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/* Copyright (C) 2025 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* 0 A.D. is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
#include "lib/self_test.h"
#include "lib/file/vfs/vfs.h"
#include "lib/path.h"
#include "ps/CLogger.h"
#include "ps/Filesystem.h"
#include "scriptinterface/FunctionWrapper.h"
#include "scriptinterface/ModuleLoader.h"
#include "scriptinterface/ScriptInterface.h"
#include "scriptinterface/ScriptRequest.h"
#include <functional>
#include <js/CallArgs.h>
#include <js/RootingAPI.h>
#include <js/TypeDecls.h>
#include <js/Value.h>
#include <stdexcept>
#include <string>
#include <tuple>
#include <type_traits>
class TestFunctionWrapper : public CxxTest::TestSuite
{
public:
// TODO C++20: use lambda functions directly, names are 'N params, void/returns'.
static void _1p_v(int) {};
static void _3p_v(int, bool, std::string) {};
static int _3p_r(int a, bool, std::string) { return a; };
static void _0p_v() {};
static int _0p_r() { return 1; };
void test_simple_wrappers()
{
static_assert(std::is_same_v<decltype(&ScriptFunction::ToJSNative<&TestFunctionWrapper::_1p_v>), JSNative>);
static_assert(std::is_same_v<decltype(&ScriptFunction::ToJSNative<&TestFunctionWrapper::_3p_v>), JSNative>);
static_assert(std::is_same_v<decltype(&ScriptFunction::ToJSNative<&TestFunctionWrapper::_3p_r>), JSNative>);
static_assert(std::is_same_v<decltype(&ScriptFunction::ToJSNative<&TestFunctionWrapper::_0p_v>), JSNative>);
static_assert(std::is_same_v<decltype(&ScriptFunction::ToJSNative<&TestFunctionWrapper::_0p_r>), JSNative>);
}
static void _handle(JS::HandleValue) {};
static void _handle_2(int, JS::HandleValue, bool) {};
static void _script_interface(const ScriptInterface&) {};
static int _script_interface_2(const ScriptInterface&, int a, bool) { return a; };
static void _script_request(const ScriptRequest&) {};
static int _script_request_2(const ScriptRequest&, int a, bool) { return a; };
void test_special_wrappers()
{
static_assert(std::is_same_v<decltype(&ScriptFunction::ToJSNative<&TestFunctionWrapper::_handle>), JSNative>);
static_assert(std::is_same_v<decltype(&ScriptFunction::ToJSNative<&TestFunctionWrapper::_handle_2>), JSNative>);
static_assert(std::is_same_v<decltype(&ScriptFunction::ToJSNative<&TestFunctionWrapper::_script_interface>), JSNative>);
static_assert(std::is_same_v<decltype(&ScriptFunction::ToJSNative<&TestFunctionWrapper::_script_interface_2>), JSNative>);
static_assert(std::is_same_v<decltype(&ScriptFunction::ToJSNative<&TestFunctionWrapper::_script_request>), JSNative>);
static_assert(std::is_same_v<decltype(&ScriptFunction::ToJSNative<&TestFunctionWrapper::_script_request_2>), JSNative>);
}
class test_method
{
public:
void method_1() {};
int method_2(int, const int&) { return 4; };
void const_method_1() const {};
int const_method_2(int, const int&) const { return 4; };
};
void test_method_wrappers()
{
static_assert(std::is_same_v<decltype(&ScriptFunction::ToJSNative<&TestFunctionWrapper::test_method::method_1,
&ScriptInterface::ObjectFromCBData<test_method>>), JSNative>);
static_assert(std::is_same_v<decltype(&ScriptFunction::ToJSNative<&TestFunctionWrapper::test_method::method_2,
&ScriptInterface::ObjectFromCBData<test_method>>), JSNative>);
static_assert(std::is_same_v<decltype(&ScriptFunction::ToJSNative<&TestFunctionWrapper::test_method::const_method_1,
&ScriptInterface::ObjectFromCBData<test_method>>), JSNative>);
static_assert(std::is_same_v<decltype(&ScriptFunction::ToJSNative<&TestFunctionWrapper::test_method::const_method_2,
&ScriptInterface::ObjectFromCBData<test_method>>), JSNative>);
}
void test_calling()
{
ScriptInterface script("Test", "Test", g_ScriptContext);
ScriptRequest rq(script);
ScriptFunction::Register<&TestFunctionWrapper::_1p_v>(script, "_1p_v");
{
std::string input = "Test._1p_v(0);";
JS::RootedValue val(rq.cx);
TS_ASSERT(script.Eval(input.c_str(), &val));
}
ScriptFunction::Register<&TestFunctionWrapper::_3p_r>(script, "_3p_r");
{
std::string input = "Test._3p_r(4, false, 'test');";
int ret = 0;
TS_ASSERT(script.Eval(input.c_str(), ret));
TS_ASSERT_EQUALS(ret, 4);
}
ScriptFunction::Register<&TestFunctionWrapper::_script_interface_2>(script, "_cmpt_private_2");
{
std::string input = "Test._cmpt_private_2(4);";
int ret = 0;
TS_ASSERT(script.Eval(input.c_str(), ret));
TS_ASSERT_EQUALS(ret, 4);
}
}
void test_statefull()
{
ScriptInterface script{"Test", "Test", g_ScriptContext};
const ScriptRequest rq{script};
JS::RootedValue nativeScope{rq.cx, JS::ObjectValue(*rq.nativeScope)};
constexpr const char* name{"callback"};
{
bool called{false};
auto _ = ScriptFunction::Register(rq, name, [&](){
called = true;
});
TS_ASSERT(!called);
TS_ASSERT(ScriptFunction::CallVoid(rq, nativeScope, name));
TS_ASSERT(called);
}
TS_ASSERT(!ScriptFunction::CallVoid(rq, nativeScope, name));
}
void test_exception()
{
g_VFS = CreateVfs();
TS_ASSERT_OK(g_VFS->Mount(L"", DataDir() / "mods" / "_test.scriptinterface" / "exception" / "",
VFS_MOUNT_MUST_EXIST));
ScriptInterface script{"Engine", "Test", g_ScriptContext, [](const VfsPath&){
return true;
}};
const ScriptRequest rq{script};
auto _ = ScriptFunction::Register(rq, "callback", [&](){
throw std::runtime_error{"Testerror"};
});
TestLogger logger;
std::ignore = script.GetModuleLoader().LoadModule(rq, "catch.js");
TS_ASSERT_STR_CONTAINS(logger.GetOutput(), "Testerror");
g_VFS.reset();
}
};
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