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#include <gmock/gmock.h>
#include <gtest/gtest.h>
#include <osg/Matrixf>
#include <osg/Quat>
#include <osg/Vec2f>
#include <osg/Vec3f>
#include <osg/Vec4f>
#include <components/lua/serialization.hpp>
#include <components/lua/utilpackage.hpp>
#include <components/misc/color.hpp>
#include <components/misc/endianness.hpp>
#include <components/testing/expecterror.hpp>
namespace
{
using namespace testing;
TEST(LuaSerializationTest, Nil)
{
sol::state lua;
EXPECT_EQ(LuaUtil::serialize(sol::nil), "");
EXPECT_EQ(LuaUtil::deserialize(lua, ""), sol::nil);
}
TEST(LuaSerializationTest, Number)
{
sol::state lua;
std::string serialized = LuaUtil::serialize(sol::make_object<double>(lua, 3.14));
EXPECT_EQ(serialized.size(), 10); // version, type, 8 bytes value
sol::object value = LuaUtil::deserialize(lua, serialized);
ASSERT_TRUE(value.is<double>());
EXPECT_DOUBLE_EQ(value.as<double>(), 3.14);
}
TEST(LuaSerializationTest, Boolean)
{
sol::state lua;
{
std::string serialized = LuaUtil::serialize(sol::make_object<bool>(lua, true));
EXPECT_EQ(serialized.size(), 3); // version, type, 1 byte value
sol::object value = LuaUtil::deserialize(lua, serialized);
EXPECT_FALSE(value.is<double>());
ASSERT_TRUE(value.is<bool>());
EXPECT_TRUE(value.as<bool>());
}
{
std::string serialized = LuaUtil::serialize(sol::make_object<bool>(lua, false));
EXPECT_EQ(serialized.size(), 3); // version, type, 1 byte value
sol::object value = LuaUtil::deserialize(lua, serialized);
EXPECT_FALSE(value.is<double>());
ASSERT_TRUE(value.is<bool>());
EXPECT_FALSE(value.as<bool>());
}
}
TEST(LuaSerializationTest, String)
{
sol::state lua;
std::string_view emptyString = "";
std::string_view shortString = "abc";
std::string_view longString = "It is a string with more than 32 characters...........................";
{
std::string serialized = LuaUtil::serialize(sol::make_object<std::string_view>(lua, emptyString));
EXPECT_EQ(serialized.size(), 2); // version, type
sol::object value = LuaUtil::deserialize(lua, serialized);
ASSERT_TRUE(value.is<std::string>());
EXPECT_EQ(value.as<std::string>(), emptyString);
}
{
std::string serialized = LuaUtil::serialize(sol::make_object<std::string_view>(lua, shortString));
EXPECT_EQ(serialized.size(), 2 + shortString.size()); // version, type, str data
sol::object value = LuaUtil::deserialize(lua, serialized);
ASSERT_TRUE(value.is<std::string>());
EXPECT_EQ(value.as<std::string>(), shortString);
}
{
std::string serialized = LuaUtil::serialize(sol::make_object<std::string_view>(lua, longString));
EXPECT_EQ(serialized.size(), 6 + longString.size()); // version, type, size, str data
sol::object value = LuaUtil::deserialize(lua, serialized);
ASSERT_TRUE(value.is<std::string>());
EXPECT_EQ(value.as<std::string>(), longString);
}
}
TEST(LuaSerializationTest, Vector)
{
sol::state lua;
osg::Vec2f vec2(1, 2);
osg::Vec3f vec3(1, 2, 3);
osg::Vec4f vec4(1, 2, 3, 4);
{
std::string serialized = LuaUtil::serialize(sol::make_object(lua, vec2));
EXPECT_EQ(serialized.size(), 18); // version, type, 2x double
sol::object value = LuaUtil::deserialize(lua, serialized);
ASSERT_TRUE(value.is<osg::Vec2f>());
EXPECT_EQ(value.as<osg::Vec2f>(), vec2);
}
{
std::string serialized = LuaUtil::serialize(sol::make_object(lua, vec3));
EXPECT_EQ(serialized.size(), 26); // version, type, 3x double
sol::object value = LuaUtil::deserialize(lua, serialized);
ASSERT_TRUE(value.is<osg::Vec3f>());
EXPECT_EQ(value.as<osg::Vec3f>(), vec3);
}
{
std::string serialized = LuaUtil::serialize(sol::make_object(lua, vec4));
EXPECT_EQ(serialized.size(), 34); // version, type, 4x double
sol::object value = LuaUtil::deserialize(lua, serialized);
ASSERT_TRUE(value.is<osg::Vec4f>());
EXPECT_EQ(value.as<osg::Vec4f>(), vec4);
}
}
TEST(LuaSerializationTest, Color)
{
sol::state lua;
Misc::Color color(1, 1, 1, 1);
{
std::string serialized = LuaUtil::serialize(sol::make_object(lua, color));
EXPECT_EQ(serialized.size(), 18); // version, type, 4x float
sol::object value = LuaUtil::deserialize(lua, serialized);
ASSERT_TRUE(value.is<Misc::Color>());
EXPECT_EQ(value.as<Misc::Color>(), color);
}
}
TEST(LuaSerializationTest, Transform)
{
sol::state lua;
osg::Matrixf matrix(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16);
LuaUtil::TransformM transM = LuaUtil::asTransform(matrix);
osg::Quat quat(1, 2, 3, 4);
LuaUtil::TransformQ transQ = LuaUtil::asTransform(quat);
{
std::string serialized = LuaUtil::serialize(sol::make_object(lua, transM));
EXPECT_EQ(serialized.size(), 130); // version, type, 16x double
sol::object value = LuaUtil::deserialize(lua, serialized);
ASSERT_TRUE(value.is<LuaUtil::TransformM>());
EXPECT_EQ(value.as<LuaUtil::TransformM>().mM, transM.mM);
}
{
std::string serialized = LuaUtil::serialize(sol::make_object(lua, transQ));
EXPECT_EQ(serialized.size(), 34); // version, type, 4x double
sol::object value = LuaUtil::deserialize(lua, serialized);
ASSERT_TRUE(value.is<LuaUtil::TransformQ>());
EXPECT_EQ(value.as<LuaUtil::TransformQ>().mQ, transQ.mQ);
}
}
TEST(LuaSerializationTest, Table)
{
sol::state lua;
sol::table table(lua, sol::create);
table["aa"] = 1;
table["ab"] = true;
table["nested"] = sol::table(lua, sol::create);
table["nested"]["aa"] = 2;
table["nested"]["bb"] = "something";
table["nested"][5] = -0.5;
table["nested_empty"] = sol::table(lua, sol::create);
table[1] = osg::Vec2f(1, 2);
table[2] = osg::Vec2f(2, 1);
std::string serialized = LuaUtil::serialize(table);
EXPECT_EQ(serialized.size(), 139);
sol::table resTable = LuaUtil::deserialize(lua, serialized);
sol::table resReadonlyTable = LuaUtil::deserialize(lua, serialized, nullptr, true);
for (auto t : { resTable, resReadonlyTable })
{
EXPECT_EQ(t.get<int>("aa"), 1);
EXPECT_EQ(t.get<bool>("ab"), true);
EXPECT_EQ(t.get<sol::table>("nested").get<int>("aa"), 2);
EXPECT_EQ(t.get<sol::table>("nested").get<std::string>("bb"), "something");
EXPECT_DOUBLE_EQ(t.get<sol::table>("nested").get<double>(5), -0.5);
EXPECT_EQ(t.get<osg::Vec2f>(1), osg::Vec2f(1, 2));
EXPECT_EQ(t.get<osg::Vec2f>(2), osg::Vec2f(2, 1));
}
lua["t"] = resTable;
lua["ro_t"] = resReadonlyTable;
EXPECT_NO_THROW(lua.safe_script("t.x = 5"));
EXPECT_NO_THROW(lua.safe_script("t.nested.x = 5"));
EXPECT_ERROR(lua.safe_script("ro_t.x = 5"), "userdata value");
EXPECT_ERROR(lua.safe_script("ro_t.nested.x = 5"), "userdata value");
}
struct TestStruct1
{
double a, b;
};
struct TestStruct2
{
int a, b;
};
class TestSerializer final : public LuaUtil::UserdataSerializer
{
bool serialize(LuaUtil::BinaryData& out, const sol::userdata& data) const override
{
if (data.is<TestStruct1>())
{
TestStruct1 t = data.as<TestStruct1>();
t.a = Misc::toLittleEndian(t.a);
t.b = Misc::toLittleEndian(t.b);
append(out, "ts1", &t, sizeof(t));
return true;
}
if (data.is<TestStruct2>())
{
TestStruct2 t = data.as<TestStruct2>();
t.a = Misc::toLittleEndian(t.a);
t.b = Misc::toLittleEndian(t.b);
append(out, "test_struct2", &t, sizeof(t));
return true;
}
return false;
}
bool deserialize(std::string_view typeName, std::string_view binaryData, lua_State* lua) const override
{
if (typeName == "ts1")
{
if (sizeof(TestStruct1) != binaryData.size())
throw std::runtime_error(
"Incorrect binaryData.size() for TestStruct1: " + std::to_string(binaryData.size()));
TestStruct1 t;
std::memcpy(&t, binaryData.data(), sizeof(t));
t.a = Misc::fromLittleEndian(t.a);
t.b = Misc::fromLittleEndian(t.b);
sol::stack::push<TestStruct1>(lua, t);
return true;
}
if (typeName == "test_struct2")
{
if (sizeof(TestStruct2) != binaryData.size())
throw std::runtime_error(
"Incorrect binaryData.size() for TestStruct2: " + std::to_string(binaryData.size()));
TestStruct2 t;
std::memcpy(&t, binaryData.data(), sizeof(t));
t.a = Misc::fromLittleEndian(t.a);
t.b = Misc::fromLittleEndian(t.b);
sol::stack::push<TestStruct2>(lua, t);
return true;
}
return false;
}
};
TEST(LuaSerializationTest, UserdataSerializer)
{
sol::state lua;
sol::table table(lua, sol::create);
table["x"] = TestStruct1{ 1.5, 2.5 };
table["y"] = TestStruct2{ 4, 3 };
TestSerializer serializer;
EXPECT_ERROR(LuaUtil::serialize(table), "Value is not serializable.");
std::string serialized = LuaUtil::serialize(table, &serializer);
EXPECT_ERROR(LuaUtil::deserialize(lua, serialized), "Unknown type in serialized data:");
sol::table res = LuaUtil::deserialize(lua, serialized, &serializer);
TestStruct1 rx = res.get<TestStruct1>("x");
TestStruct2 ry = res.get<TestStruct2>("y");
EXPECT_EQ(rx.a, 1.5);
EXPECT_EQ(rx.b, 2.5);
EXPECT_EQ(ry.a, 4);
EXPECT_EQ(ry.b, 3);
}
}
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