Function TEST_SUBMODULE

tests/test_kwargs_and_defaults.cpp:17–331

#include <utility>

TEST_SUBMODULE(kwargs_and_defaults, m) {
    auto kw_func
        = [](int x, int y) { return "x=" + std::to_string(x) + ", y=" + std::to_string(y); };

    // test_named_arguments
    m.def("kw_func0", kw_func);
    m.def("kw_func1", kw_func, py::arg("x"), py::arg("y"));
    m.def("kw_func2", kw_func, py::arg("x") = 100, py::arg("y") = 200);
    m.def("kw_func3", [](const char *) {}, py::arg("data") = std::string("Hello world!"));

    /* A fancier default argument */
    std::vector<int> list{{13, 17}};
    m.def(
        "kw_func4",
        [](const std::vector<int> &entries) {
            std::string ret = "{";
            for (int i : entries) {
                ret += std::to_string(i) + " ";
            }
            ret.back() = '}';
            return ret;
        },
        py::arg("myList") = list);

    m.def("kw_func_udl", kw_func, "x"_a, "y"_a = 300);
    m.def("kw_func_udl_z", kw_func, "x"_a, "y"_a = 0);

    // test line breaks in default argument representation
    struct CustomRepr {
        std::string repr_string;

        explicit CustomRepr(const std::string &repr) : repr_string(repr) {}

        std::string __repr__() const { return repr_string; }
    };

    py::class_<CustomRepr>(m, "CustomRepr")
        .def(py::init<const std::string &>())
        .def("__repr__", &CustomRepr::__repr__);

    m.def(
        "kw_lb_func0",
        [](const CustomRepr &) {},
        py::arg("custom") = CustomRepr("  array([[A, B], [C, D]])  "));
    m.def(
        "kw_lb_func1",
        [](const CustomRepr &) {},
        py::arg("custom") = CustomRepr("  array([[A, B],\n[C, D]])  "));
    m.def(
        "kw_lb_func2",
        [](const CustomRepr &) {},
        py::arg("custom") = CustomRepr("\v\n   array([[A, B], [C, D]])"));
    m.def(
        "kw_lb_func3",
        [](const CustomRepr &) {},
        py::arg("custom") = CustomRepr("array([[A, B], [C, D]])   \f\n"));
    m.def(
        "kw_lb_func4",