[Autocomplete] Improve test

Author: J-Ben87

src/Autocomplete/tests/Fixtures/Autocompleter/CustomAttributesProductAutocompleter.php

@@ -8,6 +8,10 @@ class CustomAttributesProductAutocompleter extends CustomProductAutocompleter
 {
     public function getAttributes(object $entity): array
     {
-        return ['disabled' => true];
+        return [
+            'disabled' => true,
+            'value' => 'This value should be replaced with the result of getValue()',
+            'text' => 'This value should be replaced with the result of getText()',
+        ];
     }
 }