pybind11_tests.h revision 12391:ceeca8b41e4b 
1#pragma once
2#include <pybind11/pybind11.h>
3
4#if defined(_MSC_VER) && _MSC_VER < 1910
5// We get some really long type names here which causes MSVC 2015 to emit warnings
6#  pragma warning(disable: 4503) // warning C4503: decorated name length exceeded, name was truncated
7#endif
8
9namespace py = pybind11;
10using namespace pybind11::literals;
11
12class test_initializer {
13    using Initializer = void (*)(py::module &);
14
15public:
16    test_initializer(Initializer init);
17    test_initializer(const char *submodule_name, Initializer init);
18};
19
20#define TEST_SUBMODULE(name, variable)                   \
21    void test_submodule_##name(py::module &);            \
22    test_initializer name(#name, test_submodule_##name); \
23    void test_submodule_##name(py::module &variable)
24
25
26/// Dummy type which is not exported anywhere -- something to trigger a conversion error
27struct UnregisteredType { };
28
29/// A user-defined type which is exported and can be used by any test
30class UserType {
31public:
32    UserType() = default;
33    UserType(int i) : i(i) { }
34
35    int value() const { return i; }
36    void set(int set) { i = set; }
37
38private:
39    int i = -1;
40};
41
42/// Like UserType, but increments `value` on copy for quick reference vs. copy tests
43class IncType : public UserType {
44public:
45    using UserType::UserType;
46    IncType() = default;
47    IncType(const IncType &other) : IncType(other.value() + 1) { }
48    IncType(IncType &&) = delete;
49    IncType &operator=(const IncType &) = delete;
50    IncType &operator=(IncType &&) = delete;
51};
52
53/// Custom cast-only type that casts to a string "rvalue" or "lvalue" depending on the cast context.
54/// Used to test recursive casters (e.g. std::tuple, stl containers).
55struct RValueCaster {};
56NAMESPACE_BEGIN(pybind11)
57NAMESPACE_BEGIN(detail)
58template<> class type_caster<RValueCaster> {
59public:
60    PYBIND11_TYPE_CASTER(RValueCaster, _("RValueCaster"));
61    static handle cast(RValueCaster &&, return_value_policy, handle) { return py::str("rvalue").release(); }
62    static handle cast(const RValueCaster &, return_value_policy, handle) { return py::str("lvalue").release(); }
63};
64NAMESPACE_END(detail)
65NAMESPACE_END(pybind11)
66