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_stl.cpp | 284 +++++++++++++++++++++++++++++++++++ 1 file changed, 284 insertions(+) create mode 100644 3rdparty/pybind11/tests/test_stl.cpp (limited to '3rdparty/pybind11/tests/test_stl.cpp') diff --git a/3rdparty/pybind11/tests/test_stl.cpp b/3rdparty/pybind11/tests/test_stl.cpp new file mode 100644 index 00000000..207c9fb2 --- /dev/null +++ b/3rdparty/pybind11/tests/test_stl.cpp @@ -0,0 +1,284 @@ +/* + tests/test_stl.cpp -- STL type casters + + Copyright (c) 2017 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 + +#include +#include + +// Test with `std::variant` in C++17 mode, or with `boost::variant` in C++11/14 +#if PYBIND11_HAS_VARIANT +using std::variant; +#elif defined(PYBIND11_TEST_BOOST) && (!defined(_MSC_VER) || _MSC_VER >= 1910) +# include +# define PYBIND11_HAS_VARIANT 1 +using boost::variant; + +namespace pybind11 { namespace detail { +template +struct type_caster> : variant_caster> {}; + +template <> +struct visit_helper { + template + static auto call(Args &&...args) -> decltype(boost::apply_visitor(args...)) { + return boost::apply_visitor(args...); + } +}; +}} // namespace pybind11::detail +#endif + +PYBIND11_MAKE_OPAQUE(std::vector>); + +/// Issue #528: templated constructor +struct TplCtorClass { + template TplCtorClass(const T &) { } + bool operator==(const TplCtorClass &) const { return true; } +}; + +namespace std { + template <> + struct hash { size_t operator()(const TplCtorClass &) const { return 0; } }; +} + + +TEST_SUBMODULE(stl, m) { + // test_vector + m.def("cast_vector", []() { return std::vector{1}; }); + m.def("load_vector", [](const std::vector &v) { return v.at(0) == 1 && v.at(1) == 2; }); + // `std::vector` is special because it returns proxy objects instead of references + m.def("cast_bool_vector", []() { return std::vector{true, false}; }); + m.def("load_bool_vector", [](const std::vector &v) { + return v.at(0) == true && v.at(1) == false; + }); + // Unnumbered regression (caused by #936): pointers to stl containers aren't castable + static std::vector lvv{2}; + m.def("cast_ptr_vector", []() { return &lvv; }); + + // test_deque + m.def("cast_deque", []() { return std::deque{1}; }); + m.def("load_deque", [](const std::deque &v) { return v.at(0) == 1 && v.at(1) == 2; }); + + // test_array + m.def("cast_array", []() { return std::array {{1 , 2}}; }); + m.def("load_array", [](const std::array &a) { return a[0] == 1 && a[1] == 2; }); + + // test_valarray + m.def("cast_valarray", []() { return std::valarray{1, 4, 9}; }); + m.def("load_valarray", [](const std::valarray& v) { + return v.size() == 3 && v[0] == 1 && v[1] == 4 && v[2] == 9; + }); + + // test_map + m.def("cast_map", []() { return std::map{{"key", "value"}}; }); + m.def("load_map", [](const std::map &map) { + return map.at("key") == "value" && map.at("key2") == "value2"; + }); + + // test_set + m.def("cast_set", []() { return std::set{"key1", "key2"}; }); + m.def("load_set", [](const std::set &set) { + return set.count("key1") && set.count("key2") && set.count("key3"); + }); + + // test_recursive_casting + m.def("cast_rv_vector", []() { return std::vector{2}; }); + m.def("cast_rv_array", []() { return std::array(); }); + // NB: map and set keys are `const`, so while we technically do move them (as `const Type &&`), + // casters don't typically do anything with that, which means they fall to the `const Type &` + // caster. + m.def("cast_rv_map", []() { return std::unordered_map{{"a", RValueCaster{}}}; }); + m.def("cast_rv_nested", []() { + std::vector>, 2>> v; + v.emplace_back(); // add an array + v.back()[0].emplace_back(); // add a map to the array + v.back()[0].back().emplace("b", RValueCaster{}); + v.back()[0].back().emplace("c", RValueCaster{}); + v.back()[1].emplace_back(); // add a map to the array + v.back()[1].back().emplace("a", RValueCaster{}); + return v; + }); + static std::array lva; + static std::unordered_map lvm{{"a", RValueCaster{}}, {"b", RValueCaster{}}}; + static std::unordered_map>>> lvn; + lvn["a"].emplace_back(); // add a list + lvn["a"].back().emplace_back(); // add an array + lvn["a"].emplace_back(); // another list + lvn["a"].back().emplace_back(); // add an array + lvn["b"].emplace_back(); // add a list + lvn["b"].back().emplace_back(); // add an array + lvn["b"].back().emplace_back(); // add another array + m.def("cast_lv_vector", []() -> const decltype(lvv) & { return lvv; }); + m.def("cast_lv_array", []() -> const decltype(lva) & { return lva; }); + m.def("cast_lv_map", []() -> const decltype(lvm) & { return lvm; }); + m.def("cast_lv_nested", []() -> const decltype(lvn) & { return lvn; }); + // #853: + m.def("cast_unique_ptr_vector", []() { + std::vector> v; + v.emplace_back(new UserType{7}); + v.emplace_back(new UserType{42}); + return v; + }); + + // test_move_out_container + struct MoveOutContainer { + struct Value { int value; }; + std::list move_list() const { return {{0}, {1}, {2}}; } + }; + py::class_(m, "MoveOutContainerValue") + .def_readonly("value", &MoveOutContainer::Value::value); + py::class_(m, "MoveOutContainer") + .def(py::init<>()) + .def_property_readonly("move_list", &MoveOutContainer::move_list); + + // Class that can be move- and copy-constructed, but not assigned + struct NoAssign { + int value; + + explicit NoAssign(int value = 0) : value(value) { } + NoAssign(const NoAssign &) = default; + NoAssign(NoAssign &&) = default; + + NoAssign &operator=(const NoAssign &) = delete; + NoAssign &operator=(NoAssign &&) = delete; + }; + py::class_(m, "NoAssign", "Class with no C++ assignment operators") + .def(py::init<>()) + .def(py::init()); + +#ifdef PYBIND11_HAS_OPTIONAL + // test_optional + m.attr("has_optional") = true; + + using opt_int = std::optional; + using opt_no_assign = std::optional; + m.def("double_or_zero", [](const opt_int& x) -> int { + return x.value_or(0) * 2; + }); + m.def("half_or_none", [](int x) -> opt_int { + return x ? opt_int(x / 2) : opt_int(); + }); + m.def("test_nullopt", [](opt_int x) { + return x.value_or(42); + }, py::arg_v("x", std::nullopt, "None")); + m.def("test_no_assign", [](const opt_no_assign &x) { + return x ? x->value : 42; + }, py::arg_v("x", std::nullopt, "None")); + + m.def("nodefer_none_optional", [](std::optional) { return true; }); + m.def("nodefer_none_optional", [](py::none) { return false; }); +#endif + +#ifdef PYBIND11_HAS_EXP_OPTIONAL + // test_exp_optional + m.attr("has_exp_optional") = true; + + using exp_opt_int = std::experimental::optional; + using exp_opt_no_assign = std::experimental::optional; + m.def("double_or_zero_exp", [](const exp_opt_int& x) -> int { + return x.value_or(0) * 2; + }); + m.def("half_or_none_exp", [](int x) -> exp_opt_int { + return x ? exp_opt_int(x / 2) : exp_opt_int(); + }); + m.def("test_nullopt_exp", [](exp_opt_int x) { + return x.value_or(42); + }, py::arg_v("x", std::experimental::nullopt, "None")); + m.def("test_no_assign_exp", [](const exp_opt_no_assign &x) { + return x ? x->value : 42; + }, py::arg_v("x", std::experimental::nullopt, "None")); +#endif + +#ifdef PYBIND11_HAS_VARIANT + static_assert(std::is_same::value, + "visitor::result_type is required by boost::variant in C++11 mode"); + + struct visitor { + using result_type = const char *; + + result_type operator()(int) { return "int"; } + result_type operator()(std::string) { return "std::string"; } + result_type operator()(double) { return "double"; } + result_type operator()(std::nullptr_t) { return "std::nullptr_t"; } + }; + + // test_variant + m.def("load_variant", [](variant v) { + return py::detail::visit_helper::call(visitor(), v); + }); + m.def("load_variant_2pass", [](variant v) { + return py::detail::visit_helper::call(visitor(), v); + }); + m.def("cast_variant", []() { + using V = variant; + return py::make_tuple(V(5), V("Hello")); + }); +#endif + + // #528: templated constructor + // (no python tests: the test here is that this compiles) + m.def("tpl_ctor_vector", [](std::vector &) {}); + m.def("tpl_ctor_map", [](std::unordered_map &) {}); + m.def("tpl_ctor_set", [](std::unordered_set &) {}); +#if defined(PYBIND11_HAS_OPTIONAL) + m.def("tpl_constr_optional", [](std::optional &) {}); +#elif defined(PYBIND11_HAS_EXP_OPTIONAL) + m.def("tpl_constr_optional", [](std::experimental::optional &) {}); +#endif + + // test_vec_of_reference_wrapper + // #171: Can't return STL structures containing reference wrapper + m.def("return_vec_of_reference_wrapper", [](std::reference_wrapper p4) { + static UserType p1{1}, p2{2}, p3{3}; + return std::vector> { + std::ref(p1), std::ref(p2), std::ref(p3), p4 + }; + }); + + // test_stl_pass_by_pointer + m.def("stl_pass_by_pointer", [](std::vector* v) { return *v; }, "v"_a=nullptr); + + // #1258: pybind11/stl.h converts string to vector + m.def("func_with_string_or_vector_string_arg_overload", [](std::vector) { return 1; }); + m.def("func_with_string_or_vector_string_arg_overload", [](std::list) { return 2; }); + m.def("func_with_string_or_vector_string_arg_overload", [](std::string) { return 3; }); + + class Placeholder { + public: + Placeholder() { print_created(this); } + Placeholder(const Placeholder &) = delete; + ~Placeholder() { print_destroyed(this); } + }; + py::class_(m, "Placeholder"); + + /// test_stl_vector_ownership + m.def("test_stl_ownership", + []() { + std::vector result; + result.push_back(new Placeholder()); + return result; + }, + py::return_value_policy::take_ownership); + + m.def("array_cast_sequence", [](std::array x) { return x; }); + + /// test_issue_1561 + struct Issue1561Inner { std::string data; }; + struct Issue1561Outer { std::vector list; }; + + py::class_(m, "Issue1561Inner") + .def(py::init()) + .def_readwrite("data", &Issue1561Inner::data); + + py::class_(m, "Issue1561Outer") + .def(py::init<>()) + .def_readwrite("list", &Issue1561Outer::list); +} -- cgit v1.2.3