bitsery/tests/serialization_ext_std_tuple.cpp

//MIT License
//
//Copyright (c) 2019 Mindaugas Vinkelis
//
//Permission is hereby granted, free of charge, to any person obtaining a copy
//of this software and associated documentation files (the "Software"), to deal
//in the Software without restriction, including without limitation the rights
//to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//copies of the Software, and to permit persons to whom the Software is
//furnished to do so, subject to the following conditions:
//
//The above copyright notice and this permission notice shall be included in all
//copies or substantial portions of the Software.
//
//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//SOFTWARE.

#include <gmock/gmock.h>
#include "serialization_test_utils.h"

using testing::Eq;

#if __cplusplus > 201402L

#include <bitsery/ext/std_tuple.h>

template<typename T, size_t N>
using OverloadValue = bitsery::ext::OverloadValue<T, N>;

TEST(SerializeExtensionStdTuple, UseDefaultSerializeFunction) {
    std::tuple<MyStruct1, MyStruct2> t1{MyStruct1{-789, 45}, MyStruct2{MyStruct2::MyEnum::V3, MyStruct1{}}};
    std::tuple<MyStruct1, MyStruct2> r1{};
    SerializationContext ctx;
    ctx.createSerializer().ext(t1, bitsery::ext::StdTuple{});
    ctx.createDeserializer().ext(r1, bitsery::ext::StdTuple{});
    EXPECT_THAT(t1, Eq(r1));
}

TEST(SerializeExtensionStdTuple, ValueTypesCanBeSerializedWithLambdaAndOrCallableObject) {
    std::tuple<float, int32_t> t1{123.456f, -898754656};
    std::tuple<float, int32_t> r1{};
    SerializationContext ctx;
    auto exec = [](auto& s, auto& o) {
        using S = decltype(s);
        s.ext(o, bitsery::ext::StdTuple{
            [](auto& s1, float& o1) {
                s1.value4b(o1);
            },
            OverloadValue<int32_t, 4>{}
        });
    };
    exec(ctx.createSerializer(), t1);
    exec(ctx.createDeserializer(), r1);
    EXPECT_THAT(t1, Eq(r1));
}

TEST(SerializeExtensionStdTuple, CanOverloadDefaultSerializeFunction) {
    std::tuple<MyStruct1, MyStruct2> t1{MyStruct1{-789, 45}, MyStruct2{MyStruct2::MyEnum::V3, MyStruct1{}}};
    std::tuple<MyStruct1, MyStruct2> r1{};
    SerializationContext ctx;
    auto exec = [](auto& s, auto& o) {
        using S = decltype(s);
        s.ext(o, bitsery::ext::StdTuple{
            [](auto& s1, MyStruct1& o1) {
                s1.value4b(o1.i1);
                //do not serialize other element, it should be 0 (default)
            },
        });
    };
    exec(ctx.createSerializer(), t1);
    exec(ctx.createDeserializer(), r1);
    EXPECT_THAT(std::get<1>(t1), Eq(std::get<1>(r1)));
    EXPECT_THAT(std::get<0>(t1).i1, Eq(std::get<0>(r1).i1));
    EXPECT_THAT(std::get<0>(t1).i2, ::testing::Ne(std::get<0>(r1).i2));
}

TEST(SerializeExtensionStdTuple, EmptyTuple) {
    std::tuple<> t1{};
    std::tuple<> r1{};
    SerializationContext ctx;
    ctx.createSerializer().ext(t1, bitsery::ext::StdTuple{});
    ctx.createDeserializer().ext(r1, bitsery::ext::StdTuple{});
    EXPECT_THAT(t1, Eq(r1));
}

struct NonDefaultConstructable {
    explicit NonDefaultConstructable(float x) : _x{x} {}

    float _x;

    bool operator==(const NonDefaultConstructable& rhs) const {
        return _x == rhs._x;
    }

private:
    friend class bitsery::Access;

    NonDefaultConstructable() : _x{0.0f} {};
};

TEST(SerializeExtensionStdTuple, NonDefaultConstructable) {
    std::tuple<NonDefaultConstructable> t1{34};
    std::tuple<NonDefaultConstructable> r1{8};
    SerializationContext ctx;
    ctx.createSerializer().ext(t1, bitsery::ext::StdTuple{
        [](auto& s, NonDefaultConstructable& v) {
            s.value4b(v._x);
        },
    });
    ctx.createDeserializer().ext(r1, bitsery::ext::StdTuple{
        [](auto& s, NonDefaultConstructable& v) {
            s.value4b(v._x);
        },
    });
    EXPECT_THAT(t1, Eq(r1));
}

#else
#if defined(_MSC_VER)
#pragma message("Tests for StdTuple requires C++17")
#else
#warning "Tests for StdTuple requires C++17"
#endif
#endif