test_modules.cpp revision 12391 
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
14TEST_SUBMODULE(modules, m) {
15    // test_nested_modules
16    py::module m_sub = m.def_submodule("subsubmodule");
17    m_sub.def("submodule_func", []() { return "submodule_func()"; });
18
19    // test_reference_internal
20    class A {
21    public:
22        A(int v) : v(v) { print_created(this, v); }
23        ~A() { print_destroyed(this); }
24        A(const A&) { print_copy_created(this); }
25        A& operator=(const A &copy) { print_copy_assigned(this); v = copy.v; return *this; }
26        std::string toString() { return "A[" + std::to_string(v) + "]"; }
27    private:
28        int v;
29    };
30    py::class_<A>(m_sub, "A")
31        .def(py::init<int>())
32        .def("__repr__", &A::toString);
33
34    class B {
35    public:
36        B() { print_default_created(this); }
37        ~B() { print_destroyed(this); }
38        B(const B&) { print_copy_created(this); }
39        B& operator=(const B &copy) { print_copy_assigned(this); a1 = copy.a1; a2 = copy.a2; return *this; }
40        A &get_a1() { return a1; }
41        A &get_a2() { return a2; }
42
43        A a1{1};
44        A a2{2};
45    };
46    py::class_<B>(m_sub, "B")
47        .def(py::init<>())
48        .def("get_a1", &B::get_a1, "Return the internal A 1", py::return_value_policy::reference_internal)
49        .def("get_a2", &B::get_a2, "Return the internal A 2", py::return_value_policy::reference_internal)
50        .def_readwrite("a1", &B::a1)  // def_readonly uses an internal reference return policy by default
51        .def_readwrite("a2", &B::a2);
52
53    m.attr("OD") = py::module::import("collections").attr("OrderedDict");
54
55    // test_duplicate_registration
56    // Registering two things with the same name
57    m.def("duplicate_registration", []() {
58        class Dupe1 { };
59        class Dupe2 { };
60        class Dupe3 { };
61        class DupeException { };
62
63        auto dm = py::module("dummy");
64        auto failures = py::list();
65
66        py::class_<Dupe1>(dm, "Dupe1");
67        py::class_<Dupe2>(dm, "Dupe2");
68        dm.def("dupe1_factory", []() { return Dupe1(); });
69        py::exception<DupeException>(dm, "DupeException");
70
71        try {
72            py::class_<Dupe1>(dm, "Dupe1");
73            failures.append("Dupe1 class");
74        } catch (std::runtime_error &) {}
75        try {
76            dm.def("Dupe1", []() { return Dupe1(); });
77            failures.append("Dupe1 function");
78        } catch (std::runtime_error &) {}
79        try {
80            py::class_<Dupe3>(dm, "dupe1_factory");
81            failures.append("dupe1_factory");
82        } catch (std::runtime_error &) {}
83        try {
84            py::exception<Dupe3>(dm, "Dupe2");
85            failures.append("Dupe2");
86        } catch (std::runtime_error &) {}
87        try {
88            dm.def("DupeException", []() { return 30; });
89            failures.append("DupeException1");
90        } catch (std::runtime_error &) {}
91        try {
92            py::class_<DupeException>(dm, "DupeException");
93            failures.append("DupeException2");
94        } catch (std::runtime_error &) {}
95
96        return failures;
97    });
98}
99