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sol2/tests.cpp

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#define CATCH_CONFIG_MAIN
#define SOL_CHECK_ARGUMENTS
#include <catch.hpp>
#include <sol.hpp>
#include <vector>
#include <map>
struct stack_guard {
lua_State* L;
int& begintop;
int& endtop;
stack_guard(lua_State* L, int& begintop, int& endtop) : L(L), begintop(begintop), endtop(endtop) {
begintop = lua_gettop(L);
}
~stack_guard() { endtop = lua_gettop(L); }
};
void test_free_func(std::function<void()> f) {
f();
}
void test_free_func2(std::function<int(int)> f, int arg1) {
int val = f(arg1);
if(val != arg1)
throw sol::error("failed function call!");
}
std::function<int()> makefn() {
auto fx = []() -> int {
return 0x1456789;
};
return fx;
}
void takefn(std::function<int()> purr) {
if (purr() != 0x1456789)
throw 0;
}
std::string free_function() {
std::cout << "free_function()" << std::endl;
return "test";
}
int overloaded(int x) {
std::cout << x << std::endl;
return 3;
}
int overloaded(int x, int y) {
std::cout << x << " " << y << std::endl;
return 7;
}
int overloaded(int x, int y, int z) {
std::cout << x << " " << y << " " << z << std::endl;
return 11;
}
int non_overloaded(int x, int y, int z) {
std::cout << x << " " << y << " " << z << std::endl;
return 13;
}
std::vector<int> test_table_return_one() {
return { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
}
std::vector<std::pair<std::string, int>> test_table_return_two() {
return {{ "one", 1 }, { "two", 2 }, { "three", 3 }};
}
std::map<std::string, std::string> test_table_return_three() {
return {{ "name", "Rapptz" }, { "friend", "ThePhD" }, { "project", "sol" }};
}
struct self_test {
int bark;
self_test() : bark(100) {
}
void g(const std::string& str) {
std::cout << str << '\n';
bark += 1;
}
void f(const self_test& t) {
std::cout << "got test" << '\n';
if (t.bark != bark)
throw sol::error("bark values are not the same for self_test f function");
if (&t != this)
throw sol::error("call does not reference self for self_test f function");
}
};
int func_1(int) {
return 1;
}
std::string func_1s(std::string a) {
return "string: " + a;
}
int func_2(int, int) {
return 2;
}
void func_3(int, int, int) {
}
struct vars {
vars () {
}
int boop = 0;
~vars () {
}
};
struct object {
std::string operator() () {
std::cout << "member_test()" << std::endl;
return "test";
}
};
struct fuser {
int x;
fuser() : x(0) {}
fuser(int x) : x(x) {}
int add(int y) {
return x + y;
}
int add2(int y) {
return x + y + 2;
}
};
namespace crapola {
struct fuser {
int x;
fuser() : x(0) {}
fuser(int x) : x(x) {}
fuser(int x, int x2) : x(x * x2) {}
int add(int y) {
return x + y;
}
int add2(int y) {
return x + y + 2;
}
};
} // crapola
int plop_xyz(int x, int y, std::string z) {
std::cout << x << " " << y << " " << z << std::endl;
return 11;
}
class Base {
public:
Base(int a_num) : m_num(a_num) { }
int get_num() {
return m_num;
}
protected:
int m_num;
};
class Derived : public Base {
public:
Derived(int a_num) : Base(a_num) { }
int get_num_10() {
return 10 * m_num;
}
};
struct Vec {
float x, y, z;
Vec(float x, float y, float z) : x{x}, y{y}, z{z} {}
float length() {
return sqrtf(x*x + y*y + z*z);
}
Vec normalized() {
float invS = 1 / length();
return {x * invS, y * invS, z * invS};
}
};
struct giver {
int a = 0;
giver () {
}
void gief () {
a = 1;
}
static void stuff () {
}
static void gief_stuff (giver& t, int a) {
t.a = a;
}
~giver () {
}
};
struct factory_test {
private:
factory_test() { a = true_a; }
~factory_test() { a = 0; }
public:
static int num_saved;
static int num_killed;
struct deleter {
void operator()(factory_test* f) {
f->~factory_test();
}
};
static const int true_a;
int a;
static std::unique_ptr<factory_test, deleter> make() {
return std::unique_ptr<factory_test, deleter>( new factory_test(), deleter());
}
static void save(factory_test& f) {
new(&f)factory_test();
++num_saved;
}
static void kill(factory_test& f) {
f.~factory_test();
++num_killed;
}
};
int factory_test::num_saved = 0;
int factory_test::num_killed = 0;
const int factory_test::true_a = 156;
TEST_CASE("table/traversal", "ensure that we can chain requests and tunnel down into a value if we desire") {
sol::state lua;
int begintop = 0, endtop = 0;
lua.script("t1 = {t2 = {t3 = 24}};");
{
stack_guard g(lua.lua_state(), begintop, endtop);
int traversex24 = lua.traverse_get<int>("t1", "t2", "t3");
REQUIRE(traversex24 == 24);
} REQUIRE(begintop == endtop);
{
stack_guard g(lua.lua_state(), begintop, endtop);
int x24 = lua["t1"]["t2"]["t3"];
REQUIRE(x24 == 24);
} REQUIRE(begintop == endtop);
{
stack_guard g(lua.lua_state(), begintop, endtop);
lua["t1"]["t2"]["t3"] = 64;
int traversex64 = lua.traverse_get<int>("t1", "t2", "t3");
REQUIRE(traversex64 == 64);
} REQUIRE(begintop == endtop);
{
stack_guard g(lua.lua_state(), begintop, endtop);
int x64 = lua["t1"]["t2"]["t3"];
REQUIRE(x64 == 64);
} REQUIRE(begintop == endtop);
{
stack_guard g(lua.lua_state(), begintop, endtop);
lua.traverse_set("t1", "t2", "t3", 13);
int traversex13 = lua.traverse_get<int>("t1", "t2", "t3");
REQUIRE(traversex13 == 13);
} REQUIRE(begintop == endtop);
{
stack_guard g(lua.lua_state(), begintop, endtop);
int x13 = lua["t1"]["t2"]["t3"];
REQUIRE(x13 == 13);
} REQUIRE(begintop == endtop);
}
TEST_CASE("simple/set", "Check if the set works properly.") {
sol::state lua;
int begintop = 0, endtop = 0;
{
stack_guard g(lua.lua_state(), begintop, endtop);
lua.set("a", 9);
} REQUIRE(begintop == endtop);
REQUIRE_NOTHROW(lua.script("if a ~= 9 then error('wrong value') end"));
{
stack_guard g(lua.lua_state(), begintop, endtop);
lua.set("d", "hello");
} REQUIRE(begintop == endtop);
REQUIRE_NOTHROW(lua.script("if d ~= 'hello' then error('expected \\'hello\\', got '.. tostring(d)) end"));
{
stack_guard g(lua.lua_state(), begintop, endtop);
lua.set("e", std::string("hello"), "f", true);
} REQUIRE(begintop == endtop);
REQUIRE_NOTHROW(lua.script("if d ~= 'hello' then error('expected \\'hello\\', got '.. tostring(d)) end"));
REQUIRE_NOTHROW(lua.script("if f ~= true then error('wrong value') end"));
}
TEST_CASE("simple/get", "Tests if the get function works properly.") {
sol::state lua;
int begintop = 0, endtop = 0;
lua.script("a = 9");
{
stack_guard g(lua.lua_state(), begintop, endtop);
auto a = lua.get<int>("a");
REQUIRE(a == 9.0);
} REQUIRE(begintop == endtop);
lua.script("b = nil");
{
stack_guard g(lua.lua_state(), begintop, endtop);
REQUIRE_NOTHROW(lua.get<sol::nil_t>("b"));
} REQUIRE(begintop == endtop);
lua.script("d = 'hello'");
lua.script("e = true");
{
stack_guard g(lua.lua_state(), begintop, endtop);
std::string d;
bool e;
std::tie( d, e ) = lua.get<std::string, bool>("d", "e");
REQUIRE(d == "hello");
REQUIRE(e == true);
} REQUIRE(begintop == endtop);
}
TEST_CASE("simple/set-get-global-integer", "Tests if the get function works properly with global integers") {
sol::state lua;
lua[1] = 25.4;
lua.script("b = 1");
double a = lua.get<double>(1);
double b = lua.get<double>("b");
REQUIRE(a == 25.4);
REQUIRE(b == 1);
}
TEST_CASE("simple/addition", "check if addition works and can be gotten through lua.get and lua.set") {
sol::state lua;
lua.set("b", 0.2);
lua.script("c = 9 + b");
auto c = lua.get<double>("c");
REQUIRE(c == 9.2);
}
TEST_CASE("simple/if", "check if if statements work through lua") {
sol::state lua;
std::string program = "if true then f = 0.1 else f = 'test' end";
lua.script(program);
auto f = lua.get<double>("f");
REQUIRE(f == 0.1);
REQUIRE((f == lua["f"]));
}
TEST_CASE("simple/call-with-parameters", "Lua function is called with a few parameters from C++") {
sol::state lua;
REQUIRE_NOTHROW(lua.script("function my_add(i, j, k) return i + j + k end"));
auto f = lua.get<sol::function>("my_add");
REQUIRE_NOTHROW(lua.script("function my_nothing(i, j, k) end"));
auto fvoid = lua.get<sol::function>("my_nothing");
int a;
REQUIRE_NOTHROW(fvoid(1, 2, 3));
REQUIRE_NOTHROW(a = f.call<int>(1, 2, 3));
REQUIRE(a == 6);
REQUIRE_THROWS(a = f(1, 2, "arf"));
}
TEST_CASE("simple/call-c++-function", "C++ function is called from lua") {
sol::state lua;
lua.set_function("plop_xyz", plop_xyz);
lua.script("x = plop_xyz(2, 6, 'hello')");
REQUIRE(lua.get<int>("x") == 11);
}
TEST_CASE("simple/call-lambda", "A C++ lambda is exposed to lua and called") {
sol::state lua;
int x = 0;
lua.set_function("foo", [&x] { x = 1; });
lua.script("foo()");
REQUIRE(x == 1);
}
TEST_CASE("advanced/get-and-call", "Checks for lambdas returning values after a get operation") {
const static std::string lol = "lol", str = "str";
const static std::tuple<int, float, double, std::string> heh_tuple = std::make_tuple(1, 6.28f, 3.14, std::string("heh"));
sol::state lua;
REQUIRE_NOTHROW(lua.set_function("a", [] { return 42; }));
REQUIRE(lua.get<sol::function>("a").call<int>() == 42);
REQUIRE_NOTHROW(lua.set_function("b", [] { return 42u; }));
REQUIRE(lua.get<sol::function>("b").call<unsigned int>() == 42u);
REQUIRE_NOTHROW(lua.set_function("c", [] { return 3.14; }));
REQUIRE(lua.get<sol::function>("c").call<double>() == 3.14);
REQUIRE_NOTHROW(lua.set_function("d", [] { return 6.28f; }));
REQUIRE(lua.get<sol::function>("d").call<float>() == 6.28f);
REQUIRE_NOTHROW(lua.set_function("e", [] { return "lol"; }));
REQUIRE(lua.get<sol::function>("e").call<std::string>() == lol);
REQUIRE_NOTHROW(lua.set_function("f", [] { return true; }));
REQUIRE(lua.get<sol::function>("f").call<bool>());
REQUIRE_NOTHROW(lua.set_function("g", [] { return std::string("str"); }));
REQUIRE(lua.get<sol::function>("g").call<std::string>() == str);
REQUIRE_NOTHROW(lua.set_function("h", [] { }));
REQUIRE_NOTHROW(lua.get<sol::function>("h").call());
REQUIRE_NOTHROW(lua.set_function("i", [] { return sol::nil; }));
REQUIRE(lua.get<sol::function>("i").call<sol::nil_t>() == sol::nil);
REQUIRE_NOTHROW(lua.set_function("j", [] { return std::make_tuple(1, 6.28f, 3.14, std::string("heh")); }));
REQUIRE((lua.get<sol::function>("j").call<int, float, double, std::string>() == heh_tuple));
}
TEST_CASE("advanced/operator[]-call", "Checks for lambdas returning values using operator[]") {
const static std::string lol = "lol", str = "str";
const static std::tuple<int, float, double, std::string> heh_tuple = std::make_tuple(1, 6.28f, 3.14, std::string("heh"));
sol::state lua;
REQUIRE_NOTHROW(lua.set_function("a", [] { return 42; }));
REQUIRE(lua["a"].call<int>() == 42);
REQUIRE_NOTHROW(lua.set_function("b", [] { return 42u; }));
REQUIRE(lua["b"].call<unsigned int>() == 42u);
REQUIRE_NOTHROW(lua.set_function("c", [] { return 3.14; }));
REQUIRE(lua["c"].call<double>() == 3.14);
REQUIRE_NOTHROW(lua.set_function("d", [] { return 6.28f; }));
REQUIRE(lua["d"].call<float>() == 6.28f);
REQUIRE_NOTHROW(lua.set_function("e", [] { return "lol"; }));
REQUIRE(lua["e"].call<std::string>() == lol);
REQUIRE_NOTHROW(lua.set_function("f", [] { return true; }));
REQUIRE(lua["f"].call<bool>());
REQUIRE_NOTHROW(lua.set_function("g", [] { return std::string("str"); }));
REQUIRE(lua["g"].call<std::string>() == str);
REQUIRE_NOTHROW(lua.set_function("h", [] { }));
REQUIRE_NOTHROW(lua["h"].call());
REQUIRE_NOTHROW(lua.set_function("i", [] { return sol::nil; }));
REQUIRE(lua["i"].call<sol::nil_t>() == sol::nil);
REQUIRE_NOTHROW(lua.set_function("j", [] { return std::make_tuple(1, 6.28f, 3.14, std::string("heh")); }));
REQUIRE((lua["j"].call<int, float, double, std::string>() == heh_tuple));
}
TEST_CASE("advanced/call-lambdas", "A C++ lambda is exposed to lua and called") {
sol::state lua;
int x = 0;
lua.set_function("set_x", [&] (int new_x) {
x = new_x;
return 0;
});
lua.script("set_x(9)");
REQUIRE(x == 9);
}
TEST_CASE("advanced/call-referenced_obj", "A C++ object is passed by pointer/reference_wrapper to lua and invoked") {
sol::state lua;
int x = 0;
auto objx = [&](int new_x) {
x = new_x;
return 0;
};
lua.set_function("set_x", std::ref(objx));
int y = 0;
auto objy = [&](int new_y) {
y = new_y;
return std::tuple<int, int>(0, 0);
};
lua.set_function("set_y", &decltype(objy)::operator(), std::ref(objy));
lua.script("set_x(9)");
lua.script("set_y(9)");
REQUIRE(x == 9);
REQUIRE(y == 9);
}
TEST_CASE("negative/basic_errors", "Check if error handling works correctly") {
sol::state lua;
REQUIRE_THROWS(lua.script("nil[5]"));
}
TEST_CASE("libraries", "Check if we can open libraries") {
sol::state lua;
REQUIRE_NOTHROW(lua.open_libraries(sol::lib::base, sol::lib::os));
}
TEST_CASE("tables/variables", "Check if tables and variables work as intended") {
sol::state lua;
lua.open_libraries(sol::lib::base, sol::lib::os);
lua.get<sol::table>("os").set("name", "windows");
REQUIRE_NOTHROW(lua.script("assert(os.name == \"windows\")"));
}
TEST_CASE("tables/functions-variables", "Check if tables and function calls work as intended") {
sol::state lua;
lua.open_libraries(sol::lib::base, sol::lib::os);
auto run_script = [] (sol::state& lua) -> void {
lua.script("assert(os.fun() == \"test\")");
};
lua.get<sol::table>("os").set_function("fun",
[] () {
std::cout << "stateless lambda()" << std::endl;
return "test";
}
);
REQUIRE_NOTHROW(run_script(lua));
lua.get<sol::table>("os").set_function("fun", &free_function);
REQUIRE_NOTHROW(run_script(lua));
// l-value, canNOT optimise
// prefer value semantics unless wrapped with std::reference_wrapper
{
auto lval = object();
lua.get<sol::table>("os").set_function("fun", &object::operator(), lval);
}
REQUIRE_NOTHROW(run_script(lua));
auto reflval = object();
lua.get<sol::table>("os").set_function("fun", &object::operator(), std::ref(reflval));
REQUIRE_NOTHROW(run_script(lua));
// stateful lambda: non-convertible, cannot be optimised
int breakit = 50;
lua.get<sol::table>("os").set_function("fun",
[&breakit] () {
std::cout << "stateful lambda()" << std::endl;
return "test";
}
);
REQUIRE_NOTHROW(run_script(lua));
// r-value, cannot optimise
lua.get<sol::table>("os").set_function("fun", &object::operator(), object());
REQUIRE_NOTHROW(run_script(lua));
// r-value, cannot optimise
auto rval = object();
lua.get<sol::table>("os").set_function("fun", &object::operator(), std::move(rval));
REQUIRE_NOTHROW(run_script(lua));
}
TEST_CASE("functions/overload-resolution", "Check if overloaded function resolution templates compile/work") {
sol::state lua;
lua.open_libraries(sol::lib::base);
lua.set_function("non_overloaded", non_overloaded);
REQUIRE_NOTHROW(lua.script("x = non_overloaded(1, 2, 3)\nprint(x)"));
/*
// Cannot reasonably support: clang++ refuses to try enough
// deductions to make this work
lua.set_function<int>("overloaded", overloaded);
REQUIRE_NOTHROW(lua.script("print(overloaded(1))"));
lua.set_function<int, int>("overloaded", overloaded);
REQUIRE_NOTHROW(lua.script("print(overloaded(1, 2))"));
lua.set_function<int, int, int>("overloaded", overloaded);
REQUIRE_NOTHROW(lua.script("print(overloaded(1, 2, 3))"));
*/
lua.set_function<int(int)>("overloaded", overloaded);
REQUIRE_NOTHROW(lua.script("print(overloaded(1))"));
lua.set_function<int(int, int)>("overloaded", overloaded);
REQUIRE_NOTHROW(lua.script("print(overloaded(1, 2))"));
lua.set_function<int(int, int, int)>("overloaded", overloaded);
REQUIRE_NOTHROW(lua.script("print(overloaded(1, 2, 3))"));
}
TEST_CASE("functions/return-order-and-multi-get", "Check if return order is in the same reading order specified in Lua") {
const static std::tuple<int, int, int> triple = std::make_tuple(10, 11, 12);
const static std::tuple<int, float> paired = std::make_tuple(10, 10.f);
sol::state lua;
lua.set_function("f", [] {
return std::make_tuple(10, 11, 12);
} );
int a = 0;
lua.set_function( "h", []() {
return std::make_tuple( 10, 10.0f );
} );
lua.script("function g() return 10, 11, 12 end\nx,y,z = g()");
auto tcpp = lua.get<sol::function>("f").call<int, int, int>();
auto tlua = lua.get<sol::function>( "g" ).call<int, int, int>();
auto tcpp2 = lua.get<sol::function>( "h" ).call<int, float>();
auto tluaget = lua.get<int, int, int>( "x", "y", "z" );
REQUIRE(tcpp == triple);
REQUIRE(tlua == triple);
REQUIRE(tluaget == triple);
REQUIRE(tcpp2 == paired);
}
TEST_CASE("functions/deducing-return-order-and-multi-get", "Check if return order is in the same reading order specified in Lua, with regular deducing calls") {
const static std::tuple<int, int, int> triple = std::make_tuple(10, 11, 12);
sol::state lua;
lua.set_function( "f_string", []() { return "this is a string!"; } );
sol::function f_string = lua[ "f_string" ];
// Make sure there are no overload collisions / compiler errors for automatic string conversions
std::string f_string_result = f_string();
REQUIRE(f_string_result == "this is a string!");
f_string_result = f_string();
REQUIRE(f_string_result == "this is a string!");
lua.set_function("f", [] {
return std::make_tuple(10, 11, 12);
});
lua.script("function g() return 10, 11, 12 end\nx,y,z = g()");
std::tuple<int, int, int> tcpp = lua.get<sol::function>("f")();
std::tuple<int, int, int> tlua = lua.get<sol::function>("g")();
std::tuple<int, int, int> tluaget = lua.get<int, int, int>("x", "y", "z");
std::cout << "cpp: " << std::get<0>(tcpp) << ',' << std::get<1>(tcpp) << ',' << std::get<2>(tcpp) << std::endl;
std::cout << "lua: " << std::get<0>(tlua) << ',' << std::get<1>(tlua) << ',' << std::get<2>(tlua) << std::endl;
std::cout << "lua xyz: " << lua.get<int>("x") << ',' << lua.get<int>("y") << ',' << lua.get<int>("z") << std::endl;
REQUIRE(tcpp == triple);
REQUIRE(tlua == triple);
REQUIRE(tluaget == triple);
}
TEST_CASE("functions/sol::function-to-std::function", "check if conversion to std::function works properly and calls with correct arguments") {
sol::state lua;
lua.open_libraries(sol::lib::base);
lua.set_function("testFunc", test_free_func);
lua.set_function("testFunc2", test_free_func2);
lua.script(
"testFunc(function() print(\"hello std::function\") end)"
);
lua.script(
"function m(a)\n"
" print(\"hello std::function with arg \", a)\n"
" return a\n"
"end\n"
"\n"
"testFunc2(m, 1)"
);
}
TEST_CASE("functions/returning-functions-from-C++-and-gettin-in-lua", "check to see if returning a functor and getting a functor from lua is possible") {
sol::state lua;
lua.open_libraries(sol::lib::base);
lua.set_function("makefn", makefn);
lua.set_function("takefn", takefn);
lua.script("afx = makefn()\n"
"print(afx())\n"
"takefn(afx)\n");
}
TEST_CASE("tables/operator[]", "Check if operator[] retrieval and setting works properly") {
sol::state lua;
lua.open_libraries(sol::lib::base);
lua.script("foo = 20\nbar = \"hello world\"");
// basic retrieval
std::string bar = lua["bar"];
int foo = lua["foo"];
REQUIRE(bar == "hello world");
REQUIRE(foo == 20);
// test operator= for stringification
// errors due to ambiguous operators
bar = lua["bar"];
// basic setting
lua["bar"] = 20.4;
lua["foo"] = "goodbye";
// doesn't modify the actual values obviously.
REQUIRE(bar == "hello world");
REQUIRE(foo == 20);
// function setting
lua["test"] = plop_xyz;
REQUIRE_NOTHROW(lua.script("assert(test(10, 11, \"hello\") == 11)"));
// function retrieval
sol::function test = lua["test"];
REQUIRE(test.call<int>(10, 11, "hello") == 11);
// setting a lambda
lua["lamb"] = [](int x) {
return x * 2;
};
REQUIRE_NOTHROW(lua.script("assert(lamb(220) == 440)"));
// function retrieval of a lambda
sol::function lamb = lua["lamb"];
REQUIRE(lamb.call<int>(220) == 440);
// test const table retrieval
auto assert1 = [](const sol::table& t) {
std::string a = t["foo"];
double b = t["bar"];
REQUIRE(a == "goodbye");
REQUIRE(b == 20.4);
};
REQUIRE_NOTHROW(assert1(lua.global()));
}
TEST_CASE("tables/usertype", "Show that we can create classes from usertype and use them") {
sol::state lua;
sol::usertype<fuser> lc{ "add", &fuser::add, "add2", &fuser::add2 };
lua.set_usertype(lc);
lua.script("a = fuser:new()\n"
"b = a:add(1)\n"
"c = a:add2(1)\n");
sol::object a = lua.get<sol::object>("a");
sol::object b = lua.get<sol::object>("b");
sol::object c = lua.get<sol::object>("c");
REQUIRE((a.is<sol::userdata>()));
auto atype = a.get_type();
auto btype = b.get_type();
auto ctype = c.get_type();
REQUIRE((atype == sol::type::userdata));
REQUIRE((btype == sol::type::number));
REQUIRE((ctype == sol::type::number));
int bresult = b.as<int>();
int cresult = c.as<int>();
REQUIRE(bresult == 1);
REQUIRE(cresult == 3);
}
TEST_CASE("tables/usertype-constructors", "Show that we can create classes from usertype and use them with multiple constructors") {
sol::state lua;
sol::constructors<sol::types<>, sol::types<int>, sol::types<int, int>> con;
sol::usertype<crapola::fuser> lc(con, "add", &crapola::fuser::add, "add2", &crapola::fuser::add2);
lua.set_usertype(lc);
lua.script(
"a = crapola_fuser.new(2)\n"
"u = a:add(1)\n"
"v = a:add2(1)\n"
"b = crapola_fuser:new()\n"
"w = b:add(1)\n"
"x = b:add2(1)\n"
"c = crapola_fuser.new(2, 3)\n"
"y = c:add(1)\n"
"z = c:add2(1)\n");
sol::object a = lua.get<sol::object>("a");
auto atype = a.get_type();
REQUIRE((atype == sol::type::userdata));
sol::object u = lua.get<sol::object>("u");
sol::object v = lua.get<sol::object>("v");
REQUIRE((u.as<int>() == 3));
REQUIRE((v.as<int>() == 5));
sol::object b = lua.get<sol::object>("b");
auto btype = b.get_type();
REQUIRE((btype == sol::type::userdata));
sol::object w = lua.get<sol::object>("w");
sol::object x = lua.get<sol::object>("x");
REQUIRE((w.as<int>() == 1));
REQUIRE((x.as<int>() == 3));
sol::object c = lua.get<sol::object>("c");
auto ctype = c.get_type();
REQUIRE((ctype == sol::type::userdata));
sol::object y = lua.get<sol::object>("y");
sol::object z = lua.get<sol::object>("z");
REQUIRE((y.as<int>() == 7));
REQUIRE((z.as<int>() == 9));
}
TEST_CASE("tables/usertype-utility", "Show internal management of classes registered through new_usertype") {
sol::state lua;
lua.new_usertype<fuser>("fuser", "add", &fuser::add, "add2", &fuser::add2);
lua.script("a = fuser.new()\n"
"b = a:add(1)\n"
"c = a:add2(1)\n");
sol::object a = lua.get<sol::object>("a");
sol::object b = lua.get<sol::object>("b");
sol::object c = lua.get<sol::object>("c");
REQUIRE((a.is<sol::userdata>()));
auto atype = a.get_type();
auto btype = b.get_type();
auto ctype = c.get_type();
REQUIRE((atype == sol::type::userdata));
REQUIRE((btype == sol::type::number));
REQUIRE((ctype == sol::type::number));
int bresult = b.as<int>();
int cresult = c.as<int>();
REQUIRE(bresult == 1);
REQUIRE(cresult == 3);
}
TEST_CASE("tables/usertype-utility-derived", "usertype classes must play nice when a derived class does not overload a publically visible base function") {
sol::state lua;
lua.open_libraries(sol::lib::base);
sol::constructors<sol::types<int>> basector;
sol::usertype<Base> baseusertype(basector, "get_num", &Base::get_num);
lua.set_usertype(baseusertype);
lua.script("base = Base.new(5)");
REQUIRE_NOTHROW(lua.script("print(base:get_num())"));
sol::constructors<sol::types<int>> derivedctor;
sol::usertype<Derived> derivedusertype(derivedctor,
"get_num_10", &Derived::get_num_10,
"get_num", &Derived::get_num
);
lua.set_usertype(derivedusertype);
lua.script("derived = Derived.new(7)");
Derived& derived = lua["derived"];
lua.script("dgn = derived:get_num()\n"
"print(dgn)");
lua.script("dgn10 = derived:get_num_10()\n"
"print(dgn10)");
REQUIRE((lua.get<int>("dgn10") == 70));
REQUIRE((lua.get<int>("dgn") == 7));
}
TEST_CASE("tables/self-referential usertype", "usertype classes must play nice when C++ object types are requested for C++ code") {
sol::state lua;
lua.open_libraries(sol::lib::base);
lua.new_usertype<self_test>("test", "g", &self_test::g, "f", &self_test::f);
lua.script(
"local a = test.new()\n"
"a:g(\"woof\")\n"
"a:f(a)\n"
);
}
TEST_CASE("tables/arbitrary-creation", "tables should be created from standard containers") {
sol::state lua;
lua.open_libraries(sol::lib::base);
lua.set_function("test_one", test_table_return_one);
lua.set_function("test_two", test_table_return_two);
lua.set_function("test_three", test_table_return_three);
REQUIRE_NOTHROW(lua.script("a = test_one()"));
REQUIRE_NOTHROW(lua.script("b = test_two()"));
REQUIRE_NOTHROW(lua.script("c = test_three()"));
REQUIRE_NOTHROW(lua.script("assert(#a == 10, 'error')"));
REQUIRE_NOTHROW(lua.script("assert(a[3] == 3, 'error')"));
REQUIRE_NOTHROW(lua.script("assert(b.one == 1, 'error')"));
REQUIRE_NOTHROW(lua.script("assert(b.three == 3, 'error')"));
REQUIRE_NOTHROW(lua.script("assert(c.name == 'Rapptz', 'error')"));
REQUIRE_NOTHROW(lua.script("assert(c.project == 'sol', 'error')"));
auto&& a = lua.get<sol::table>("a");
auto&& b = lua.get<sol::table>("b");
auto&& c = lua.get<sol::table>("c");
REQUIRE(a.size() == 10ULL);
REQUIRE(a.get<int>(3) == 3);
REQUIRE(b.get<int>("one") == 1);
REQUIRE(b.get<int>("three") == 3);
REQUIRE(c.get<std::string>("name") == "Rapptz");
REQUIRE(c.get<std::string>("project") == "sol");
}
TEST_CASE("tables/for-each", "Testing the use of for_each to get values from a lua table") {
sol::state lua;
lua.open_libraries(sol::lib::base);
lua.script("arr = {\n"
"[0] = \"Hi\",\n"
"[1] = 123.45,\n"
"[2] = \"String value\",\n"
// Does nothing
//"[3] = nil,\n"
//"[nil] = 3,\n"
"[\"WOOF\"] = 123,\n"
"}");
sol::table tbl = lua[ "arr" ];
std::size_t tablesize = 4;
std::size_t iterations = 0;
tbl.for_each(
[&iterations](sol::object key, sol::object value) {
++iterations;
sol::type keytype = key.get_type();
switch (keytype) {
case sol::type::number:
switch (key.as<int>()) {
case 0:
REQUIRE((value.as<std::string>() == "Hi"));
break;
case 1:
REQUIRE((value.as<double>() == 123.45));
break;
case 2:
REQUIRE((value.as<std::string>() == "String value"));
break;
case 3:
REQUIRE((value.is<sol::nil_t>()));
break;
}
break;
case sol::type::string:
if (key.as<std::string>() == "WOOF") {
REQUIRE((value.as<double>() == 123));
}
break;
case sol::type::nil:
REQUIRE((value.as<double>() == 3));
break;
default:
break;
}
}
);
REQUIRE(iterations == tablesize);
}
TEST_CASE("tables/issue-number-twenty-five", "Using pointers and references from C++ classes in Lua") {
struct test {
int x = 0;
test& set() {
x = 10;
return *this;
}
int get() {
return x;
}
test* pget() {
return this;
}
test create_get() {
return *this;
}
int fun(int xa) {
return xa * 10;
}
};
sol::state lua;
lua.open_libraries(sol::lib::base);
lua.new_usertype<test>("test", "set", &test::set, "get", &test::get, "pointer_get", &test::pget, "fun", &test::fun, "create_get", &test::create_get);
REQUIRE_NOTHROW(lua.script("x = test.new()"));
REQUIRE_NOTHROW(lua.script("assert(x:set():get() == 10)"));
REQUIRE_NOTHROW(lua.script("y = x:pointer_get()"));
REQUIRE_NOTHROW(lua.script("y:set():get()"));
REQUIRE_NOTHROW(lua.script("y:fun(10)"));
REQUIRE_NOTHROW(lua.script("x:fun(10)"));
REQUIRE_NOTHROW(lua.script("assert(y:fun(10) == x:fun(10), '...')"));
REQUIRE_NOTHROW(lua.script("assert(y:fun(10) == 100, '...')"));
REQUIRE_NOTHROW(lua.script("assert(y:set():get() == y:set():get(), '...')"));
REQUIRE_NOTHROW(lua.script("assert(y:set():get() == 10, '...')"));
}
TEST_CASE("usertype/issue-number-thirty-five", "using value types created from lua-called C++ code, fixing user-defined types with constructors") {
sol::state lua;
lua.open_libraries(sol::lib::base);
sol::constructors<sol::types<float, float, float>> ctor;
sol::usertype<Vec> udata(ctor, "normalized", &Vec::normalized, "length", &Vec::length);
lua.set_usertype(udata);
REQUIRE_NOTHROW(lua.script("v = Vec.new(1, 2, 3)\n"
"print(v:length())"));
REQUIRE_NOTHROW(lua.script("v = Vec.new(1, 2, 3)\n"
"print(v:normalized():length())" ));
}
TEST_CASE("usertype/lua-stored-usertype", "ensure usertype values can be stored without keeping usertype object alive") {
sol::state lua;
lua.open_libraries(sol::lib::base);
{
sol::constructors<sol::types<float, float, float>> ctor;
sol::usertype<Vec> udata(ctor,
"normalized", &Vec::normalized,
"length", &Vec::length);
lua.set_usertype(udata);
// usertype dies, but still usable in lua!
}
REQUIRE_NOTHROW(lua.script("collectgarbage()\n"
"v = Vec.new(1, 2, 3)\n"
"print(v:length())"));
REQUIRE_NOTHROW(lua.script("v = Vec.new(1, 2, 3)\n"
"print(v:normalized():length())" ));
}
TEST_CASE("usertype/member-variables", "allow table-like accessors to behave as member variables for usertype") {
sol::state lua;
lua.open_libraries(sol::lib::base);
sol::constructors<sol::types<float, float, float>> ctor;
sol::usertype<Vec> udata(ctor,
"x", &Vec::x,
"y", &Vec::y,
"z", &Vec::z,
"normalized", &Vec::normalized,
"length", &Vec::length);
lua.set_usertype(udata);
REQUIRE_NOTHROW(lua.script("v = Vec.new(1, 2, 3)\n"
"v2 = Vec.new(0, 1, 0)\n"
"print(v:length())\n"
));
REQUIRE_NOTHROW(lua.script("v.x = 2\n"
"v2.y = 2\n"
"print(v.x, v.y, v.z)\n"
"print(v2.x, v2.y, v2.z)\n"
));
REQUIRE_NOTHROW(lua.script("assert(v.x == 2)\n"
"assert(v2.x == 0)\n"
"assert(v2.y == 2)\n"
));
REQUIRE_NOTHROW(lua.script("v.x = 3\n"
"local x = v.x\n"
"assert(x == 3)\n"
));
}
TEST_CASE("usertype/nonmember-functions", "let users set non-member functions that take unqualified T as first parameter to usertype") {
sol::state lua;
lua.open_libraries( sol::lib::base );
lua.new_usertype<giver>( "giver",
"gief_stuff", giver::gief_stuff,
"gief", &giver::gief,
"__tostring", [](const giver& t) {
return std::to_string(t.a) + ": giving value";
}
).get<sol::table>( "giver" )
.set_function( "stuff", giver::stuff );
REQUIRE_NOTHROW(lua.script("giver.stuff()"));
REQUIRE_NOTHROW(lua.script("t = giver.new()\n"
"print(tostring(t))\n"
"t:gief()\n"
"t:gief_stuff(20)\n"));
REQUIRE((lua.get<giver>("t").a == 20));
}
TEST_CASE("regressions/one", "issue number 48") {
sol::state lua;
lua.new_usertype<vars>("vars",
"boop", &vars::boop);
REQUIRE_NOTHROW(lua.script("beep = vars.new()\n"
"beep.boop = 1"));
// test for segfault
auto my_var = lua.get<vars>("beep");
REQUIRE(my_var.boop == 1);
auto* ptr = &my_var;
REQUIRE(ptr->boop == 1);
}
TEST_CASE("references/get-set", "properly get and set with std::ref semantics. Note that to get, we must not use Unqualified<T> on the type...") {
sol::state lua;
lua.new_usertype<vars>("vars",
"boop", &vars::boop);
vars var{};
vars rvar{};
lua.set("beep", var);
lua.set("rbeep", std::ref(rvar));
auto& my_var = lua.get<vars>("beep");
auto& ref_var = lua.get<std::reference_wrapper<vars>>("rbeep");
vars& proxy_my_var = lua["beep"];
std::reference_wrapper<vars> proxy_ref_var = lua["rbeep"];
var.boop = 2;
rvar.boop = 5;
// Was return as a value: var must be diferent from "beep"
REQUIRE_FALSE(std::addressof(var) == std::addressof(my_var));
REQUIRE_FALSE(std::addressof(proxy_my_var) == std::addressof(var));
REQUIRE((my_var.boop == 0));
REQUIRE(var.boop != my_var.boop);
REQUIRE(std::addressof(ref_var) == std::addressof(rvar));
REQUIRE(std::addressof(proxy_ref_var.get()) == std::addressof(rvar));
REQUIRE(rvar.boop == 5);
REQUIRE(rvar.boop == ref_var.boop);
}
TEST_CASE("interop/null-to-nil-and-back", "nil should be the given type when a pointer from C++ is returned as nullptr, and nil should result in nullptr in connected C++ code") {
sol::state lua;
lua.open_libraries(sol::lib::base);
lua.set_function("lol", []() -> int* {
return nullptr;
});
lua.set_function("rofl", [](int* x) {
std::cout << x << std::endl;
});
REQUIRE_NOTHROW(lua.script("x = lol()\n"
"rofl(x)\n"
"assert(x == nil)"));
}
TEST_CASE( "functions/function_result-protected_function_result", "Function result should be the beefy return type for sol::function that allows for error checking and error handlers" ) {
sol::state lua;
lua.open_libraries( sol::lib::base, sol::lib::debug );
static const char unhandlederrormessage[] = "true error message";
static const char handlederrormessage[] = "doodle";
// Some function; just using a lambda to be cheap
auto doomfx = []() {
std::cout << "doomfx called" << std::endl;
throw std::runtime_error( unhandlederrormessage );
};
auto luadoomfx = [&lua]() {
std::cout << "luadoomfx called" << std::endl;
// Does not bypass error function, will call it
luaL_error( lua.lua_state(), unhandlederrormessage );
};
lua.set_function("doom", doomfx);
lua.set_function("luadoom", luadoomfx);
auto cpphandlerfx = []( std::string x ) {
std::cout << "c++ handler called with: " << x << std::endl;
return handlederrormessage;
};
lua.set_function( "cpphandler", cpphandlerfx );
lua.script(
std::string( "function luahandler ( message )" )
+ " print('lua handler called with: ' .. message)"
+ " return '" + handlederrormessage + "'"
+ "end"
);
lua.set("nontrampoline", (lua_CFunction)[](lua_State*) -> int { throw "x";});
sol::protected_function doom = lua[ "doom" ];
sol::protected_function luadoom = lua["luadoom"];
sol::protected_function nontrampoline = lua["nontrampoline"];
sol::function luahandler = lua["luahandler"];
sol::function cpphandler = lua[ "cpphandler" ];
doom.error_handler = luahandler;
luadoom.error_handler = cpphandler;
nontrampoline.error_handler = cpphandler;
{
sol::protected_function_result result = doom();
REQUIRE(!result.valid());
std::string errorstring = result;
REQUIRE(errorstring == handlederrormessage);
}
{
sol::protected_function_result result = luadoom();
REQUIRE(!result.valid());
std::string errorstring = result;
REQUIRE(errorstring == handlederrormessage);
}
{
sol::protected_function_result result = nontrampoline();
REQUIRE(!result.valid());
std::string errorstring = result;
REQUIRE(errorstring == handlederrormessage);
}
}
TEST_CASE("functions/destructor-tests", "Show that proper copies / destruction happens") {
static int created = 0;
static int destroyed = 0;
static void* last_call = nullptr;
static void* static_call = reinterpret_cast<void*>(0x01);
typedef void(* fptr)();
struct x {
x() {++created;}
x(const x&) {++created;}
x(x&&) {++created;}
x& operator=(const x&) {return *this;}
x& operator=(x&&) {return *this;}
void func() {last_call = static_cast<void*>(this);};
~x () {++destroyed;}
};
struct y {
y() {++created;}
y(const x&) {++created;}
y(x&&) {++created;}
y& operator=(const x&) {return *this;}
y& operator=(x&&) {return *this;}
static void func() {last_call = static_call;};
void operator()() {func();}
operator fptr () { return func; }
~y () {++destroyed;}
};
// stateful functors/member functions should always copy unless specified
{
created = 0;
destroyed = 0;
last_call = nullptr;
{
sol::state lua;
x x1;
lua.set_function("x1copy", &x::func, x1);
lua.script("x1copy()");
REQUIRE(created == 2);
REQUIRE(destroyed == 0);
REQUIRE_FALSE(last_call == &x1);
lua.set_function("x1ref", &x::func, std::ref(x1));
lua.script("x1ref()");
REQUIRE(created == 2);
REQUIRE(destroyed == 0);
REQUIRE(last_call == &x1);
}
REQUIRE(created == 2);
REQUIRE(destroyed == 2);
REQUIRE(created == destroyed);
}
// things convertible to a static function should _never_ be forced to make copies
// therefore, pass through untouched
{
created = 0;
destroyed = 0;
last_call = nullptr;
{
sol::state lua;
y y1;
lua.set_function("y1copy", y1);
lua.script("y1copy()");
REQUIRE(created == 1);
REQUIRE(destroyed == 0);
REQUIRE(last_call == static_call);
last_call = nullptr;
lua.set_function("y1ref", std::ref(y1));
lua.script("y1ref()");
REQUIRE(created == 1);
REQUIRE(destroyed == 0);
REQUIRE(last_call == static_call);
}
REQUIRE(created == 1);
REQUIRE(destroyed == 1);
}
}
TEST_CASE("usertype/destructor-tests", "Show that proper copies / destruction happens") {
static int created = 0;
static int destroyed = 0;
static void* last_call = nullptr;
struct x {
x() {++created;}
x(const x&) {++created;}
x(x&&) {++created;}
x& operator=(const x&) {return *this;}
x& operator=(x&&) {return *this;}
~x () {++destroyed;}
};
{
sol::state lua;
lua.new_usertype<x>("x");
x x1;
x x2;
lua.set("x1copy", x1, "x2copy", x2, "x1ref", std::ref(x1));
x& x1copyref = lua["x1copy"];
x& x2copyref = lua["x2copy"];
x& x1ref = lua["x1ref"];
REQUIRE(created == 4);
REQUIRE(destroyed == 0);
REQUIRE(std::addressof(x1) == std::addressof(x1ref));
}
REQUIRE(created == 4);
REQUIRE(destroyed == 4);
REQUIRE(created == destroyed);
}
TEST_CASE("functions/overloading", "Check if overloading works properly for regular set function syntax") {
sol::state lua;
lua.open_libraries(sol::lib::base);
lua.set_function("func_1", func_1);
lua.set_function("func", sol::overload(func_1, func_1s, func_2, func_3));
const std::string string_bark = "string: bark";
REQUIRE_NOTHROW(lua.script(
"a = func(1)\n"
"b = func('bark')\n"
"c = func(1,2)\n"
"func(1,2,3)\n"
));
REQUIRE((lua["a"] == 1));
REQUIRE((lua["b"] == string_bark));
REQUIRE((lua["c"] == 2));
REQUIRE_THROWS(lua.script("func(1,2,'meow')"));
}
TEST_CASE("usertype/private-constructible", "Check to make sure special snowflake types from Enterprise thingamahjongs work properly.") {
int numsaved = factory_test::num_saved;
int numkilled = factory_test::num_killed;
{
sol::state lua;
lua.open_libraries(sol::lib::base);
lua.new_usertype<factory_test>("factory_test",
"new", sol::constructor(factory_test::save),
"__gc", sol::destructor(factory_test::kill),
"a", &factory_test::a
);
std::unique_ptr<factory_test, factory_test::deleter> f = factory_test::make();
lua.set("true_a", factory_test::true_a, "f", f.get());
REQUIRE_NOTHROW(lua.script("assert(f.a == true_a)"));
REQUIRE_NOTHROW(lua.script(
"local fresh_f = factory_test:new()\n"
"assert(fresh_f.a == true_a)\n"));
}
int expectednumsaved = numsaved + 1;
int expectednumkilled = numkilled + 1;
REQUIRE(expectednumsaved == factory_test::num_saved);
REQUIRE(expectednumkilled == factory_test::num_killed);
}
TEST_CASE("usertype/overloading", "Check if overloading works properly for usertypes") {
struct woof {
int var;
int func(int x) {
return var + x;
}
double func2(int x, int y) {
return var + x + y + 0.5;
}
std::string func2s(int x, std::string y) {
return y + " " + std::to_string(x);
}
};
sol::state lua;
lua.open_libraries(sol::lib::base);
lua.new_usertype<woof>("woof",
"var", &woof::var,
"func", sol::overload(&woof::func, &woof::func2, &woof::func2s)
);
const std::string bark_58 = "bark 58";
REQUIRE_NOTHROW(lua.script(
"r = woof:new()\n"
"a = r:func(1)\n"
"b = r:func(1, 2)\n"
"c = r:func(58, 'bark')\n"
));
REQUIRE((lua["a"] == 1));
REQUIRE((lua["b"] == 3.5));
REQUIRE((lua["c"] == bark_58));
REQUIRE_THROWS(lua.script("r:func(1,2,'meow')"));
}
TEST_CASE("threading/coroutines", "ensure calling a coroutine works") {
const auto& script = R"(counter = 20
function loop()
while counter ~= 30
do
coroutine.yield(counter);
counter = counter + 1;
end
return counter
end
)";
sol::state lua;
lua.open_libraries(sol::lib::base, sol::lib::coroutine);
lua.script(script);
sol::coroutine cr = lua["loop"];
int counter;
for (counter = 20; counter < 31 && cr; ++counter) {
int value = cr();
if (counter != value) {
throw std::logic_error("fuck");
}
}
counter -= 1;
REQUIRE(counter == 30);
}
TEST_CASE("threading/new-thread-coroutines", "ensure calling a coroutine works when the work is put on a different thread") {
const auto& script = R"(counter = 20
function loop()
while counter ~= 30
do
coroutine.yield(counter);
counter = counter + 1;
end
return counter
end
)";
sol::state lua;
lua.open_libraries(sol::lib::base, sol::lib::coroutine);
lua.script(script);
sol::thread runner = sol::thread::create(lua.lua_state());
sol::state_view runnerstate = runner.state();
sol::coroutine cr = lua["loop"];
int counter;
for (counter = 20; counter < 31 && cr; ++counter) {
int value = cr();
if (counter != value) {
throw std::logic_error("fuck");
}
}
counter -= 1;
REQUIRE(counter == 30);
}
TEST_CASE("issues/stack-overflow", "make sure various operations repeated don't trigger stack overflow") {
sol::state lua;
lua.script("t = {};t[0]=20");
lua.script("lua_function=function(i)return i;end");
sol::function f = lua["lua_function"];
std::string teststring = "testtext";
REQUIRE_NOTHROW(
for (int i = 0; i < 1000000; ++i) {
std::string result = f(teststring);
if (result != teststring) throw std::logic_error("RIP");
}
);
sol::table t = lua["t"];
int expected = 20;
REQUIRE_NOTHROW(
for (int i = 0; i < 1000000; ++i) {
int result = t[0];
t.size();
if (result != expected)
throw std::logic_error("RIP");
}
);
}
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