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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <google/protobuf/stubs/common.h>
#include <google/protobuf/test_util.h>
#include <google/protobuf/unittest.pb.h>
#include <gtest/gtest.h>
#if LANG_CXX11
#include <type_traits>
#endif
namespace google {
namespace protobuf {
namespace compiler {
namespace cpp {
// Can't use an anonymous namespace here due to brokenness of Tru64 compiler.
namespace cpp_unittest {
// Moves are enabled only when compiling with a C++11 compiler or newer.
#if LANG_CXX11
TEST(MovableMessageTest, MoveConstructor) {
protobuf_unittest::TestAllTypes message1;
TestUtil::SetAllFields(&message1);
const auto* nested = &message1.optional_nested_message();
protobuf_unittest::TestAllTypes message2(std::move(message1));
TestUtil::ExpectAllFieldsSet(message2);
// Check if the optional_nested_message was actually moved (and not just
// copied).
EXPECT_EQ(nested, &message2.optional_nested_message());
EXPECT_NE(nested, &message1.optional_nested_message());
}
TEST(MovableMessageTest, MoveAssignmentOperator) {
protobuf_unittest::TestAllTypes message1;
TestUtil::SetAllFields(&message1);
const auto* nested = &message1.optional_nested_message();
protobuf_unittest::TestAllTypes message2;
message2 = std::move(message1);
TestUtil::ExpectAllFieldsSet(message2);
// Check if the optional_nested_message was actually moved (and not just
// copied).
EXPECT_EQ(nested, &message2.optional_nested_message());
EXPECT_NE(nested, &message1.optional_nested_message());
}
TEST(MovableMessageTest, SelfMoveAssignment) {
// The `self` reference is necessary to defeat -Wself-move.
protobuf_unittest::TestAllTypes message, &self = message;
TestUtil::SetAllFields(&message);
message = std::move(self);
TestUtil::ExpectAllFieldsSet(message);
}
TEST(MovableMessageTest, MoveSameArena) {
Arena arena;
auto* message1_on_arena =
Arena::CreateMessage<protobuf_unittest::TestAllTypes>(&arena);
TestUtil::SetAllFields(message1_on_arena);
const auto* nested = &message1_on_arena->optional_nested_message();
auto* message2_on_arena =
Arena::CreateMessage<protobuf_unittest::TestAllTypes>(&arena);
// Moving messages on the same arena should lead to swapped pointers.
*message2_on_arena = std::move(*message1_on_arena);
EXPECT_EQ(nested, &message2_on_arena->optional_nested_message());
}
TEST(MovableMessageTest, MoveDifferentArenas) {
Arena arena1, arena2;
auto* message1_on_arena =
Arena::CreateMessage<protobuf_unittest::TestAllTypes>(&arena1);
TestUtil::SetAllFields(message1_on_arena);
const auto* nested = &message1_on_arena->optional_nested_message();
auto* message2_on_arena =
Arena::CreateMessage<protobuf_unittest::TestAllTypes>(&arena2);
// Moving messages on two different arenas should lead to a copy.
*message2_on_arena = std::move(*message1_on_arena);
EXPECT_NE(nested, &message2_on_arena->optional_nested_message());
TestUtil::ExpectAllFieldsSet(*message1_on_arena);
TestUtil::ExpectAllFieldsSet(*message2_on_arena);
}
TEST(MovableMessageTest, MoveFromArena) {
Arena arena;
auto* message1_on_arena =
Arena::CreateMessage<protobuf_unittest::TestAllTypes>(&arena);
TestUtil::SetAllFields(message1_on_arena);
const auto* nested = &message1_on_arena->optional_nested_message();
protobuf_unittest::TestAllTypes message2;
// Moving from a message on the arena should lead to a copy.
message2 = std::move(*message1_on_arena);
EXPECT_NE(nested, &message2.optional_nested_message());
TestUtil::ExpectAllFieldsSet(*message1_on_arena);
TestUtil::ExpectAllFieldsSet(message2);
}
TEST(MovableMessageTest, MoveToArena) {
Arena arena;
protobuf_unittest::TestAllTypes message1;
TestUtil::SetAllFields(&message1);
const auto* nested = &message1.optional_nested_message();
auto* message2_on_arena =
Arena::CreateMessage<protobuf_unittest::TestAllTypes>(&arena);
// Moving to a message on the arena should lead to a copy.
*message2_on_arena = std::move(message1);
EXPECT_NE(nested, &message2_on_arena->optional_nested_message());
TestUtil::ExpectAllFieldsSet(message1);
TestUtil::ExpectAllFieldsSet(*message2_on_arena);
}
TEST(MovableMessageTest, Noexcept) {
EXPECT_TRUE(
std::is_nothrow_move_constructible<protobuf_unittest::TestAllTypes>());
EXPECT_TRUE(std::is_nothrow_move_assignable<protobuf_unittest::TestAllTypes>());
}
#endif // LANG_CXX11
} // namespace cpp_unittest
} // namespace cpp
} // namespace compiler
} // namespace protobuf
} // namespace google
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