Function TEST_SUBMODULE

tests/test_multiple_inheritance.cpp:83–341

} // namespace

TEST_SUBMODULE(multiple_inheritance, m) {
    // Please do not interleave `struct` and `class` definitions with bindings code,
    // but implement `struct`s and `class`es in the anonymous namespace above.
    // This helps keeping the smart_holder branch in sync with master.

    // test_multiple_inheritance_mix1
    // test_multiple_inheritance_mix2
    struct Base1 {
        explicit Base1(int i) : i(i) {}
        int foo() const { return i; }
        int i;
    };
    py::class_<Base1> b1(m, "Base1");
    b1.def(py::init<int>()).def("foo", &Base1::foo);

    struct Base2 {
        explicit Base2(int i) : i(i) {}
        int bar() const { return i; }
        int i;
    };
    py::class_<Base2> b2(m, "Base2");
    b2.def(py::init<int>()).def("bar", &Base2::bar);

    // test_multiple_inheritance_cpp
    struct Base12 : Base1, Base2 {
        Base12(int i, int j) : Base1(i), Base2(j) {}
    };
    struct MIType : Base12 {
        MIType(int i, int j) : Base12(i, j) {}
    };
    py::class_<Base12, Base1, Base2>(m, "Base12");
    py::class_<MIType, Base12>(m, "MIType").def(py::init<int, int>());

    // test_multiple_inheritance_python_many_bases
#define PYBIND11_BASEN(N)                                                                         \
    py::class_<BaseN<(N)>>(m, "BaseN" #N).def(py::init<int>()).def("f" #N, [](BaseN<N> &b) {      \
        return b.i + (N);                                                                         \
    })
    PYBIND11_BASEN(1);
    PYBIND11_BASEN(2);
    PYBIND11_BASEN(3);
    PYBIND11_BASEN(4);
    PYBIND11_BASEN(5);
    PYBIND11_BASEN(6);
    PYBIND11_BASEN(7);
    PYBIND11_BASEN(8);
    PYBIND11_BASEN(9);
    PYBIND11_BASEN(10);
    PYBIND11_BASEN(11);
    PYBIND11_BASEN(12);
    PYBIND11_BASEN(13);
    PYBIND11_BASEN(14);
    PYBIND11_BASEN(15);
    PYBIND11_BASEN(16);
    PYBIND11_BASEN(17);

    // Uncommenting this should result in a compile time failure (MI can only be specified via
    // template parameters because pybind has to know the types involved; see discussion in #742