twig/AppRuntime.php

@@ -15,6 +15,7 @@ class AppRuntime implements RuntimeExtensionInterface
         private readonly IntlExtension $intlExtension,
         private readonly CountryDataProvider $countryDataProvider,
         private readonly ParticipantEligibilityService $participantEligibilityService,
+        private readonly string $environment,
     ) {
     }
 
@@ -101,4 +102,25 @@ class AppRuntime implements RuntimeExtensionInterface
     {
         return $this->participantEligibilityService->isParticipantEligible($bookingDto, $participantIndex);
     }
+
+    /**
+     * Renders a QA attribute for testing purposes.
+     *
+     * @param string      $label The label for the QA attribute
+     * @param string|null $value The value for the QA attribute
+     *
+     * @return string The rendered QA attribute
+     */
+    public function renderQaAttribute(string $label, ?string $value = null): string
+    {
+        if ('prod' === $this->environment) {
+            return '';
+        }
+
+        if (null === $value) {
+            return sprintf(' data-qa-%s', strtolower($label));
+        }
+
+        return sprintf(' data-qa-%s="%s"', strtolower($label), $value);
+    }
 }