test_modules.cpp revision 11986:c12e4625ab56 
1/*
2    tests/test_modules.cpp -- nested modules, importing modules, and
3                            internal references
4
5    Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch>
6
7    All rights reserved. Use of this source code is governed by a
8    BSD-style license that can be found in the LICENSE file.
9*/
10
11#include "pybind11_tests.h"
12#include "constructor_stats.h"
13
14std::string submodule_func() {
15    return "submodule_func()";
16}
17
18class A {
19public:
20    A(int v) : v(v) { print_created(this, v); }
21    ~A() { print_destroyed(this); }
22    A(const A&) { print_copy_created(this); }
23    A& operator=(const A &copy) { print_copy_assigned(this); v = copy.v; return *this; }
24    std::string toString() { return "A[" + std::to_string(v) + "]"; }
25private:
26    int v;
27};
28
29class B {
30public:
31    B() { print_default_created(this); }
32    ~B() { print_destroyed(this); }
33    B(const B&) { print_copy_created(this); }
34    B& operator=(const B &copy) { print_copy_assigned(this); a1 = copy.a1; a2 = copy.a2; return *this; }
35    A &get_a1() { return a1; }
36    A &get_a2() { return a2; }
37
38    A a1{1};
39    A a2{2};
40};
41
42test_initializer modules([](py::module &m) {
43    py::module m_sub = m.def_submodule("submodule");
44    m_sub.def("submodule_func", &submodule_func);
45
46    py::class_<A>(m_sub, "A")
47        .def(py::init<int>())
48        .def("__repr__", &A::toString);
49
50    py::class_<B>(m_sub, "B")
51        .def(py::init<>())
52        .def("get_a1", &B::get_a1, "Return the internal A 1", py::return_value_policy::reference_internal)
53        .def("get_a2", &B::get_a2, "Return the internal A 2", py::return_value_policy::reference_internal)
54        .def_readwrite("a1", &B::a1)  // def_readonly uses an internal reference return policy by default
55        .def_readwrite("a2", &B::a2);
56
57    m.attr("OD") = py::module::import("collections").attr("OrderedDict");
58});
59