pybind11/tests/test_iostream.cpp

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/*
tests/test_iostream.cpp -- Usage of scoped_output_redirect
Copyright (c) 2017 Henry F. Schreiner
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/iostream.h>
#include "pybind11_tests.h"
#include <iostream>
void noisy_function(std::string msg, bool flush) {
std::cout << msg;
if (flush)
std::cout << std::flush;
}
void noisy_funct_dual(std::string msg, std::string emsg) {
std::cout << msg;
std::cerr << emsg;
}
TEST_SUBMODULE(iostream, m) {
add_ostream_redirect(m);
// test_evals
m.def("captured_output_default", [](std::string msg) {
py::scoped_ostream_redirect redir;
std::cout << msg << std::flush;
});
m.def("captured_output", [](std::string msg) {
py::scoped_ostream_redirect redir(std::cout, py::module::import("sys").attr("stdout"));
std::cout << msg << std::flush;
});
m.def("guard_output", &noisy_function,
py::call_guard<py::scoped_ostream_redirect>(),
py::arg("msg"), py::arg("flush")=true);
m.def("captured_err", [](std::string msg) {
py::scoped_ostream_redirect redir(std::cerr, py::module::import("sys").attr("stderr"));
std::cerr << msg << std::flush;
});
m.def("noisy_function", &noisy_function, py::arg("msg"), py::arg("flush") = true);
m.def("dual_guard", &noisy_funct_dual,
py::call_guard<py::scoped_ostream_redirect, py::scoped_estream_redirect>(),
py::arg("msg"), py::arg("emsg"));
m.def("raw_output", [](std::string msg) {
std::cout << msg << std::flush;
});
m.def("raw_err", [](std::string msg) {
std::cerr << msg << std::flush;
});
m.def("captured_dual", [](std::string msg, std::string emsg) {
py::scoped_ostream_redirect redirout(std::cout, py::module::import("sys").attr("stdout"));
py::scoped_ostream_redirect redirerr(std::cerr, py::module::import("sys").attr("stderr"));
std::cout << msg << std::flush;
std::cerr << emsg << std::flush;
});
}