diff --git a/packages/coding-standard/tests/Fixer/Spacing/StandaloneLinePromotedPropertyFixer/Fixture/readonly_promoted_properties.php.inc b/packages/coding-standard/tests/Fixer/Spacing/StandaloneLinePromotedPropertyFixer/Fixture/readonly_promoted_properties.php.inc
new file mode 100644
index 0000000000..72ff23736e
--- /dev/null
+++ b/packages/coding-standard/tests/Fixer/Spacing/StandaloneLinePromotedPropertyFixer/Fixture/readonly_promoted_properties.php.inc
@@ -0,0 +1,29 @@
+<?php
+
+namespace Symplify\CodingStandard\Tests\Fixer\Spacing\StandaloneLinePromotedPropertyFixer\Fixture;
+
+final class ReadonlyPromotedProperties
+{
+    public function __construct(private readonly EntityManager $entityManager, private readonly SchedulerPlanner $schedulerPlanner, private readonly SchedulerRepository $schedulerRepository)
+    {
+    }
+}
+
+?>
+-----
+<?php
+
+namespace Symplify\CodingStandard\Tests\Fixer\Spacing\StandaloneLinePromotedPropertyFixer\Fixture;
+
+final class ReadonlyPromotedProperties
+{
+    public function __construct(
+        private readonly EntityManager $entityManager,
+        private readonly SchedulerPlanner $schedulerPlanner,
+        private readonly SchedulerRepository $schedulerRepository
+    )
+    {
+    }
+}
+
+?>