Backport non-functional test_class_sh_*.cpp changes from PR #5213: 1. To avoid compiler warnings for unused code in the unnamed namespace. 2. To avoid clang-format changes. (#5258)

tests/test_class_sh_shared_ptr_copy_move.cpp

@@ -50,6 +50,7 @@ PYBIND11_SMART_HOLDER_TYPE_CASTERS(pybind11_tests::FooSmHld)
 namespace pybind11_tests {
 
 TEST_SUBMODULE(class_sh_shared_ptr_copy_move, m) {
+#if true // Trick to avoid clang-format changes, in support of PR #5213.
     namespace py = pybind11;
 
     py::class_<FooShPtr, std::shared_ptr<FooShPtr>>(m, "FooShPtr")
@@ -107,6 +108,7 @@ TEST_SUBMODULE(class_sh_shared_ptr_copy_move, m) {
         l.append(std::move(o));
         return l;
     });
+#endif
 }
 
 } // namespace pybind11_tests

tests/test_class_sh_trampoline_basic.cpp

@@ -76,11 +76,12 @@ void wrap(py::module_ m, const char *py_class_name) {
 } // namespace class_sh_trampoline_basic
 } // namespace pybind11_tests
 
-PYBIND11_SMART_HOLDER_TYPE_CASTERS(pybind11_tests::class_sh_trampoline_basic::Abase<0>)
-PYBIND11_SMART_HOLDER_TYPE_CASTERS(pybind11_tests::class_sh_trampoline_basic::Abase<1>)
+using namespace pybind11_tests::class_sh_trampoline_basic;
+
+PYBIND11_SMART_HOLDER_TYPE_CASTERS(Abase<0>)
+PYBIND11_SMART_HOLDER_TYPE_CASTERS(Abase<1>)
 
 TEST_SUBMODULE(class_sh_trampoline_basic, m) {
-    using namespace pybind11_tests::class_sh_trampoline_basic;
     wrap<0>(m, "Abase0");
     wrap<1>(m, "Abase1");
 }

tests/test_class_sh_trampoline_self_life_support.cpp

@@ -10,7 +10,8 @@
 #include <string>
 #include <utility>
 
-namespace {
+namespace pybind11_tests {
+namespace class_sh_trampoline_self_life_support {
 
 struct Big5 { // Also known as "rule of five".
     std::string history;
@@ -41,7 +42,10 @@ struct Big5Trampoline : Big5, py::trampoline_self_life_support {
     using Big5::Big5;
 };
 
-} // namespace
+} // namespace class_sh_trampoline_self_life_support
+} // namespace pybind11_tests
+
+using namespace pybind11_tests::class_sh_trampoline_self_life_support;
 
 PYBIND11_SMART_HOLDER_TYPE_CASTERS(Big5)
 

tests/test_class_sh_trampoline_shared_from_this.cpp

@@ -8,7 +8,8 @@
 #include <memory>
 #include <string>
 
-namespace {
+namespace pybind11_tests {
+namespace class_sh_trampoline_shared_from_this {
 
 struct Sft : std::enable_shared_from_this<Sft> {
     std::string history;
@@ -98,7 +99,10 @@ std::shared_ptr<Sft> make_pure_cpp_sft_shd_ptr(const std::string &history_seed)
 
 std::shared_ptr<Sft> pass_through_shd_ptr(const std::shared_ptr<Sft> &obj) { return obj; }
 
-} // namespace
+} // namespace class_sh_trampoline_shared_from_this
+} // namespace pybind11_tests
+
+using namespace pybind11_tests::class_sh_trampoline_shared_from_this;
 
 PYBIND11_SMART_HOLDER_TYPE_CASTERS(Sft)
 PYBIND11_SMART_HOLDER_TYPE_CASTERS(SftSharedPtrStash)

tests/test_class_sh_trampoline_shared_ptr_cpp_arg.cpp

@@ -7,7 +7,8 @@
 
 #include <utility>
 
-namespace {
+namespace pybind11_tests {
+namespace class_sh_trampoline_shared_ptr_cpp_arg {
 
 // For testing whether a python subclass of a C++ object dies when the
 // last python reference is lost
@@ -51,7 +52,10 @@ struct SpGoAwayTester {
     std::shared_ptr<SpGoAway> m_obj;
 };
 
-} // namespace
+} // namespace class_sh_trampoline_shared_ptr_cpp_arg
+} // namespace pybind11_tests
+
+using namespace pybind11_tests::class_sh_trampoline_shared_ptr_cpp_arg;
 
 PYBIND11_SMART_HOLDER_TYPE_CASTERS(SpBase)
 PYBIND11_SMART_HOLDER_TYPE_CASTERS(SpBaseTester)

tests/test_class_sh_trampoline_unique_ptr.cpp

@@ -8,7 +8,8 @@
 
 #include <cstdint>
 
-namespace {
+namespace pybind11_tests {
+namespace class_sh_trampoline_unique_ptr {
 
 class Class {
 public:
@@ -30,11 +31,13 @@ private:
     std::uint64_t val_ = 0;
 };
 
-} // namespace
+} // namespace class_sh_trampoline_unique_ptr
+} // namespace pybind11_tests
 
-PYBIND11_SMART_HOLDER_TYPE_CASTERS(Class)
+PYBIND11_SMART_HOLDER_TYPE_CASTERS(pybind11_tests::class_sh_trampoline_unique_ptr::Class)
 
-namespace {
+namespace pybind11_tests {
+namespace class_sh_trampoline_unique_ptr {
 
 class PyClass : public Class, public py::trampoline_self_life_support {
 public:
@@ -45,9 +48,12 @@ public:
     int foo() const override { PYBIND11_OVERRIDE_PURE(int, Class, foo); }
 };
 
-} // namespace
+} // namespace class_sh_trampoline_unique_ptr
+} // namespace pybind11_tests
 
 TEST_SUBMODULE(class_sh_trampoline_unique_ptr, m) {
+    using namespace pybind11_tests::class_sh_trampoline_unique_ptr;
+
     py::classh<Class, PyClass>(m, "Class")
         .def(py::init<>())
         .def("set_val", &Class::setVal)

tests/test_class_sh_virtual_py_cpp_mix.cpp

@@ -46,13 +46,13 @@ struct CppDerivedVirtualOverrider : CppDerived, py::trampoline_self_life_support
 } // namespace class_sh_virtual_py_cpp_mix
 } // namespace pybind11_tests
 
-PYBIND11_SMART_HOLDER_TYPE_CASTERS(pybind11_tests::class_sh_virtual_py_cpp_mix::Base)
-PYBIND11_SMART_HOLDER_TYPE_CASTERS(pybind11_tests::class_sh_virtual_py_cpp_mix::CppDerivedPlain)
-PYBIND11_SMART_HOLDER_TYPE_CASTERS(pybind11_tests::class_sh_virtual_py_cpp_mix::CppDerived)
-
-TEST_SUBMODULE(class_sh_virtual_py_cpp_mix, m) {
 using namespace pybind11_tests::class_sh_virtual_py_cpp_mix;
 
+PYBIND11_SMART_HOLDER_TYPE_CASTERS(Base)
+PYBIND11_SMART_HOLDER_TYPE_CASTERS(CppDerivedPlain)
+PYBIND11_SMART_HOLDER_TYPE_CASTERS(CppDerived)
+
+TEST_SUBMODULE(class_sh_virtual_py_cpp_mix, m) {
     py::classh<Base, BaseVirtualOverrider>(m, "Base").def(py::init<>()).def("get", &Base::get);
 
     py::classh<CppDerivedPlain, Base>(m, "CppDerivedPlain").def(py::init<>());