init

Telegram/ThirdParty/expected/tests/bases.cpp

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+#include <catch2/catch.hpp>
+#include <tl/expected.hpp>
+
+#include <string>
+
+// Old versions of GCC don't have the correct trait names. Could fix them up if needs be.
+#if (defined(__GNUC__) && __GNUC__ == 4 && __GNUC_MINOR__ <= 9 &&              \
+     !defined(__clang__))
+// nothing for now
+#else
+TEST_CASE("Triviality", "[bases.triviality]") {
+    REQUIRE(std::is_trivially_copy_constructible<tl::expected<int,int>>::value);
+    REQUIRE(std::is_trivially_copy_assignable<tl::expected<int,int>>::value);
+    REQUIRE(std::is_trivially_move_constructible<tl::expected<int,int>>::value);
+    REQUIRE(std::is_trivially_move_assignable<tl::expected<int,int>>::value);
+    REQUIRE(std::is_trivially_destructible<tl::expected<int,int>>::value);
+
+    REQUIRE(std::is_trivially_copy_constructible<tl::expected<void,int>>::value);
+    REQUIRE(std::is_trivially_move_constructible<tl::expected<void,int>>::value);
+    REQUIRE(std::is_trivially_destructible<tl::expected<void,int>>::value);
+
+
+    {
+        struct T {
+            T(const T&) = default;
+            T(T&&) = default;
+            T& operator=(const T&) = default;
+            T& operator=(T&&) = default;
+            ~T() = default;
+        };
+        REQUIRE(std::is_trivially_copy_constructible<tl::expected<T,int>>::value);
+        REQUIRE(std::is_trivially_copy_assignable<tl::expected<T,int>>::value);
+        REQUIRE(std::is_trivially_move_constructible<tl::expected<T,int>>::value);
+        REQUIRE(std::is_trivially_move_assignable<tl::expected<T,int>>::value);
+        REQUIRE(std::is_trivially_destructible<tl::expected<T,int>>::value);
+    }
+
+    {
+        struct T {
+            T(const T&){}
+            T(T&&) {}
+            T& operator=(const T&) { return *this; }
+            T& operator=(T&&) { return *this; }
+            ~T(){}
+        };
+        REQUIRE(!std::is_trivially_copy_constructible<tl::expected<T,int>>::value);
+        REQUIRE(!std::is_trivially_copy_assignable<tl::expected<T,int>>::value);
+        REQUIRE(!std::is_trivially_move_constructible<tl::expected<T,int>>::value);
+        REQUIRE(!std::is_trivially_move_assignable<tl::expected<T,int>>::value);
+        REQUIRE(!std::is_trivially_destructible<tl::expected<T,int>>::value);
+    }
+
+}
+
+TEST_CASE("Deletion", "[bases.deletion]") {
+    REQUIRE(std::is_copy_constructible<tl::expected<int,int>>::value);
+    REQUIRE(std::is_copy_assignable<tl::expected<int,int>>::value);
+    REQUIRE(std::is_move_constructible<tl::expected<int,int>>::value);
+    REQUIRE(std::is_move_assignable<tl::expected<int,int>>::value);
+    REQUIRE(std::is_destructible<tl::expected<int,int>>::value);
+
+    {
+        struct T {
+            T()=default;
+        };
+        REQUIRE(std::is_default_constructible<tl::expected<T,int>>::value);
+    }
+
+    {
+        struct T {
+            T(int){}
+        };
+        REQUIRE(!std::is_default_constructible<tl::expected<T,int>>::value);
+    }
+
+    {
+        struct T {
+            T(const T&) = default;
+            T(T&&) = default;
+            T& operator=(const T&) = default;
+            T& operator=(T&&) = default;
+            ~T() = default;
+        };
+        REQUIRE(std::is_copy_constructible<tl::expected<T,int>>::value);
+        REQUIRE(std::is_copy_assignable<tl::expected<T,int>>::value);
+        REQUIRE(std::is_move_constructible<tl::expected<T,int>>::value);
+        REQUIRE(std::is_move_assignable<tl::expected<T,int>>::value);
+        REQUIRE(std::is_destructible<tl::expected<T,int>>::value);
+    }
+
+    {
+        struct T {
+            T(const T&)=delete;
+            T(T&&)=delete;
+            T& operator=(const T&)=delete;
+            T& operator=(T&&)=delete;
+        };
+        REQUIRE(!std::is_copy_constructible<tl::expected<T,int>>::value);
+        REQUIRE(!std::is_copy_assignable<tl::expected<T,int>>::value);
+        REQUIRE(!std::is_move_constructible<tl::expected<T,int>>::value);
+        REQUIRE(!std::is_move_assignable<tl::expected<T,int>>::value);
+    }
+
+    {
+        struct T {
+            T(const T&)=delete;
+            T(T&&)=default;
+            T& operator=(const T&)=delete;
+            T& operator=(T&&)=default;
+        };
+        REQUIRE(!std::is_copy_constructible<tl::expected<T,int>>::value);
+        REQUIRE(!std::is_copy_assignable<tl::expected<T,int>>::value);
+        REQUIRE(std::is_move_constructible<tl::expected<T,int>>::value);
+        REQUIRE(std::is_move_assignable<tl::expected<T,int>>::value);
+    }
+
+    {
+        struct T {
+            T(const T&)=default;
+            T(T&&)=delete;
+            T& operator=(const T&)=default;
+            T& operator=(T&&)=delete;
+        };
+        REQUIRE(std::is_copy_constructible<tl::expected<T,int>>::value);
+        REQUIRE(std::is_copy_assignable<tl::expected<T,int>>::value);
+    }
+
+	{
+		tl::expected<int, int> e;
+		REQUIRE(std::is_default_constructible<decltype(e)>::value);
+		REQUIRE(std::is_copy_constructible<decltype(e)>::value);
+		REQUIRE(std::is_move_constructible<decltype(e)>::value);
+		REQUIRE(std::is_copy_assignable<decltype(e)>::value);
+		REQUIRE(std::is_move_assignable<decltype(e)>::value);
+		REQUIRE(TL_EXPECTED_IS_TRIVIALLY_COPY_CONSTRUCTIBLE(decltype(e))::value);
+		REQUIRE(TL_EXPECTED_IS_TRIVIALLY_COPY_ASSIGNABLE(decltype(e))::value);
+#	if !defined(TL_EXPECTED_GCC49)
+		REQUIRE(std::is_trivially_move_constructible<decltype(e)>::value);
+		REQUIRE(std::is_trivially_move_assignable<decltype(e)>::value);
+#	endif
+	}
+
+	{
+		tl::expected<int, std::string> e;
+		REQUIRE(std::is_default_constructible<decltype(e)>::value);
+		REQUIRE(std::is_copy_constructible<decltype(e)>::value);
+		REQUIRE(std::is_move_constructible<decltype(e)>::value);
+		REQUIRE(std::is_copy_assignable<decltype(e)>::value);
+		REQUIRE(std::is_move_assignable<decltype(e)>::value);
+		REQUIRE(!TL_EXPECTED_IS_TRIVIALLY_COPY_CONSTRUCTIBLE(decltype(e))::value);
+		REQUIRE(!TL_EXPECTED_IS_TRIVIALLY_COPY_ASSIGNABLE(decltype(e))::value);
+#	if !defined(TL_EXPECTED_GCC49)
+		REQUIRE(!std::is_trivially_move_constructible<decltype(e)>::value);
+		REQUIRE(!std::is_trivially_move_assignable<decltype(e)>::value);
+#	endif
+	}
+
+	{
+		tl::expected<std::string, int> e;
+		REQUIRE(std::is_default_constructible<decltype(e)>::value);
+		REQUIRE(std::is_copy_constructible<decltype(e)>::value);
+		REQUIRE(std::is_move_constructible<decltype(e)>::value);
+		REQUIRE(std::is_copy_assignable<decltype(e)>::value);
+		REQUIRE(std::is_move_assignable<decltype(e)>::value);
+		REQUIRE(!TL_EXPECTED_IS_TRIVIALLY_COPY_CONSTRUCTIBLE(decltype(e))::value);
+		REQUIRE(!TL_EXPECTED_IS_TRIVIALLY_COPY_ASSIGNABLE(decltype(e))::value);
+#	if !defined(TL_EXPECTED_GCC49)
+		REQUIRE(!std::is_trivially_move_constructible<decltype(e)>::value);
+		REQUIRE(!std::is_trivially_move_assignable<decltype(e)>::value);
+#	endif
+	}
+
+	{
+		tl::expected<std::string, std::string> e;
+		REQUIRE(std::is_default_constructible<decltype(e)>::value);
+		REQUIRE(std::is_copy_constructible<decltype(e)>::value);
+		REQUIRE(std::is_move_constructible<decltype(e)>::value);
+		REQUIRE(std::is_copy_assignable<decltype(e)>::value);
+		REQUIRE(std::is_move_assignable<decltype(e)>::value);
+		REQUIRE(!TL_EXPECTED_IS_TRIVIALLY_COPY_CONSTRUCTIBLE(decltype(e))::value);
+		REQUIRE(!TL_EXPECTED_IS_TRIVIALLY_COPY_ASSIGNABLE(decltype(e))::value);
+#	if !defined(TL_EXPECTED_GCC49)
+		REQUIRE(!std::is_trivially_move_constructible<decltype(e)>::value);
+		REQUIRE(!std::is_trivially_move_assignable<decltype(e)>::value);
+#	endif
+	}
+
+}
+
+
+#endif