mirror of
https://github.com/pybind/pybind11.git
synced 2024-11-23 05:35:13 +00:00
a0c1ccf0a9
Use simple asserts and pytest's powerful introspection to make testing simpler. This merges the old .py/.ref file pairs into simple .py files where the expected values are right next to the code being tested. This commit does not touch the C++ part of the code and replicates the Python tests exactly like the old .ref-file-based approach.
109 lines
3.3 KiB
C++
109 lines
3.3 KiB
C++
/*
|
|
tests/test_custom-exceptions.cpp -- exception translation
|
|
|
|
Copyright (c) 2016 Pim Schellart <P.Schellart@princeton.edu>
|
|
|
|
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"
|
|
|
|
// A type that should be raised as an exeption in Python
|
|
class MyException : public std::exception {
|
|
public:
|
|
explicit MyException(const char * m) : message{m} {}
|
|
virtual const char * what() const noexcept override {return message.c_str();}
|
|
private:
|
|
std::string message = "";
|
|
};
|
|
|
|
// A type that should be translated to a standard Python exception
|
|
class MyException2 : public std::exception {
|
|
public:
|
|
explicit MyException2(const char * m) : message{m} {}
|
|
virtual const char * what() const noexcept override {return message.c_str();}
|
|
private:
|
|
std::string message = "";
|
|
};
|
|
|
|
// A type that is not derived from std::exception (and is thus unknown)
|
|
class MyException3 {
|
|
public:
|
|
explicit MyException3(const char * m) : message{m} {}
|
|
virtual const char * what() const noexcept {return message.c_str();}
|
|
private:
|
|
std::string message = "";
|
|
};
|
|
|
|
// A type that should be translated to MyException
|
|
// and delegated to its exception translator
|
|
class MyException4 : public std::exception {
|
|
public:
|
|
explicit MyException4(const char * m) : message{m} {}
|
|
virtual const char * what() const noexcept override {return message.c_str();}
|
|
private:
|
|
std::string message = "";
|
|
};
|
|
|
|
void throws1() {
|
|
throw MyException("this error should go to a custom type");
|
|
}
|
|
|
|
void throws2() {
|
|
throw MyException2("this error should go to a standard Python exception");
|
|
}
|
|
|
|
void throws3() {
|
|
throw MyException3("this error cannot be translated");
|
|
}
|
|
|
|
void throws4() {
|
|
throw MyException4("this error is rethrown");
|
|
}
|
|
|
|
void throws_logic_error() {
|
|
throw std::logic_error("this error should fall through to the standard handler");
|
|
}
|
|
|
|
void init_ex_custom_exceptions(py::module &m) {
|
|
// make a new custom exception and use it as a translation target
|
|
static py::exception<MyException> ex(m, "MyException");
|
|
py::register_exception_translator([](std::exception_ptr p) {
|
|
try {
|
|
if (p) std::rethrow_exception(p);
|
|
} catch (const MyException &e) {
|
|
PyErr_SetString(ex.ptr(), e.what());
|
|
}
|
|
});
|
|
|
|
// register new translator for MyException2
|
|
// no need to store anything here because this type will
|
|
// never by visible from Python
|
|
py::register_exception_translator([](std::exception_ptr p) {
|
|
try {
|
|
if (p) std::rethrow_exception(p);
|
|
} catch (const MyException2 &e) {
|
|
PyErr_SetString(PyExc_RuntimeError, e.what());
|
|
}
|
|
});
|
|
|
|
// register new translator for MyException4
|
|
// which will catch it and delegate to the previously registered
|
|
// translator for MyException by throwing a new exception
|
|
py::register_exception_translator([](std::exception_ptr p) {
|
|
try {
|
|
if (p) std::rethrow_exception(p);
|
|
} catch (const MyException4 &e) {
|
|
throw MyException(e.what());
|
|
}
|
|
});
|
|
|
|
m.def("throws1", &throws1);
|
|
m.def("throws2", &throws2);
|
|
m.def("throws3", &throws3);
|
|
m.def("throws4", &throws4);
|
|
m.def("throws_logic_error", &throws_logic_error);
|
|
}
|
|
|