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// sol2
// The MIT License (MIT)
// Copyright (c) 2013-2022 Rapptz, ThePhD and contributors
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#include <catch2/catch_all.hpp>
#include <sol/sol.hpp>
TEST_CASE("environments/this_environment", "test various situations of pulling out an environment") {
static std::string code = "return (f(10))";
sol::state lua;
sol::stack_guard luasg(lua);
lua["f"] = [](sol::this_environment te, int x, sol::this_state ts) {
if (te) {
sol::environment& env = te;
return x + static_cast<int>(env["x"]);
}
sol::state_view lua = ts;
return x + static_cast<int>(lua["x"]);
};
sol::environment e(lua, sol::create, lua.globals());
lua["x"] = 5;
e["x"] = 20;
SECTION("from Lua script") {
int value = 0;
{
auto result1 = lua.safe_script(code, e, sol::script_pass_on_error);
REQUIRE(result1.valid());
value = result1;
}
REQUIRE(value == 30);
}
SECTION("from C++") {
sol::function f = lua["f"];
{
sol::stack_guard luasg_env(lua);
bool env_set = e.set_on(f);
REQUIRE(env_set);
}
int value = f(10);
REQUIRE(value == 30);
}
SECTION("from C++, with no env") {
sol::function f = lua["f"];
int value = f(10);
REQUIRE(value == 15);
}
}
TEST_CASE("environment/this_environment/nested_calls", "Test that this_environment actually finds the right environment in specific nested Lua call contexts") {
sol::state lua;
lua.open_libraries(sol::lib::base);
lua.set_function("print_no_env", [](int x) { REQUIRE(x == 1); });
lua.set_function("print_this_env", [](int x, sol::this_environment) { REQUIRE(x == 2); });
sol::protected_function_result result = lua.safe_script(R"(
local var = nil
function test_1_no_env()
var = 1
print_no_env(1)
end
function test_2_this_env()
var = 1
print_this_env(2)
end
test_1_no_env() -- should be ok
test_2_this_env() -- should be okay
)",
sol::script_pass_on_error);
REQUIRE(result.valid());
}
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