catch.cpp

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// The Catch implementation is compiled here. This is a standalone
// translation unit to avoid recompiling it for every test change.
 
#include <pybind11/embed.h>
 
// Silence MSVC C++17 deprecation warning from Catch regarding std::uncaught_exceptions (up to
// catch 2.0.1; this should be fixed in the next catch release after 2.0.1).
PYBIND11_WARNING_DISABLE_MSVC(4996)
 
// Catch uses _ internally, which breaks gettext style defines
#ifdef _
#    undef _
#endif
 
#define CATCH_CONFIG_RUNNER
#include <catch.hpp>
 
namespace py = pybind11;
 
int main(int argc, char *argv[]) {
    // Setup for TEST_CASE in test_interpreter.cpp, tagging on a large random number:
    std::string updated_pythonpath("pybind11_test_embed_PYTHONPATH_2099743835476552");
    const char *preexisting_pythonpath = getenv("PYTHONPATH");
    if (preexisting_pythonpath != nullptr) {
#if defined(_WIN32)
        updated_pythonpath += ';';
#else
        updated_pythonpath += ':';
#endif
        updated_pythonpath += preexisting_pythonpath;
    }
#if defined(_WIN32)
    _putenv_s("PYTHONPATH", updated_pythonpath.c_str());
#else
    setenv("PYTHONPATH", updated_pythonpath.c_str(), /*replace=*/1);
#endif
 
    py::scoped_interpreter guard{};
 
    auto result = Catch::Session().run(argc, argv);
 
    return result < 0xff ? result : 0xff;
}