diff --git a/tests/test_classh_wip.cpp b/tests/test_classh_wip.cpp
index e0652c038..5c9fcdb9d 100644
--- a/tests/test_classh_wip.cpp
+++ b/tests/test_classh_wip.cpp
@@ -190,8 +190,9 @@ struct type_caster<mpty> : smart_holder_type_caster_load<mpty> {
     // type_caster_base END
 
     // Originally type_caster_generic::cast.
-    // clang-format off
-    PYBIND11_NOINLINE static handle cast(const void *_src, return_value_policy policy, handle parent,
+    PYBIND11_NOINLINE static handle cast(const void *_src,
+                                         return_value_policy policy,
+                                         handle parent,
                                          const detail::type_info *tinfo,
                                          void *(*copy_constructor)(const void *),
                                          void *(*move_constructor)(const void *),
@@ -211,21 +212,21 @@ struct type_caster<mpty> : smart_holder_type_caster_load<mpty> {
             }
         }
 
-        auto inst = reinterpret_steal<object>(make_new_instance(tinfo->type));
-        auto wrapper = reinterpret_cast<instance *>(inst.ptr());
-        wrapper->owned = false;
+        auto inst       = reinterpret_steal<object>(make_new_instance(tinfo->type));
+        auto wrapper    = reinterpret_cast<instance *>(inst.ptr());
+        wrapper->owned  = false;
         void *&valueptr = values_and_holders(wrapper).begin()->value_ptr();
 
         switch (policy) {
             case return_value_policy::automatic:
             case return_value_policy::take_ownership:
-                valueptr = src;
+                valueptr       = src;
                 wrapper->owned = true;
                 break;
 
             case return_value_policy::automatic_reference:
             case return_value_policy::reference:
-                valueptr = src;
+                valueptr       = src;
                 wrapper->owned = false;
                 break;
 
@@ -239,8 +240,8 @@ struct type_caster<mpty> : smart_holder_type_caster_load<mpty> {
 #else
                     std::string type_name(tinfo->cpptype->name());
                     detail::clean_type_id(type_name);
-                    throw cast_error("return_value_policy = copy, but type " +
-                                     type_name + " is non-copyable!");
+                    throw cast_error("return_value_policy = copy, but type " + type_name
+                                     + " is non-copyable!");
 #endif
                 }
                 wrapper->owned = true;
@@ -259,15 +260,15 @@ struct type_caster<mpty> : smart_holder_type_caster_load<mpty> {
 #else
                     std::string type_name(tinfo->cpptype->name());
                     detail::clean_type_id(type_name);
-                    throw cast_error("return_value_policy = move, but type " +
-                                     type_name + " is neither movable nor copyable!");
+                    throw cast_error("return_value_policy = move, but type " + type_name
+                                     + " is neither movable nor copyable!");
 #endif
                 }
                 wrapper->owned = true;
                 break;
 
             case return_value_policy::reference_internal:
-                valueptr = src;
+                valueptr       = src;
                 wrapper->owned = false;
                 keep_alive_impl(inst, parent);
                 break;
@@ -280,7 +281,6 @@ struct type_caster<mpty> : smart_holder_type_caster_load<mpty> {
 
         return inst.release();
     }
-    // clang-format on
 };
 
 template <>