120 lines
3.1 KiB
C++
120 lines
3.1 KiB
C++
/*
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tests/test_eval.cpp -- Usage of eval() and eval_file()
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Copyright (c) 2016 Klemens D. Morgenstern
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All rights reserved. Use of this source code is governed by a
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BSD-style license that can be found in the LICENSE file.
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*/
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#include <pybind11/eval.h>
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#include "pybind11_tests.h"
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#include <utility>
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TEST_SUBMODULE(eval_, m) {
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// test_evals
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auto global = py::dict(py::module_::import("__main__").attr("__dict__"));
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m.def("test_eval_statements", [global]() {
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auto local = py::dict();
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local["call_test"] = py::cpp_function([&]() -> int {
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return 42;
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});
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// Regular string literal
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py::exec(
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"message = 'Hello World!'\n"
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"x = call_test()",
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global, local
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);
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// Multi-line raw string literal
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py::exec(R"(
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if x == 42:
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print(message)
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else:
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raise RuntimeError
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)", global, local
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);
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auto x = local["x"].cast<int>();
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return x == 42;
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});
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m.def("test_eval", [global]() {
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auto local = py::dict();
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local["x"] = py::int_(42);
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auto x = py::eval("x", global, local);
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return x.cast<int>() == 42;
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});
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m.def("test_eval_single_statement", []() {
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auto local = py::dict();
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local["call_test"] = py::cpp_function([&]() -> int {
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return 42;
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});
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auto result = py::eval<py::eval_single_statement>("x = call_test()", py::dict(), local);
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auto x = local["x"].cast<int>();
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return result.is_none() && x == 42;
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});
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m.def("test_eval_file", [global](py::str filename) {
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auto local = py::dict();
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local["y"] = py::int_(43);
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int val_out = 0;
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local["call_test2"] = py::cpp_function([&](int value) { val_out = value; });
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auto result = py::eval_file(std::move(filename), global, local);
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return val_out == 43 && result.is_none();
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});
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m.def("test_eval_failure", []() {
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try {
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py::eval("nonsense code ...");
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} catch (py::error_already_set &) {
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return true;
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}
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return false;
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});
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m.def("test_eval_file_failure", []() {
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try {
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py::eval_file("non-existing file");
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} catch (std::exception &) {
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return true;
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}
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return false;
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});
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// test_eval_empty_globals
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m.def("eval_empty_globals", [](py::object global) {
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if (global.is_none())
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global = py::dict();
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auto int_class = py::eval("isinstance(42, int)", global);
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return global;
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});
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// test_eval_closure
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m.def("test_eval_closure", []() {
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py::dict global;
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global["closure_value"] = 42;
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py::dict local;
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local["closure_value"] = 0;
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py::exec(R"(
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local_value = closure_value
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def func_global():
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return closure_value
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def func_local():
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return local_value
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)", global, local);
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return std::make_pair(global, local);
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});
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}
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