diff options
Diffstat (limited to 'src/google/protobuf/compiler/cpp/cpp_move_unittest.cc')
-rw-r--r-- | src/google/protobuf/compiler/cpp/cpp_move_unittest.cc | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/src/google/protobuf/compiler/cpp/cpp_move_unittest.cc b/src/google/protobuf/compiler/cpp/cpp_move_unittest.cc new file mode 100644 index 00000000..f72a7d60 --- /dev/null +++ b/src/google/protobuf/compiler/cpp/cpp_move_unittest.cc @@ -0,0 +1,169 @@ +// 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 <google/protobuf/stubs/type_traits.h> +#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 |