From 444e535f000fd7b53dadf6726d5cd29ac34cc75f Mon Sep 17 00:00:00 2001 From: Miodrag Milanovic Date: Thu, 23 Jul 2020 08:58:19 +0200 Subject: Add pybind11 2.5 source --- 3rdparty/pybind11/tests/test_class.cpp | 422 +++++++++++++++++++++++++++++++++ 1 file changed, 422 insertions(+) create mode 100644 3rdparty/pybind11/tests/test_class.cpp (limited to '3rdparty/pybind11/tests/test_class.cpp') diff --git a/3rdparty/pybind11/tests/test_class.cpp b/3rdparty/pybind11/tests/test_class.cpp new file mode 100644 index 00000000..499d0cc5 --- /dev/null +++ b/3rdparty/pybind11/tests/test_class.cpp @@ -0,0 +1,422 @@ +/* + tests/test_class.cpp -- test py::class_ definitions and basic functionality + + Copyright (c) 2016 Wenzel Jakob + + All rights reserved. Use of this source code is governed by a + BSD-style license that can be found in the LICENSE file. +*/ + +#include "pybind11_tests.h" +#include "constructor_stats.h" +#include "local_bindings.h" +#include + +#if defined(_MSC_VER) +# pragma warning(disable: 4324) // warning C4324: structure was padded due to alignment specifier +#endif + +// test_brace_initialization +struct NoBraceInitialization { + NoBraceInitialization(std::vector v) : vec{std::move(v)} {} + template + NoBraceInitialization(std::initializer_list l) : vec(l) {} + + std::vector vec; +}; + +TEST_SUBMODULE(class_, m) { + // test_instance + struct NoConstructor { + NoConstructor() = default; + NoConstructor(const NoConstructor &) = default; + NoConstructor(NoConstructor &&) = default; + static NoConstructor *new_instance() { + auto *ptr = new NoConstructor(); + print_created(ptr, "via new_instance"); + return ptr; + } + ~NoConstructor() { print_destroyed(this); } + }; + + py::class_(m, "NoConstructor") + .def_static("new_instance", &NoConstructor::new_instance, "Return an instance"); + + // test_inheritance + class Pet { + public: + Pet(const std::string &name, const std::string &species) + : m_name(name), m_species(species) {} + std::string name() const { return m_name; } + std::string species() const { return m_species; } + private: + std::string m_name; + std::string m_species; + }; + + class Dog : public Pet { + public: + Dog(const std::string &name) : Pet(name, "dog") {} + std::string bark() const { return "Woof!"; } + }; + + class Rabbit : public Pet { + public: + Rabbit(const std::string &name) : Pet(name, "parrot") {} + }; + + class Hamster : public Pet { + public: + Hamster(const std::string &name) : Pet(name, "rodent") {} + }; + + class Chimera : public Pet { + Chimera() : Pet("Kimmy", "chimera") {} + }; + + py::class_ pet_class(m, "Pet"); + pet_class + .def(py::init()) + .def("name", &Pet::name) + .def("species", &Pet::species); + + /* One way of declaring a subclass relationship: reference parent's class_ object */ + py::class_(m, "Dog", pet_class) + .def(py::init()); + + /* Another way of declaring a subclass relationship: reference parent's C++ type */ + py::class_(m, "Rabbit") + .def(py::init()); + + /* And another: list parent in class template arguments */ + py::class_(m, "Hamster") + .def(py::init()); + + /* Constructors are not inherited by default */ + py::class_(m, "Chimera"); + + m.def("pet_name_species", [](const Pet &pet) { return pet.name() + " is a " + pet.species(); }); + m.def("dog_bark", [](const Dog &dog) { return dog.bark(); }); + + // test_automatic_upcasting + struct BaseClass { + BaseClass() = default; + BaseClass(const BaseClass &) = default; + BaseClass(BaseClass &&) = default; + virtual ~BaseClass() {} + }; + struct DerivedClass1 : BaseClass { }; + struct DerivedClass2 : BaseClass { }; + + py::class_(m, "BaseClass").def(py::init<>()); + py::class_(m, "DerivedClass1").def(py::init<>()); + py::class_(m, "DerivedClass2").def(py::init<>()); + + m.def("return_class_1", []() -> BaseClass* { return new DerivedClass1(); }); + m.def("return_class_2", []() -> BaseClass* { return new DerivedClass2(); }); + m.def("return_class_n", [](int n) -> BaseClass* { + if (n == 1) return new DerivedClass1(); + if (n == 2) return new DerivedClass2(); + return new BaseClass(); + }); + m.def("return_none", []() -> BaseClass* { return nullptr; }); + + // test_isinstance + m.def("check_instances", [](py::list l) { + return py::make_tuple( + py::isinstance(l[0]), + py::isinstance(l[1]), + py::isinstance(l[2]), + py::isinstance(l[3]), + py::isinstance(l[4]), + py::isinstance(l[5]), + py::isinstance(l[6]) + ); + }); + + // test_mismatched_holder + struct MismatchBase1 { }; + struct MismatchDerived1 : MismatchBase1 { }; + + struct MismatchBase2 { }; + struct MismatchDerived2 : MismatchBase2 { }; + + m.def("mismatched_holder_1", []() { + auto mod = py::module::import("__main__"); + py::class_>(mod, "MismatchBase1"); + py::class_(mod, "MismatchDerived1"); + }); + m.def("mismatched_holder_2", []() { + auto mod = py::module::import("__main__"); + py::class_(mod, "MismatchBase2"); + py::class_, + MismatchBase2>(mod, "MismatchDerived2"); + }); + + // test_override_static + // #511: problem with inheritance + overwritten def_static + struct MyBase { + static std::unique_ptr make() { + return std::unique_ptr(new MyBase()); + } + }; + + struct MyDerived : MyBase { + static std::unique_ptr make() { + return std::unique_ptr(new MyDerived()); + } + }; + + py::class_(m, "MyBase") + .def_static("make", &MyBase::make); + + py::class_(m, "MyDerived") + .def_static("make", &MyDerived::make) + .def_static("make2", &MyDerived::make); + + // test_implicit_conversion_life_support + struct ConvertibleFromUserType { + int i; + + ConvertibleFromUserType(UserType u) : i(u.value()) { } + }; + + py::class_(m, "AcceptsUserType") + .def(py::init()); + py::implicitly_convertible(); + + m.def("implicitly_convert_argument", [](const ConvertibleFromUserType &r) { return r.i; }); + m.def("implicitly_convert_variable", [](py::object o) { + // `o` is `UserType` and `r` is a reference to a temporary created by implicit + // conversion. This is valid when called inside a bound function because the temp + // object is attached to the same life support system as the arguments. + const auto &r = o.cast(); + return r.i; + }); + m.add_object("implicitly_convert_variable_fail", [&] { + auto f = [](PyObject *, PyObject *args) -> PyObject * { + auto o = py::reinterpret_borrow(args)[0]; + try { // It should fail here because there is no life support. + o.cast(); + } catch (const py::cast_error &e) { + return py::str(e.what()).release().ptr(); + } + return py::str().release().ptr(); + }; + + auto def = new PyMethodDef{"f", f, METH_VARARGS, nullptr}; + return py::reinterpret_steal(PyCFunction_NewEx(def, nullptr, m.ptr())); + }()); + + // test_operator_new_delete + struct HasOpNewDel { + std::uint64_t i; + static void *operator new(size_t s) { py::print("A new", s); return ::operator new(s); } + static void *operator new(size_t s, void *ptr) { py::print("A placement-new", s); return ptr; } + static void operator delete(void *p) { py::print("A delete"); return ::operator delete(p); } + }; + struct HasOpNewDelSize { + std::uint32_t i; + static void *operator new(size_t s) { py::print("B new", s); return ::operator new(s); } + static void *operator new(size_t s, void *ptr) { py::print("B placement-new", s); return ptr; } + static void operator delete(void *p, size_t s) { py::print("B delete", s); return ::operator delete(p); } + }; + struct AliasedHasOpNewDelSize { + std::uint64_t i; + static void *operator new(size_t s) { py::print("C new", s); return ::operator new(s); } + static void *operator new(size_t s, void *ptr) { py::print("C placement-new", s); return ptr; } + static void operator delete(void *p, size_t s) { py::print("C delete", s); return ::operator delete(p); } + virtual ~AliasedHasOpNewDelSize() = default; + }; + struct PyAliasedHasOpNewDelSize : AliasedHasOpNewDelSize { + PyAliasedHasOpNewDelSize() = default; + PyAliasedHasOpNewDelSize(int) { } + std::uint64_t j; + }; + struct HasOpNewDelBoth { + std::uint32_t i[8]; + static void *operator new(size_t s) { py::print("D new", s); return ::operator new(s); } + static void *operator new(size_t s, void *ptr) { py::print("D placement-new", s); return ptr; } + static void operator delete(void *p) { py::print("D delete"); return ::operator delete(p); } + static void operator delete(void *p, size_t s) { py::print("D wrong delete", s); return ::operator delete(p); } + }; + py::class_(m, "HasOpNewDel").def(py::init<>()); + py::class_(m, "HasOpNewDelSize").def(py::init<>()); + py::class_(m, "HasOpNewDelBoth").def(py::init<>()); + py::class_ aliased(m, "AliasedHasOpNewDelSize"); + aliased.def(py::init<>()); + aliased.attr("size_noalias") = py::int_(sizeof(AliasedHasOpNewDelSize)); + aliased.attr("size_alias") = py::int_(sizeof(PyAliasedHasOpNewDelSize)); + + // This test is actually part of test_local_bindings (test_duplicate_local), but we need a + // definition in a different compilation unit within the same module: + bind_local(m, "LocalExternal", py::module_local()); + + // test_bind_protected_functions + class ProtectedA { + protected: + int foo() const { return value; } + + private: + int value = 42; + }; + + class PublicistA : public ProtectedA { + public: + using ProtectedA::foo; + }; + + py::class_(m, "ProtectedA") + .def(py::init<>()) +#if !defined(_MSC_VER) || _MSC_VER >= 1910 + .def("foo", &PublicistA::foo); +#else + .def("foo", static_cast(&PublicistA::foo)); +#endif + + class ProtectedB { + public: + virtual ~ProtectedB() = default; + + protected: + virtual int foo() const { return value; } + + private: + int value = 42; + }; + + class TrampolineB : public ProtectedB { + public: + int foo() const override { PYBIND11_OVERLOAD(int, ProtectedB, foo, ); } + }; + + class PublicistB : public ProtectedB { + public: + using ProtectedB::foo; + }; + + py::class_(m, "ProtectedB") + .def(py::init<>()) +#if !defined(_MSC_VER) || _MSC_VER >= 1910 + .def("foo", &PublicistB::foo); +#else + .def("foo", static_cast(&PublicistB::foo)); +#endif + + // test_brace_initialization + struct BraceInitialization { + int field1; + std::string field2; + }; + + py::class_(m, "BraceInitialization") + .def(py::init()) + .def_readwrite("field1", &BraceInitialization::field1) + .def_readwrite("field2", &BraceInitialization::field2); + // We *don't* want to construct using braces when the given constructor argument maps to a + // constructor, because brace initialization could go to the wrong place (in particular when + // there is also an `initializer_list`-accept constructor): + py::class_(m, "NoBraceInitialization") + .def(py::init>()) + .def_readonly("vec", &NoBraceInitialization::vec); + + // test_reentrant_implicit_conversion_failure + // #1035: issue with runaway reentrant implicit conversion + struct BogusImplicitConversion { + BogusImplicitConversion(const BogusImplicitConversion &) { } + }; + + py::class_(m, "BogusImplicitConversion") + .def(py::init()); + + py::implicitly_convertible(); + + // test_qualname + // #1166: nested class docstring doesn't show nested name + // Also related: tests that __qualname__ is set properly + struct NestBase {}; + struct Nested {}; + py::class_ base(m, "NestBase"); + base.def(py::init<>()); + py::class_(base, "Nested") + .def(py::init<>()) + .def("fn", [](Nested &, int, NestBase &, Nested &) {}) + .def("fa", [](Nested &, int, NestBase &, Nested &) {}, + "a"_a, "b"_a, "c"_a); + base.def("g", [](NestBase &, Nested &) {}); + base.def("h", []() { return NestBase(); }); + + // test_error_after_conversion + // The second-pass path through dispatcher() previously didn't + // remember which overload was used, and would crash trying to + // generate a useful error message + + struct NotRegistered {}; + struct StringWrapper { std::string str; }; + m.def("test_error_after_conversions", [](int) {}); + m.def("test_error_after_conversions", + [](StringWrapper) -> NotRegistered { return {}; }); + py::class_(m, "StringWrapper").def(py::init()); + py::implicitly_convertible(); + + #if defined(PYBIND11_CPP17) + struct alignas(1024) Aligned { + std::uintptr_t ptr() const { return (uintptr_t) this; } + }; + py::class_(m, "Aligned") + .def(py::init<>()) + .def("ptr", &Aligned::ptr); + #endif +} + +template class BreaksBase { public: virtual ~BreaksBase() = default; }; +template class BreaksTramp : public BreaksBase {}; +// These should all compile just fine: +typedef py::class_, std::unique_ptr>, BreaksTramp<1>> DoesntBreak1; +typedef py::class_, BreaksTramp<2>, std::unique_ptr>> DoesntBreak2; +typedef py::class_, std::unique_ptr>> DoesntBreak3; +typedef py::class_, BreaksTramp<4>> DoesntBreak4; +typedef py::class_> DoesntBreak5; +typedef py::class_, std::shared_ptr>, BreaksTramp<6>> DoesntBreak6; +typedef py::class_, BreaksTramp<7>, std::shared_ptr>> DoesntBreak7; +typedef py::class_, std::shared_ptr>> DoesntBreak8; +#define CHECK_BASE(N) static_assert(std::is_same>::value, \ + "DoesntBreak" #N " has wrong type!") +CHECK_BASE(1); CHECK_BASE(2); CHECK_BASE(3); CHECK_BASE(4); CHECK_BASE(5); CHECK_BASE(6); CHECK_BASE(7); CHECK_BASE(8); +#define CHECK_ALIAS(N) static_assert(DoesntBreak##N::has_alias && std::is_same>::value, \ + "DoesntBreak" #N " has wrong type_alias!") +#define CHECK_NOALIAS(N) static_assert(!DoesntBreak##N::has_alias && std::is_void::value, \ + "DoesntBreak" #N " has type alias, but shouldn't!") +CHECK_ALIAS(1); CHECK_ALIAS(2); CHECK_NOALIAS(3); CHECK_ALIAS(4); CHECK_NOALIAS(5); CHECK_ALIAS(6); CHECK_ALIAS(7); CHECK_NOALIAS(8); +#define CHECK_HOLDER(N, TYPE) static_assert(std::is_same>>::value, \ + "DoesntBreak" #N " has wrong holder_type!") +CHECK_HOLDER(1, unique); CHECK_HOLDER(2, unique); CHECK_HOLDER(3, unique); CHECK_HOLDER(4, unique); CHECK_HOLDER(5, unique); +CHECK_HOLDER(6, shared); CHECK_HOLDER(7, shared); CHECK_HOLDER(8, shared); + +// There's no nice way to test that these fail because they fail to compile; leave them here, +// though, so that they can be manually tested by uncommenting them (and seeing that compilation +// failures occurs). + +// We have to actually look into the type: the typedef alone isn't enough to instantiate the type: +#define CHECK_BROKEN(N) static_assert(std::is_same>::value, \ + "Breaks1 has wrong type!"); + +//// Two holder classes: +//typedef py::class_, std::unique_ptr>, std::unique_ptr>> Breaks1; +//CHECK_BROKEN(1); +//// Two aliases: +//typedef py::class_, BreaksTramp<-2>, BreaksTramp<-2>> Breaks2; +//CHECK_BROKEN(2); +//// Holder + 2 aliases +//typedef py::class_, std::unique_ptr>, BreaksTramp<-3>, BreaksTramp<-3>> Breaks3; +//CHECK_BROKEN(3); +//// Alias + 2 holders +//typedef py::class_, std::unique_ptr>, BreaksTramp<-4>, std::shared_ptr>> Breaks4; +//CHECK_BROKEN(4); +//// Invalid option (not a subclass or holder) +//typedef py::class_, BreaksTramp<-4>> Breaks5; +//CHECK_BROKEN(5); +//// Invalid option: multiple inheritance not supported: +//template <> struct BreaksBase<-8> : BreaksBase<-6>, BreaksBase<-7> {}; +//typedef py::class_, BreaksBase<-6>, BreaksBase<-7>> Breaks8; +//CHECK_BROKEN(8); -- cgit v1.2.3