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test_constants_and_functions.cpp
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test_constants_and_functions.cpp
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/*
tests/test_constants_and_functions.cpp -- global constants and functions, enumerations, raw byte strings
Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch>
All rights reserved. Use of this source code is governed by a
BSD-style license that can be found in the LICENSE file.
*/
#include "pybind11_tests.h"
enum MyEnum { EFirstEntry = 1, ESecondEntry };
std::string test_function1() {
return "test_function()";
}
std::string test_function2(MyEnum k) {
return "test_function(enum=" + std::to_string(k) + ")";
}
std::string test_function3(int i) {
return "test_function(" + std::to_string(i) + ")";
}
py::str test_function4() { return "test_function()"; }
py::str test_function4(char *) { return "test_function(char *)"; }
py::str test_function4(int, float) { return "test_function(int, float)"; }
py::str test_function4(float, int) { return "test_function(float, int)"; }
py::bytes return_bytes() {
const char *data = "\x01\x00\x02\x00";
return std::string(data, 4);
}
std::string print_bytes(py::bytes bytes) {
std::string ret = "bytes[";
const auto value = static_cast<std::string>(bytes);
for (size_t i = 0; i < value.length(); ++i) {
ret += std::to_string(static_cast<int>(value[i])) + " ";
}
ret.back() = ']';
return ret;
}
// Test that we properly handle C++17 exception specifiers (which are part of the function signature
// in C++17). These should all still work before C++17, but don't affect the function signature.
namespace test_exc_sp {
// [workaround(intel)] Unable to use noexcept instead of noexcept(true)
// Make the f1 test basically the same as the f2 test in C++17 mode for the Intel compiler as
// it fails to compile with a plain noexcept (tested with icc (ICC) 2021.1 Beta 20200827).
#if defined(__INTEL_COMPILER) && defined(PYBIND11_CPP17)
int f1(int x) noexcept(true) { return x+1; }
#else
int f1(int x) noexcept { return x+1; }
#endif
int f2(int x) noexcept(true) { return x+2; }
int f3(int x) noexcept(false) { return x+3; }
#if defined(__GNUG__) && !defined(__INTEL_COMPILER)
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wdeprecated"
#endif
int f4(int x) throw() { return x+4; } // Deprecated equivalent to noexcept(true)
#if defined(__GNUG__) && !defined(__INTEL_COMPILER)
# pragma GCC diagnostic pop
#endif
struct C {
int m1(int x) noexcept { return x-1; }
int m2(int x) const noexcept { return x-2; }
int m3(int x) noexcept(true) { return x-3; }
int m4(int x) const noexcept(true) { return x-4; }
int m5(int x) noexcept(false) { return x-5; }
int m6(int x) const noexcept(false) { return x-6; }
#if defined(__GNUG__) && !defined(__INTEL_COMPILER)
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wdeprecated"
#endif
int m7(int x) throw() { return x-7; }
int m8(int x) const throw() { return x-8; }
#if defined(__GNUG__) && !defined(__INTEL_COMPILER)
# pragma GCC diagnostic pop
#endif
};
} // namespace test_exc_sp
TEST_SUBMODULE(constants_and_functions, m) {
// test_constants
m.attr("some_constant") = py::int_(14);
// test_function_overloading
m.def("test_function", &test_function1);
m.def("test_function", &test_function2);
m.def("test_function", &test_function3);
#if defined(PYBIND11_OVERLOAD_CAST)
m.def("test_function", py::overload_cast<>(&test_function4));
m.def("test_function", py::overload_cast<char *>(&test_function4));
m.def("test_function", py::overload_cast<int, float>(&test_function4));
m.def("test_function", py::overload_cast<float, int>(&test_function4));
#else
m.def("test_function", static_cast<py::str (*)()>(&test_function4));
m.def("test_function", static_cast<py::str (*)(char *)>(&test_function4));
m.def("test_function", static_cast<py::str (*)(int, float)>(&test_function4));
m.def("test_function", static_cast<py::str (*)(float, int)>(&test_function4));
#endif
py::enum_<MyEnum>(m, "MyEnum")
.value("EFirstEntry", EFirstEntry)
.value("ESecondEntry", ESecondEntry)
.export_values();
// test_bytes
m.def("return_bytes", &return_bytes);
m.def("print_bytes", &print_bytes);
// test_exception_specifiers
using namespace test_exc_sp;
py::class_<C>(m, "C")
.def(py::init<>())
.def("m1", &C::m1)
.def("m2", &C::m2)
.def("m3", &C::m3)
.def("m4", &C::m4)
.def("m5", &C::m5)
.def("m6", &C::m6)
.def("m7", &C::m7)
.def("m8", &C::m8)
;
m.def("f1", f1);
m.def("f2", f2);
m.def("f3", f3);
m.def("f4", f4);
// test_function_record_leaks
struct LargeCapture {
// This should always be enough to trigger the alternative branch
// where `sizeof(capture) > sizeof(rec->data)`
uint64_t zeros[10] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
};
m.def("register_large_capture_with_invalid_arguments", [](py::module_ m) {
LargeCapture capture; // VS 2015's MSVC is acting up if we create the array here
m.def("should_raise", [capture](int) { return capture.zeros[9] + 33; }, py::kw_only(), py::arg());
});
m.def("register_with_raising_repr", [](py::module_ m, py::object default_value) {
m.def("should_raise", [](int, int, py::object) { return 42; }, "some docstring",
py::arg_v("x", 42), py::arg_v("y", 42, "<the answer>"), py::arg_v("z", default_value));
});
}