mirror of
https://github.com/ThePhD/sol2.git
synced 2024-03-22 13:10:44 +08:00
269 lines
8.2 KiB
C++
269 lines
8.2 KiB
C++
// sol3
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// The MIT License (MIT)
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// Copyright (c) 2013-2018 Rapptz, ThePhD and contributors
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// Permission is hereby granted, free of charge, to any person obtaining a copy of
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// this software and associated documentation files (the "Software"), to deal in
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// the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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// the Software, and to permit persons to whom the Software is furnished to do so,
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// subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#include "test_sol.hpp"
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#include <catch.hpp>
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#include <iostream>
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TEST_CASE("environments/get", "Envronments can be taken out of things like Lua functions properly") {
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sol::state lua;
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sol::stack_guard luasg(lua);
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lua.open_libraries(sol::lib::base);
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auto result1 = lua.safe_script("f = function() return test end", sol::script_pass_on_error);
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REQUIRE(result1.valid());
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sol::function f = lua["f"];
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sol::environment env_f(lua, sol::create);
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env_f["test"] = 31;
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sol::set_environment(env_f, f);
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int result = f();
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REQUIRE(result == 31);
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auto result2 = lua.safe_script("g = function() test = 5 end", sol::script_pass_on_error);
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REQUIRE(result2.valid());
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sol::function g = lua["g"];
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sol::environment env_g(lua, sol::create);
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env_g.set_on(g);
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g();
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int test = env_g["test"];
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REQUIRE(test == 5);
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sol::object global_test = lua["test"];
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REQUIRE(!global_test.valid());
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auto result3 = lua.safe_script("h = function() end", sol::script_pass_on_error);
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REQUIRE(result3.valid());
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lua.set_function("check_f_env",
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[&lua, &env_f](sol::object target) {
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sol::stack_guard sg(lua);
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sol::environment target_env(sol::env_key, target);
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int test_env_f = env_f["test"];
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int test_target_env = target_env["test"];
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REQUIRE(test_env_f == test_target_env);
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REQUIRE(test_env_f == 31);
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REQUIRE(env_f == target_env);
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});
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lua.set_function("check_g_env",
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[&lua, &env_g](sol::function target) {
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sol::stack_guard sg(lua);
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sol::environment target_env = sol::get_environment(target);
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int test_env_g = env_g["test"];
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int test_target_env = target_env["test"];
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REQUIRE(test_env_g == test_target_env);
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REQUIRE(test_env_g == 5);
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REQUIRE(env_g == target_env);
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});
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lua.set_function("check_h_env",
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[&lua](sol::function target) {
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sol::stack_guard sg(lua);
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sol::environment target_env = sol::get_environment(target);
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});
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auto checkf = lua.safe_script("check_f_env(f)");
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REQUIRE(checkf.valid());
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auto checkg = lua.safe_script("check_g_env(g)");
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REQUIRE(checkg.valid());
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auto checkh = lua.safe_script("check_h_env(h)");
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REQUIRE(checkh.valid());
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}
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TEST_CASE("environments/shadowing", "Environments can properly shadow and fallback on variables") {
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sol::state lua;
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lua["b"] = 2142;
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SECTION("no fallback") {
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sol::environment plain_env(lua, sol::create);
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auto result1 = lua.safe_script("a = 24", plain_env, sol::script_pass_on_error);
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REQUIRE(result1.valid());
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sol::optional<int> maybe_env_a = plain_env["a"];
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sol::optional<int> maybe_global_a = lua["a"];
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sol::optional<int> maybe_env_b = plain_env["b"];
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sol::optional<int> maybe_global_b = lua["b"];
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REQUIRE(maybe_env_a != sol::nullopt);
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REQUIRE(maybe_env_a.value() == 24);
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REQUIRE(maybe_env_b == sol::nullopt);
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REQUIRE(maybe_global_a == sol::nullopt);
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REQUIRE(maybe_global_b != sol::nullopt);
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REQUIRE(maybe_global_b.value() == 2142);
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}
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SECTION("fallback") {
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sol::environment env_with_fallback(lua, sol::create, lua.globals());
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auto result1 = lua.safe_script("a = 56", env_with_fallback, sol::script_pass_on_error);
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REQUIRE(result1.valid());
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sol::optional<int> maybe_env_a = env_with_fallback["a"];
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sol::optional<int> maybe_global_a = lua["a"];
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sol::optional<int> maybe_env_b = env_with_fallback["b"];
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sol::optional<int> maybe_global_b = lua["b"];
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REQUIRE(maybe_env_a != sol::nullopt);
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REQUIRE(maybe_env_a.value() == 56);
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REQUIRE(maybe_env_b != sol::nullopt);
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REQUIRE(maybe_env_b.value() == 2142);
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REQUIRE(maybe_global_a == sol::nullopt);
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REQUIRE(maybe_global_b != sol::nullopt);
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REQUIRE(maybe_global_b.value() == 2142);
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}
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SECTION("from name") {
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sol::environment env_with_fallback(lua, sol::create, lua.globals());
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lua["env"] = env_with_fallback;
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sol::environment env = lua["env"];
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auto result1 = lua.safe_script("a = 56", env, sol::script_pass_on_error);
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REQUIRE(result1.valid());
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sol::optional<int> maybe_env_a = env["a"];
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sol::optional<int> maybe_global_a = lua["a"];
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sol::optional<int> maybe_env_b = env["b"];
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sol::optional<int> maybe_global_b = lua["b"];
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REQUIRE(maybe_env_a != sol::nullopt);
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REQUIRE(maybe_env_a.value() == 56);
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REQUIRE(maybe_env_b != sol::nullopt);
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REQUIRE(maybe_env_b.value() == 2142);
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REQUIRE(maybe_global_a == sol::nullopt);
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REQUIRE(maybe_global_b != sol::nullopt);
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REQUIRE(maybe_global_b.value() == 2142);
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}
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SECTION("name with newtable") {
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lua["blank_env"] = sol::new_table(0, 1);
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sol::environment plain_env = lua["blank_env"];
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auto result1 = lua.safe_script("a = 24", plain_env, sol::script_pass_on_error);
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REQUIRE(result1.valid());
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sol::optional<int> maybe_env_a = plain_env["a"];
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sol::optional<int> maybe_global_a = lua["a"];
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sol::optional<int> maybe_env_b = plain_env["b"];
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sol::optional<int> maybe_global_b = lua["b"];
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REQUIRE(maybe_env_a != sol::nullopt);
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REQUIRE(maybe_env_a.value() == 24);
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REQUIRE(maybe_env_b == sol::nullopt);
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REQUIRE(maybe_global_a == sol::nullopt);
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REQUIRE(maybe_global_b != sol::nullopt);
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REQUIRE(maybe_global_b.value() == 2142);
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}
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}
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TEST_CASE("environments/functions", "see if environments on functions are working properly") {
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SECTION("basic") {
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sol::state lua;
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auto result1 = lua.safe_script("a = function() return 5 end", sol::script_pass_on_error);
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REQUIRE(result1.valid());
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sol::function a = lua["a"];
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int result0 = a();
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REQUIRE(result0 == 5);
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sol::environment env(lua, sol::create);
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sol::set_environment(env, a);
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int value = a();
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REQUIRE(value == 5);
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}
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SECTION("return environment value") {
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sol::state lua;
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auto result1 = lua.safe_script("a = function() return test end", sol::script_pass_on_error);
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REQUIRE(result1.valid());
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sol::function a = lua["a"];
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sol::environment env(lua, sol::create);
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env["test"] = 5;
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env.set_on(a);
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// the function returns the value from the environment table
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int result = a();
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REQUIRE(result == 5);
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}
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SECTION("set environment value") {
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sol::state lua;
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auto result1 = lua.safe_script("a = function() test = 5 end", sol::script_pass_on_error);
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REQUIRE(result1.valid());
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sol::function a = lua["a"];
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sol::environment env(lua, sol::create);
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sol::set_environment(env, a);
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a();
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// the value can be retrieved from the env table
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int result = env["test"];
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REQUIRE(result == 5);
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// the global environment is not polluted
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auto gtest = lua["test"];
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REQUIRE(!gtest.valid());
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}
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}
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TEST_CASE("environments/this_environment", "test various situations of pulling out an environment") {
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static std::string code = "return (f(10))";
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sol::state lua;
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lua["f"] = [](sol::this_environment te, int x, sol::this_state ts) {
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if (te) {
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sol::environment& env = te;
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return x + static_cast<int>(env["x"]);
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}
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sol::state_view lua = ts;
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return x + static_cast<int>(lua["x"]);
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};
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sol::environment e(lua, sol::create, lua.globals());
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lua["x"] = 5;
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e["x"] = 20;
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SECTION("from Lua script") {
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auto result1 = lua.safe_script(code, e, sol::script_pass_on_error);
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REQUIRE(result1.valid());
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int value = result1;
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REQUIRE(value == 30);
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}
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SECTION("from C++") {
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sol::function f = lua["f"];
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e.set_on(f);
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int value = f(10);
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REQUIRE(value == 30);
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}
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SECTION("from C++, with no env") {
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sol::function f = lua["f"];
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int value = f(10);
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REQUIRE(value == 15);
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}
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}
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