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
TEST_SUBMODULE(modules,m)14 TEST_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 ©) { 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 ©) { 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