1267 lines
36 KiB
C++
1267 lines
36 KiB
C++
#include <cpp-utils/either.h>
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#include <gtest/gtest.h>
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#include <gmock/gmock.h>
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#include <vector>
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#include <sstream>
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#include <boost/optional/optional_io.hpp>
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using std::string;
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using std::vector;
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using std::pair;
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using std::tuple;
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using std::ostringstream;
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using cpputils::either;
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using cpputils::make_left;
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using cpputils::make_right;
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// TODO Test noexcept tags are correct
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namespace {
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class MovableOnly final {
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public:
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explicit MovableOnly(int value): _value(value) {}
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MovableOnly(const MovableOnly&) = delete;
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MovableOnly& operator=(const MovableOnly&) = delete;
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MovableOnly(MovableOnly&& rhs): _value(rhs._value) {
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rhs._value = 0;
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}
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MovableOnly& operator=(MovableOnly&& rhs) {
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_value = rhs._value;
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rhs._value = 0;
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return *this;
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}
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int value() const {
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return _value;
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}
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private:
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int _value;
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};
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bool operator==(const MovableOnly& lhs, const MovableOnly& rhs) {
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return lhs.value() == rhs.value();
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}
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std::ostream& operator<<(std::ostream& str, const MovableOnly& v) {
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return str << "MovableOnly(" << v.value() << ")";
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}
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template<class T>
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void test_with_matrix(std::vector<std::function<void(std::function<void(T&)>)>> setups, std::vector<std::function<void(T&)>> expectations) {
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for (const auto& setup: setups) {
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for (const auto& expectation: expectations) {
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setup(expectation);
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}
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}
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}
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template<class Left, class Right>
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std::vector<std::function<void(either<Left, Right>&)>> EXPECT_IS_LEFT(const Left& expected) {
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return {
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[&] (auto& obj) {
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EXPECT_TRUE(obj.is_left());
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}, [&] (auto& obj) {
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EXPECT_FALSE(obj.is_right());
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}, [&] (auto& obj) {
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EXPECT_EQ(expected, obj.left());
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}, [&] (auto& obj) {
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EXPECT_EQ(expected, std::move(obj).left());
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}, [&] (auto& obj) {
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EXPECT_ANY_THROW(obj.right());
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}, [&] (auto& obj) {
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EXPECT_ANY_THROW(std::move(obj).right());
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}, [&] (auto& obj) {
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EXPECT_EQ(expected, obj.left_opt().value());
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}, [&] (auto& obj) {
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EXPECT_EQ(expected, std::move(obj).left_opt().value());
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}, [&] (auto& obj) {
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EXPECT_TRUE(boost::none == obj.right_opt());
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}, [&] (auto& obj) {
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EXPECT_TRUE(boost::none == std::move(obj).right_opt());
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}
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};
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}
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template<class Left, class Right>
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std::vector<std::function<void(either<Left, Right>&)>> EXPECT_IS_RIGHT(const Right& expected) {
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return {
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[&] (auto& obj) {
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EXPECT_FALSE(obj.is_left());
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}, [&] (auto& obj) {
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EXPECT_TRUE(obj.is_right());
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}, [&] (auto& obj) {
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EXPECT_EQ(expected, obj.right());
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}, [&] (auto& obj) {
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EXPECT_EQ(expected, std::move(obj).right());
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}, [&] (auto& obj) {
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EXPECT_ANY_THROW(obj.left());
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}, [&] (auto& obj) {
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EXPECT_ANY_THROW(std::move(obj).left());
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}, [&] (auto& obj) {
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EXPECT_EQ(expected, obj.right_opt().value());
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}, [&] (auto& obj) {
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EXPECT_EQ(expected, std::move(obj).right_opt().value());
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}, [&] (auto& obj) {
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EXPECT_TRUE(boost::none == obj.left_opt());
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}, [&] (auto& obj) {
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EXPECT_TRUE(boost::none == std::move(obj).left_opt());
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}
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};
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}
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template<class Value>
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std::vector<std::function<void(Value&)>> EXPECT_IS(const Value& v) {
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return {
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[&] (auto& obj) {
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return obj == v;
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}
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};
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}
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template<typename T>
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struct StoreWith1ByteFlag {
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T val;
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char flag;
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};
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template<typename Left, typename Right>
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void TestSpaceUsage() {
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EXPECT_EQ(std::max(sizeof(StoreWith1ByteFlag<Left>), sizeof(StoreWith1ByteFlag<Right>)), sizeof(either<Left, Right>));
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}
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}
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TEST(EitherTest, SpaceUsage) {
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TestSpaceUsage<char, int>();
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TestSpaceUsage<int, short>();
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TestSpaceUsage<char, short>();
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TestSpaceUsage<int, string>();
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TestSpaceUsage<string, vector<string>>();
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}
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TEST(EitherTest, givenLeft) {
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test_with_matrix({
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[] (const auto& test) {
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either<int, string> a(4);
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test(a);
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}, [] (const auto& test) {
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either<int, string> a = 4;
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test(a);
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},
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},
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EXPECT_IS_LEFT<int, string>(4)
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);
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}
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TEST(EitherTest, givenRight) {
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test_with_matrix({
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[] (const auto& test) {
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either<int, string> a("4");
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test(a);
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}, [] (const auto& test) {
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either<int, string> a = string("4");
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test(a);
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}
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},
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EXPECT_IS_RIGHT<int, string>("4")
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);
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}
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TEST(EitherTest, givenMakeLeft) {
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test_with_matrix({
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[] (const auto& test) {
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either<int, string> a = make_left<int, string>(4);
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test(a);
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}, [] (const auto& test) {
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auto a = make_left<int, string>(4);
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test(a);
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},
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},
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EXPECT_IS_LEFT<int, string>(4)
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);
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}
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TEST(EitherTest, givenMakeLeftWithSameType) {
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test_with_matrix({
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[] (const auto& test) {
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either<int, int> a = make_left<int, int>(4);
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test(a);
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}, [] (const auto& test) {
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auto a = make_left<int, int>(4);
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test(a);
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},
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},
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EXPECT_IS_LEFT<int, int>(4)
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);
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}
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TEST(EitherTest, givenMakeRight) {
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test_with_matrix({
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[] (const auto& test) {
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either<int, string> a = make_right<int, string>("4");
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test(a);
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}, [] (const auto& test) {
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auto a = make_right<int, string>("4");
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test(a);
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}
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},
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EXPECT_IS_RIGHT<int, string>("4")
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);
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}
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TEST(EitherTest, givenMakeRightWithSameType) {
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test_with_matrix({
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[] (const auto& test) {
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either<string, string> a = make_right<string, string>("4");
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test(a);
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}, [] (const auto& test) {
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auto a = make_right<string, string>("4");
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test(a);
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}
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},
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EXPECT_IS_RIGHT<string, string>("4")
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);
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}
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TEST(EitherTest, givenMovableOnlyMakeLeft) {
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test_with_matrix({
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[] (const auto& test) {
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either<MovableOnly, string> a = make_left<MovableOnly, string>(3);
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test(a);
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}, [] (const auto& test) {
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auto a = make_left<MovableOnly, string>(3);
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test(a);
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},
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},
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EXPECT_IS_LEFT<MovableOnly, string>(MovableOnly(3))
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);
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}
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TEST(EitherTest, givenMovableOnlyMakeRight) {
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test_with_matrix({
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[] (const auto& test) {
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either<int, MovableOnly> a = make_right<int, MovableOnly>(3);
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test(a);
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}, [] (const auto& test) {
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auto a = make_right<int, MovableOnly>(3);
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test(a);
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}
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},
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EXPECT_IS_RIGHT<int, MovableOnly>(MovableOnly(3))
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);
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}
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TEST(EitherTest, givenMultiParamMakeLeft) {
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test_with_matrix({
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[] (const auto& test) {
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either<pair<int, int>, string> a = make_left<pair<int, int>, string>(5, 6);
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test(a);
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}, [] (const auto& test) {
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auto a = make_left<pair<int, int>, string>(5, 6);
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test(a);
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},
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},
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EXPECT_IS_LEFT<pair<int, int>, string>(pair<int, int>(5, 6))
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);
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}
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TEST(EitherTest, givenMultiParamMakeRight) {
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test_with_matrix({
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[] (const auto& test) {
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either<int, pair<int, int>> a = make_right<int, pair<int, int>>(5, 6);
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test(a);
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}, [] (const auto& test) {
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auto a = make_right<int, pair<int, int>>(5, 6);
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test(a);
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}
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},
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EXPECT_IS_RIGHT<int, pair<int, int>>(pair<int, int>(5, 6))
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);
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}
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TEST(EitherTest, givenLeftCopyConstructedFromValue_thenNewIsCorrect) {
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test_with_matrix({
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[] (const auto& test) {
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const string a = "4";
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either<string, int> b(a);
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test(b);
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}
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},
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EXPECT_IS_LEFT<string, int>("4")
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);
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}
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TEST(EitherTest, givenLeftCopyConstructedFromValue_thenOldIsCorrect) {
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test_with_matrix({
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[] (const auto& test) {
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string a = "4";
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const either<string, int> b(a);
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test(a);
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}
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},
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EXPECT_IS<string>("4")
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);
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}
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TEST(EitherTest, givenRightCopyConstructedFromValue_thenNewIsCorrect) {
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test_with_matrix({
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[] (const auto& test) {
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const string a = "4";
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either<int, string> b(a);
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test(b);
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}
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},
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EXPECT_IS_RIGHT<int, string>("4")
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);
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}
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TEST(EitherTest, givenRightCopyConstructedFromValue_thenOldIsCorrect) {
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test_with_matrix({
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[] (const auto& test) {
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string a = "4";
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const either<int, string> b(a);
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test(a);
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}
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},
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EXPECT_IS<string>("4")
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);
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}
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TEST(EitherTest, givenLeftMoveConstructedFromValue_thenNewIsCorrect) {
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test_with_matrix({
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[] (const auto& test) {
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MovableOnly a(3);
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either<MovableOnly, int> b(std::move(a));
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test(b);
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}
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},
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EXPECT_IS_LEFT<MovableOnly, int>(MovableOnly(3))
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);
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}
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TEST(EitherTest, givenLeftMoveConstructedFromValue_thenOldIsCorrect) {
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test_with_matrix({
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[] (const auto& test) {
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MovableOnly a(3);
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const either<MovableOnly, int> b(std::move(a));
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test(a); // NOLINT(bugprone-use-after-move)
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}
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},
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EXPECT_IS<MovableOnly>(MovableOnly(0)) // 0 is moved-from value
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);
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}
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TEST(EitherTest, givenRightMoveConstructedFromValue_thenNewIsCorrect) {
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test_with_matrix({
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[] (const auto& test) {
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MovableOnly a(3);
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either<int, MovableOnly> b(std::move(a));
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test(b);
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}
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},
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EXPECT_IS_RIGHT<int, MovableOnly>(MovableOnly(3))
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);
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}
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TEST(EitherTest, givenRightMoveConstructedFromValue_thenOldIsCorrect) {
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test_with_matrix({
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[] (const auto& test) {
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MovableOnly a(3);
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const either<int, MovableOnly> b(std::move(a));
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test(a); // NOLINT(bugprone-use-after-move)
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}
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},
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EXPECT_IS<MovableOnly>(MovableOnly(0)) // 0 is moved-from value
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);
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}
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TEST(EitherTest, givenLeftCopyAssignedFromValue_thenNewIsCorrect) {
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test_with_matrix({
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[] (const auto& test) {
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const string a = "4";
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either<string, int> b(2);
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b = a;
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test(b);
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}, [] (const auto& test) {
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const string a = "4";
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either<string, int> b("2");
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b = a;
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test(b);
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}
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},
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EXPECT_IS_LEFT<string, int>("4")
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);
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}
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TEST(EitherTest, givenLeftCopyAssignedFromValue_thenOldIsCorrect) {
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test_with_matrix({
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[] (const auto& test) {
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string a = "4";
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either<string, int> b(2);
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b = a;
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test(a);
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}, [] (const auto& test) {
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string a = "4";
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either<string, int> b("2");
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b = a;
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test(a);
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}
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},
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EXPECT_IS<string>("4")
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);
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}
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TEST(EitherTest, givenRightCopyAssignedFromValue_thenNewIsCorrect) {
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test_with_matrix({
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[] (const auto& test) {
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const string a = "4";
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either<int, string> b(2);
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b = a;
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test(b);
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}, [] (const auto& test) {
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const string a = "4";
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either<int, string> b("2");
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b = a;
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test(b);
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}
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},
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EXPECT_IS_RIGHT<int, string>("4")
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);
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}
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TEST(EitherTest, givenRightCopyAssignedFromValue_thenOldIsCorrect) {
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test_with_matrix({
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[] (const auto& test) {
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string a = "4";
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either<int, string> b(2);
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b = a;
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test(a);
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}, [] (const auto& test) {
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string a = "4";
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either<int, string> b("2");
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b = a;
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test(a);
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}
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},
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EXPECT_IS<string>("4")
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);
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}
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TEST(EitherTest, givenLeftMoveAssignedFromValue_thenNewIsCorrect) {
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test_with_matrix({
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[] (const auto& test) {
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MovableOnly a(3);
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either<MovableOnly, string> b(2);
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b = std::move(a);
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test(b);
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}, [] (const auto& test) {
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MovableOnly a(3);
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either<MovableOnly, string> b(MovableOnly(2));
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b = std::move(a);
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test(b);
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}
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},
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EXPECT_IS_LEFT<MovableOnly, string>(MovableOnly(3))
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);
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}
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TEST(EitherTest, givenLeftMoveAssignedFromValue_thenOldIsCorrect) {
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test_with_matrix({
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[] (const auto& test) {
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MovableOnly a(3);
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either<MovableOnly, string> b("2");
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b = std::move(a);
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test(a); // NOLINT(bugprone-use-after-move)
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}, [] (const auto& test) {
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MovableOnly a(3);
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either<MovableOnly, string> b(MovableOnly(0));
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b = std::move(a);
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test(a); // NOLINT(bugprone-use-after-move)
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}
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},
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EXPECT_IS<MovableOnly>(MovableOnly(0))
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);
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}
|
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TEST(EitherTest, givenRightMoveAssignedFromValue_thenNewIsCorrect) {
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test_with_matrix({
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[] (const auto& test) {
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MovableOnly a(3);
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either<string, MovableOnly> b("2");
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b = std::move(a);
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test(b);
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}, [] (const auto& test) {
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MovableOnly a(3);
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either<string, MovableOnly> b(MovableOnly(2));
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b = std::move(a);
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test(b);
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}
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},
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EXPECT_IS_RIGHT<string, MovableOnly>(MovableOnly(3))
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);
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}
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TEST(EitherTest, givenRightMoveAssignedFromValue_thenOldIsCorrect) {
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test_with_matrix({
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[] (const auto& test) {
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MovableOnly a(3);
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either<string, MovableOnly> b("2");
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b = std::move(a);
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test(a); // NOLINT(bugprone-use-after-move)
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}, [] (const auto& test) {
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MovableOnly a(3);
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either<string, MovableOnly> b(MovableOnly(2));
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b = std::move(a);
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test(a); // NOLINT(bugprone-use-after-move)
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}
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},
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EXPECT_IS<MovableOnly>(MovableOnly(0)) // 0 is moved-from value
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);
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}
|
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TEST(EitherTest, givenLeftCopyConstructed_thenNewIsCorrect) {
|
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test_with_matrix({
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[] (const auto& test) {
|
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const either<string, int> a("4");
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either<string, int> b(a);
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test(b);
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}
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},
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EXPECT_IS_LEFT<string, int>("4")
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);
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}
|
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TEST(EitherTest, givenLeftCopyConstructed_thenOldIsCorrect) {
|
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test_with_matrix({
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[] (const auto& test) {
|
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either<string, int> a("4");
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const either<string, int> b(a);
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test(a);
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}
|
|
},
|
|
EXPECT_IS_LEFT<string, int>("4")
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenLeftCopyConstructed_withSameType_thenNewIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
const either<string, string> a = make_left<string, string>("4");
|
|
either<string, string> b(a);
|
|
test(b);
|
|
}
|
|
},
|
|
EXPECT_IS_LEFT<string, string>("4")
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenLeftCopyConstructed_withSameType_thenOldIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<string, string> a = make_left<string, string>("4");
|
|
const either<string, string> b(a);
|
|
test(a);
|
|
}
|
|
},
|
|
EXPECT_IS_LEFT<string, string>("4")
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenRightCopyConstructed_thenNewIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
const either<int, string> a("4");
|
|
either<int, string> b(a);
|
|
test(b);
|
|
}
|
|
},
|
|
EXPECT_IS_RIGHT<int, string>("4")
|
|
);
|
|
}
|
|
|
|
|
|
TEST(EitherTest, givenRightCopyConstructed_thenOldIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<int, string> a("4");
|
|
const either<int, string> b(a);
|
|
test(a);
|
|
}
|
|
},
|
|
EXPECT_IS_RIGHT<int, string>("4")
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenRightCopyConstructed_withSameType_thenNewIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
const either<string, string> a = make_right<string, string>("4");
|
|
either<string, string> b(a);
|
|
test(b);
|
|
}
|
|
},
|
|
EXPECT_IS_RIGHT<string, string>("4")
|
|
);
|
|
}
|
|
|
|
|
|
TEST(EitherTest, givenRightCopyConstructed_withSameType_thenOldIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<string, string> a = make_right<string, string>("4");
|
|
const either<string, string> b(a);
|
|
test(a);
|
|
}
|
|
},
|
|
EXPECT_IS_RIGHT<string, string>("4")
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenLeftMoveConstructed_thenNewIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<MovableOnly, int> a(MovableOnly(3));
|
|
either<MovableOnly, int> b(std::move(a));
|
|
test(b);
|
|
}
|
|
},
|
|
EXPECT_IS_LEFT<MovableOnly, int>(MovableOnly(3))
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenLeftMoveConstructed_thenOldIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<MovableOnly, int> a(MovableOnly(3));
|
|
const either<MovableOnly, int> b(std::move(a));
|
|
test(a); // NOLINT(bugprone-use-after-move)
|
|
}
|
|
},
|
|
EXPECT_IS_LEFT<MovableOnly, int>(MovableOnly(0)) // 0 is moved-from value
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenLeftMoveConstructed_withSameType_thenNewIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<MovableOnly, MovableOnly> a = make_left<MovableOnly, MovableOnly>(MovableOnly(3));
|
|
either<MovableOnly, MovableOnly> b(std::move(a));
|
|
test(b);
|
|
}
|
|
},
|
|
EXPECT_IS_LEFT<MovableOnly, MovableOnly>(MovableOnly(3))
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenLeftMoveConstructed_withSameType_thenOldIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<MovableOnly, MovableOnly> a = make_left<MovableOnly, MovableOnly>(MovableOnly(3));
|
|
const either<MovableOnly, MovableOnly> b(std::move(a));
|
|
test(a); // NOLINT(bugprone-use-after-move)
|
|
}
|
|
},
|
|
EXPECT_IS_LEFT<MovableOnly, MovableOnly>(MovableOnly(0)) // 0 is moved-from value
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenRightMoveConstructed_thenNewIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<int, MovableOnly> a(MovableOnly(3));
|
|
either<int, MovableOnly> b(std::move(a));
|
|
test(b);
|
|
}
|
|
},
|
|
EXPECT_IS_RIGHT<int, MovableOnly>(MovableOnly(3))
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenRightMoveConstructed_thenOldIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<int, MovableOnly> a(MovableOnly(3));
|
|
const either<int, MovableOnly> b(std::move(a));
|
|
test(a); // NOLINT(bugprone-use-after-move)
|
|
}
|
|
},
|
|
EXPECT_IS_RIGHT<int, MovableOnly>(MovableOnly(0)) // 0 is moved-from value
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenRightMoveConstructed_withSameType_thenNewIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<MovableOnly, MovableOnly> a = make_right<MovableOnly, MovableOnly>(MovableOnly(3));
|
|
either<MovableOnly, MovableOnly> b(std::move(a));
|
|
test(b);
|
|
}
|
|
},
|
|
EXPECT_IS_RIGHT<MovableOnly, MovableOnly>(MovableOnly(3))
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenRightMoveConstructed_withSameType_thenOldIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<MovableOnly, MovableOnly> a = make_right<MovableOnly, MovableOnly>(MovableOnly(3));
|
|
const either<MovableOnly, MovableOnly> b(std::move(a));
|
|
test(a); // NOLINT(bugprone-use-after-move)
|
|
}
|
|
},
|
|
EXPECT_IS_RIGHT<MovableOnly, MovableOnly>(MovableOnly(0)) // 0 is moved-from value
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenLeftCopyAssigned_thenNewIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
const either<string, int> a("4");
|
|
either<string, int> b(2);
|
|
b = a;
|
|
test(b);
|
|
}, [] (const auto& test) {
|
|
const either<string, int> a("4");
|
|
either<string, int> b("2");
|
|
b = a;
|
|
test(b);
|
|
}
|
|
},
|
|
EXPECT_IS_LEFT<string, int>("4")
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenLeftCopyAssigned_thenOldIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<string, int> a("4");
|
|
either<string, int> b(2);
|
|
b = a;
|
|
test(a);
|
|
}, [] (const auto& test) {
|
|
either<string, int> a("4");
|
|
either<string, int> b("2");
|
|
b = a;
|
|
test(a);
|
|
}
|
|
},
|
|
EXPECT_IS_LEFT<string, int>("4")
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenLeftCopyAssigned_withSameType_thenNewIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
const either<string, string> a = make_left<string, string>("4");
|
|
either<string, string> b = make_right<string, string>("2");
|
|
b = a;
|
|
test(b);
|
|
}, [] (const auto& test) {
|
|
const either<string, string> a = make_left<string, string>("4");
|
|
either<string, string> b = make_left<string, string>("2");
|
|
b = a;
|
|
test(b);
|
|
}
|
|
},
|
|
EXPECT_IS_LEFT<string, string>("4")
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenLeftCopyAssigned_withSameType_thenOldIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<string, string> a = make_left<string, string>("4");
|
|
either<string, string> b = make_right<string, string>("2");
|
|
b = a;
|
|
test(a);
|
|
}, [] (const auto& test) {
|
|
either<string, string> a = make_left<string, string>("4");
|
|
either<string, string> b = make_left<string, string>("2");
|
|
b = a;
|
|
test(a);
|
|
}
|
|
},
|
|
EXPECT_IS_LEFT<string, string>("4")
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenRightCopyAssigned_thenNewIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
const either<int, string> a("4");
|
|
either<int, string> b(2);
|
|
b = a;
|
|
test(b);
|
|
}, [] (const auto& test) {
|
|
const either<int, string> a("4");
|
|
either<int, string> b("2");
|
|
b = a;
|
|
test(b);
|
|
}
|
|
},
|
|
EXPECT_IS_RIGHT<int, string>("4")
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenRightCopyAssigned_thenOldIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<int, string> a("4");
|
|
either<int, string> b(2);
|
|
b = a;
|
|
test(a);
|
|
}, [] (const auto& test) {
|
|
either<int, string> a("4");
|
|
either<int, string> b("2");
|
|
b = a;
|
|
test(a);
|
|
}
|
|
},
|
|
EXPECT_IS_RIGHT<int, string>("4")
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenRightCopyAssigned_withSameType_thenNewIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
const either<string, string> a = make_right<string, string>("4");
|
|
either<string, string> b = make_left<string, string>("2");
|
|
b = a;
|
|
test(b);
|
|
}, [] (const auto& test) {
|
|
const either<string, string> a = make_right<string, string>("4");
|
|
either<string, string> b = make_right<string, string>("2");
|
|
b = a;
|
|
test(b);
|
|
}
|
|
},
|
|
EXPECT_IS_RIGHT<string, string>("4")
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenRightCopyAssigned_withSameType_thenOldIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<string, string> a = make_right<string, string>("4");
|
|
either<string, string> b = make_left<string, string>("2");
|
|
b = a;
|
|
test(a);
|
|
}, [] (const auto& test) {
|
|
either<string, string> a = make_right<string, string>("4");
|
|
either<string, string> b = make_right<string, string>("2");
|
|
b = a;
|
|
test(a);
|
|
}
|
|
},
|
|
EXPECT_IS_RIGHT<string, string>("4")
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenLeftMoveAssigned_thenNewIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<MovableOnly, string> a(MovableOnly(3));
|
|
either<MovableOnly, string> b(2);
|
|
b = std::move(a);
|
|
test(b);
|
|
}, [] (const auto& test) {
|
|
either<MovableOnly, string> a(MovableOnly(3));
|
|
either<MovableOnly, string> b(MovableOnly(2));
|
|
b = std::move(a);
|
|
test(b);
|
|
}
|
|
},
|
|
EXPECT_IS_LEFT<MovableOnly, string>(MovableOnly(3))
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenLeftMoveAssigned_thenOldIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<MovableOnly, string> a(MovableOnly(3));
|
|
either<MovableOnly, string> b(2);
|
|
b = std::move(a);
|
|
test(a); // NOLINT(bugprone-use-after-move)
|
|
}, [] (const auto& test) {
|
|
either<MovableOnly, string> a(MovableOnly(3));
|
|
either<MovableOnly, string> b(MovableOnly(2));
|
|
b = std::move(a);
|
|
test(a); // NOLINT(bugprone-use-after-move)
|
|
}
|
|
},
|
|
EXPECT_IS_LEFT<MovableOnly, string>(MovableOnly(0)) // 0 is moved-from value
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenLeftMoveAssigned_withSameType_thenNewIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<MovableOnly, MovableOnly> a = make_left<MovableOnly, MovableOnly>(3);
|
|
either<MovableOnly, MovableOnly> b = make_right<MovableOnly, MovableOnly>(2);
|
|
b = std::move(a);
|
|
test(b);
|
|
}, [] (const auto& test) {
|
|
either<MovableOnly, MovableOnly> a = make_left<MovableOnly, MovableOnly>(3);
|
|
either<MovableOnly, MovableOnly> b = make_left<MovableOnly, MovableOnly>(2);
|
|
b = std::move(a);
|
|
test(b);
|
|
}
|
|
},
|
|
EXPECT_IS_LEFT<MovableOnly, MovableOnly>(MovableOnly(3))
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenLeftMoveAssigned_withSameType_thenOldIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<MovableOnly, MovableOnly> a = make_left<MovableOnly, MovableOnly>(3);
|
|
either<MovableOnly, MovableOnly> b = make_right<MovableOnly, MovableOnly>(2);
|
|
b = std::move(a);
|
|
test(a); // NOLINT(bugprone-use-after-move)
|
|
}, [] (const auto& test) {
|
|
either<MovableOnly, MovableOnly> a = make_left<MovableOnly, MovableOnly>(3);
|
|
either<MovableOnly, MovableOnly> b = make_left<MovableOnly, MovableOnly>(2);
|
|
b = std::move(a);
|
|
test(a); // NOLINT(bugprone-use-after-move)
|
|
}
|
|
},
|
|
EXPECT_IS_LEFT<MovableOnly, MovableOnly>(MovableOnly(0)) // 0 is moved-from value
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenRightMoveAssigned_thenNewIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<string, MovableOnly> a(MovableOnly(3));
|
|
either<string, MovableOnly> b("2");
|
|
b = std::move(a);
|
|
test(b);
|
|
}, [] (const auto& test) {
|
|
either<string, MovableOnly> a(MovableOnly(3));
|
|
either<string, MovableOnly> b(MovableOnly(2));
|
|
b = std::move(a);
|
|
test(b);
|
|
}
|
|
},
|
|
EXPECT_IS_RIGHT<string, MovableOnly>(MovableOnly(3))
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenRightMoveAssigned_thenOldIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<string, MovableOnly> a(MovableOnly(3));
|
|
either<string, MovableOnly> b("2");
|
|
b = std::move(a);
|
|
test(a); // NOLINT(bugprone-use-after-move)
|
|
}, [] (const auto& test) {
|
|
either<string, MovableOnly> a(MovableOnly(3));
|
|
either<string, MovableOnly> b(MovableOnly(2));
|
|
b = std::move(a);
|
|
test(a); // NOLINT(bugprone-use-after-move)
|
|
}
|
|
},
|
|
EXPECT_IS_RIGHT<string, MovableOnly>(MovableOnly(0)) // 0 is moved-from value
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenRightMoveAssigned_withSameType_thenNewIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<MovableOnly, MovableOnly> a = make_right<MovableOnly, MovableOnly>(3);
|
|
either<MovableOnly, MovableOnly> b = make_left<MovableOnly, MovableOnly>(2);
|
|
b = std::move(a);
|
|
test(b);
|
|
}, [] (const auto& test) {
|
|
either<MovableOnly, MovableOnly> a = make_right<MovableOnly, MovableOnly>(3);
|
|
either<MovableOnly, MovableOnly> b = make_right<MovableOnly, MovableOnly>(2);
|
|
b = std::move(a);
|
|
test(b);
|
|
}
|
|
},
|
|
EXPECT_IS_RIGHT<MovableOnly, MovableOnly>(MovableOnly(3))
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenRightMoveAssigned_withSameType_thenOldIsCorrect) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<MovableOnly, MovableOnly> a = make_right<MovableOnly, MovableOnly>(3);
|
|
either<MovableOnly, MovableOnly> b = make_left<MovableOnly, MovableOnly>(2);
|
|
b = std::move(a);
|
|
test(a); // NOLINT(bugprone-use-after-move)
|
|
}, [] (const auto& test) {
|
|
either<MovableOnly, MovableOnly> a = make_right<MovableOnly, MovableOnly>(3);
|
|
either<MovableOnly, MovableOnly> b = make_right<MovableOnly, MovableOnly>(2);
|
|
b = std::move(a);
|
|
test(a); // NOLINT(bugprone-use-after-move)
|
|
}
|
|
},
|
|
EXPECT_IS_RIGHT<MovableOnly, MovableOnly>(MovableOnly(0)) // 0 is moved-from value
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenLeft_whenModified_thenValueIsChanged) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<int, string> a(4);
|
|
a.left() = 5;
|
|
test(a);
|
|
}, [] (const auto& test) {
|
|
either<int, string> a(4);
|
|
*a.left_opt() = 5; // NOLINT(clang-analyzer-core.uninitialized.UndefReturn)
|
|
test(a);
|
|
}
|
|
},
|
|
EXPECT_IS_LEFT<int, string>(5)
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenRight_whenModified_thenValueIsChanged) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<int, string> a("4");
|
|
a.right() = "5";
|
|
test(a);
|
|
}, [] (const auto& test) {
|
|
either<int, string> a("4");
|
|
*a.right_opt() = "5"; // NOLINT(clang-analyzer-core.uninitialized.UndefReturn)
|
|
test(a);
|
|
}
|
|
},
|
|
EXPECT_IS_RIGHT<int, string>("5")
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, canEmplaceConstructLeft) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<tuple<int, int>, tuple<int, string, int>> a(2, 3);
|
|
test(a);
|
|
}
|
|
},
|
|
EXPECT_IS_LEFT<tuple<int, int>, tuple<int, string, int>>(tuple<int, int>(2, 3))
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, canEmplaceConstructRight) {
|
|
test_with_matrix({
|
|
[] (const auto& test) {
|
|
either<tuple<int, int>, tuple<int, string, int>> a(2, "3", 4);
|
|
test(a);
|
|
}
|
|
},
|
|
EXPECT_IS_RIGHT<tuple<int, int>, tuple<int, string, int>>(tuple<int, string, int>(2, "3", 4))
|
|
);
|
|
}
|
|
|
|
TEST(EitherTest, givenEqualLefts_thenAreEqual) {
|
|
const either<string, int> a("3");
|
|
const either<string, int> b("3");
|
|
EXPECT_TRUE(a == b);
|
|
}
|
|
|
|
TEST(EitherTest, givenEqualLefts_thenAreNotUnequal) {
|
|
const either<string, int> a("3");
|
|
const either<string, int> b("3");
|
|
EXPECT_FALSE(a != b);
|
|
}
|
|
|
|
TEST(EitherTest, givenEqualRights_thenAreEqual) {
|
|
const either<string, int> a(3);
|
|
const either<string, int> b(3);
|
|
EXPECT_TRUE(a == b);
|
|
}
|
|
|
|
TEST(EitherTest, givenEqualRights_thenAreNotUnequal) {
|
|
const either<string, int> a(3);
|
|
const either<string, int> b(3);
|
|
EXPECT_FALSE(a != b);
|
|
}
|
|
|
|
TEST(EitherTest, givenLeftAndRight_thenAreNotEqual) {
|
|
const either<string, int> a("3");
|
|
const either<string, int> b(3);
|
|
EXPECT_FALSE(a == b);
|
|
EXPECT_FALSE(b == a);
|
|
}
|
|
|
|
TEST(EitherTest, givenLeftAndRight_thenAreUnequal) {
|
|
const either<string, int> a("3");
|
|
const either<string, int> b(3);
|
|
EXPECT_TRUE(a != b);
|
|
EXPECT_TRUE(b != a);
|
|
}
|
|
|
|
TEST(EitherTest, OutputLeft) {
|
|
ostringstream str;
|
|
str << either<string, int>("mystring");
|
|
EXPECT_EQ("Left(mystring)", str.str());
|
|
}
|
|
|
|
TEST(EitherTest, OutputRight) {
|
|
ostringstream str;
|
|
str << either<int, string>("mystring");
|
|
EXPECT_EQ("Right(mystring)", str.str());
|
|
}
|
|
|
|
TEST(EitherTest, givenLeftAndRightWithSameType_thenAreNotEqual) {
|
|
const either<string, string> a = make_left<string, string>("3");
|
|
const either<string, string> b = make_right<string, string>("3");
|
|
EXPECT_FALSE(a == b);
|
|
EXPECT_FALSE(b == a);
|
|
}
|
|
|
|
TEST(EitherTest, givenLeftAndRightWithSameType_thenAreUnequal) {
|
|
const either<string, string> a = make_left<string, string>("3");
|
|
const either<string, string> b = make_right<string, string>("3");
|
|
EXPECT_TRUE(a != b);
|
|
EXPECT_TRUE(b != a);
|
|
}
|
|
|
|
|
|
namespace {
|
|
class DestructorCallback {
|
|
public:
|
|
MOCK_METHOD(void, call, (), (const));
|
|
|
|
void EXPECT_CALLED(int times = 1) {
|
|
EXPECT_CALL(*this, call()).Times(times);
|
|
}
|
|
};
|
|
class ClassWithDestructorCallback {
|
|
public:
|
|
ClassWithDestructorCallback(const DestructorCallback *destructorCallback) : _destructorCallback(destructorCallback) {}
|
|
ClassWithDestructorCallback(const ClassWithDestructorCallback &rhs): _destructorCallback(rhs._destructorCallback) {}
|
|
|
|
~ClassWithDestructorCallback() {
|
|
_destructorCallback->call();
|
|
}
|
|
|
|
private:
|
|
const DestructorCallback *_destructorCallback;
|
|
|
|
ClassWithDestructorCallback &operator=(const ClassWithDestructorCallback &rhs) = delete;
|
|
};
|
|
class OnlyMoveableClassWithDestructorCallback {
|
|
public:
|
|
OnlyMoveableClassWithDestructorCallback(const DestructorCallback *destructorCallback) : _destructorCallback(destructorCallback) { }
|
|
OnlyMoveableClassWithDestructorCallback(OnlyMoveableClassWithDestructorCallback &&source): _destructorCallback(source._destructorCallback) {}
|
|
|
|
~OnlyMoveableClassWithDestructorCallback() {
|
|
_destructorCallback->call();
|
|
}
|
|
|
|
private:
|
|
DISALLOW_COPY_AND_ASSIGN(OnlyMoveableClassWithDestructorCallback);
|
|
const DestructorCallback *_destructorCallback;
|
|
};
|
|
|
|
}
|
|
|
|
TEST(EitherTest_Destructor, LeftDestructorIsCalled) {
|
|
DestructorCallback destructorCallback;
|
|
destructorCallback.EXPECT_CALLED(2); //Once for the temp object, once when the either class destructs
|
|
|
|
const ClassWithDestructorCallback temp(&destructorCallback);
|
|
const either<ClassWithDestructorCallback, string> var = temp;
|
|
}
|
|
|
|
TEST(EitherTest_Destructor, RightDestructorIsCalled) {
|
|
DestructorCallback destructorCallback;
|
|
destructorCallback.EXPECT_CALLED(2); //Once for the temp object, once when the either class destructs
|
|
|
|
const ClassWithDestructorCallback temp(&destructorCallback);
|
|
const either<string, ClassWithDestructorCallback> var = temp;
|
|
}
|
|
|
|
TEST(EitherTest_Destructor, LeftDestructorIsCalledAfterCopying) {
|
|
DestructorCallback destructorCallback;
|
|
destructorCallback.EXPECT_CALLED(3); //Once for the temp object, once for var1 and once for var2
|
|
|
|
const ClassWithDestructorCallback temp(&destructorCallback);
|
|
const either<ClassWithDestructorCallback, string> var1 = temp;
|
|
const either<ClassWithDestructorCallback, string> var2 = var1;
|
|
}
|
|
|
|
TEST(EitherTest_Destructor, RightDestructorIsCalledAfterCopying) {
|
|
DestructorCallback destructorCallback;
|
|
destructorCallback.EXPECT_CALLED(3); //Once for the temp object, once for var1 and once for var2
|
|
|
|
const ClassWithDestructorCallback temp(&destructorCallback);
|
|
const either<string, ClassWithDestructorCallback> var1 = temp;
|
|
const either<string, ClassWithDestructorCallback> var2 = var1;
|
|
}
|
|
|
|
TEST(EitherTest_Destructor, LeftDestructorIsCalledAfterMoving) {
|
|
DestructorCallback destructorCallback;
|
|
destructorCallback.EXPECT_CALLED(3); //Once for the temp object, once for var1 and once for var2
|
|
|
|
OnlyMoveableClassWithDestructorCallback temp(&destructorCallback);
|
|
either<OnlyMoveableClassWithDestructorCallback, string> var1 = std::move(temp);
|
|
const either<OnlyMoveableClassWithDestructorCallback, string> var2 = std::move(var1);
|
|
}
|
|
|
|
TEST(EitherTest_Destructor, RightDestructorIsCalledAfterMoving) {
|
|
DestructorCallback destructorCallback;
|
|
destructorCallback.EXPECT_CALLED(3); //Once for the temp object, once for var1 and once for var2
|
|
|
|
OnlyMoveableClassWithDestructorCallback temp(&destructorCallback);
|
|
either<string, OnlyMoveableClassWithDestructorCallback> var1 = std::move(temp);
|
|
const either<string, OnlyMoveableClassWithDestructorCallback> var2 = std::move(var1);
|
|
}
|
|
|
|
TEST(EitherTest_Destructor, LeftDestructorIsCalledAfterAssignment) {
|
|
DestructorCallback destructorCallback1;
|
|
DestructorCallback destructorCallback2;
|
|
destructorCallback1.EXPECT_CALLED(2); //Once for the temp1 object, once at the assignment
|
|
destructorCallback2.EXPECT_CALLED(3); //Once for the temp2 object, once in destructor of var2, once in destructor of var1
|
|
|
|
const ClassWithDestructorCallback temp1(&destructorCallback1);
|
|
either<ClassWithDestructorCallback, string> var1 = temp1;
|
|
const ClassWithDestructorCallback temp2(&destructorCallback2);
|
|
const either<ClassWithDestructorCallback, string> var2 = temp2;
|
|
var1 = var2;
|
|
}
|
|
|
|
TEST(EitherTest_Destructor, RightDestructorIsCalledAfterAssignment) {
|
|
DestructorCallback destructorCallback1;
|
|
DestructorCallback destructorCallback2;
|
|
destructorCallback1.EXPECT_CALLED(2); //Once for the temp1 object, once at the assignment
|
|
destructorCallback2.EXPECT_CALLED(3); //Once for the temp2 object, once in destructor of var2, once in destructor of var1
|
|
|
|
const ClassWithDestructorCallback temp1(&destructorCallback1);
|
|
either<string, ClassWithDestructorCallback> var1 = temp1;
|
|
const ClassWithDestructorCallback temp2(&destructorCallback2);
|
|
const either<string, ClassWithDestructorCallback> var2 = temp2;
|
|
var1 = var2;
|
|
}
|
|
|
|
TEST(EitherTest_Destructor, LeftDestructorIsCalledAfterMoveAssignment) {
|
|
DestructorCallback destructorCallback1;
|
|
DestructorCallback destructorCallback2;
|
|
destructorCallback1.EXPECT_CALLED(2); //Once for the temp1 object, once at the assignment
|
|
destructorCallback2.EXPECT_CALLED(3); //Once for the temp2 object, once in destructor of var2, once in destructor of var1
|
|
|
|
OnlyMoveableClassWithDestructorCallback temp1(&destructorCallback1);
|
|
either<OnlyMoveableClassWithDestructorCallback, string> var1 = std::move(temp1);
|
|
OnlyMoveableClassWithDestructorCallback temp2(&destructorCallback2);
|
|
either<OnlyMoveableClassWithDestructorCallback, string> var2 = std::move(temp2);
|
|
var1 = std::move(var2);
|
|
}
|
|
|
|
TEST(EitherTest_Destructor, RightDestructorIsCalledAfterMoveAssignment) {
|
|
DestructorCallback destructorCallback1;
|
|
DestructorCallback destructorCallback2;
|
|
destructorCallback1.EXPECT_CALLED(2); //Once for the temp1 object, once at the assignment
|
|
destructorCallback2.EXPECT_CALLED(3); //Once for the temp2 object, once in destructor of var2, once in destructor of var1
|
|
|
|
OnlyMoveableClassWithDestructorCallback temp1(&destructorCallback1);
|
|
either<string, OnlyMoveableClassWithDestructorCallback> var1 = std::move(temp1);
|
|
OnlyMoveableClassWithDestructorCallback temp2(&destructorCallback2);
|
|
either<string, OnlyMoveableClassWithDestructorCallback> var2 = std::move(temp2);
|
|
var1 = std::move(var2);
|
|
}
|