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[Lua] Add memory usage test

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This commit is contained in:
Petr Mikheev 2023-02-26 10:55:01 +01:00
parent d0a82437a4
commit b0a6e4e510
1 changed files with 35 additions and 1 deletions
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36
apps/openmw_test_suite/lua/test_lua.cpp
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@ -51,10 +51,26 @@ return {
}
)X");
std::string genBigScript()
{
std::stringstream buf;
buf << "return function()\n";
buf << " x = {}\n";
for (int i = 0; i < 1000; ++i)
buf << " x[" << i * 2 << "] = " << i << "\n";
buf << " return x\n";
buf << "end\n";
return buf.str();
}
TestingOpenMW::VFSTestFile bigScriptFile(genBigScript());
TestingOpenMW::VFSTestFile requireBigScriptFile("local x = require('big') ; return {x}");
struct LuaStateTest : Test
{
std::unique_ptr<VFS::Manager> mVFS = TestingOpenMW::createTestVFS({ { "aaa/counter.lua", &counterFile },
{ "bbb/tests.lua", &testsFile }, { "invalid.lua", &invalidScriptFile } });
{ "bbb/tests.lua", &testsFile }, { "invalid.lua", &invalidScriptFile }, { "big.lua", &bigScriptFile },
{ "requireBig.lua", &requireBigScriptFile } });
LuaUtil::ScriptsConfiguration mCfg;
LuaUtil::LuaState mLua{ mVFS.get(), &mCfg };
@ -172,4 +188,22 @@ return {
EXPECT_THAT(LuaUtil::getLuaVersion(), HasSubstr("Lua"));
}
TEST_F(LuaStateTest, RemovedScriptsGarbageCollecting)
{
auto getMem = [&] {
for (int i = 0; i < 5; ++i)
lua_gc(mLua.sol(), LUA_GCCOLLECT, 0);
return mLua.getTotalMemoryUsage();
};
int64_t memWithScript;
{
sol::object s = mLua.runInNewSandbox("requireBig.lua");
memWithScript = getMem();
}
for (int i = 0; i < 100; ++i) // run many times to make small memory leaks visible
mLua.runInNewSandbox("requireBig.lua");
int64_t memWithoutScript = getMem();
// At this moment all instances of the script should be garbage-collected.
EXPECT_LT(memWithoutScript, memWithScript);
}
}