Question

在我的单元测试中，我想测试GameLauncher根据Game创建包含Object个CharacterSelections的{{1}}。在Java风格的伪代码中，测试将是：

Game game = gameLauncher.createGame(characterSelections);

assertThat(game.getObjects(), containsInAnyOrder(c1, c2, c3));

当我在c ++工作时，game->getObjects()会返回vector<Object*>。我正在使用指针向量，因为Object是一种多态类型。

GMock#ContainerMatchers给出了容器的匹配器列表。由于STL容器使用operator==来确定其元素之间的相等性（请参阅github/cpp-container-equality），因此我不能简单地使用UnorderedElementsAre（...），因为这将执行指针比较。

我有什么选择？

// redacted includes

class GameLauncherTest : public testing::Test {
    // ... redacted ...
};

TEST_F(GameLauncherTest, launchesGameWithCharacterInstanceForSelectedCharacters) {
    auto const characterSelections = new CharacterSelections();
    characterSelections->add(new CharacterSelection(0, false, 1));
    characterSelections->add(new CharacterSelection(3, false, 0));
    characterSelections->add(new CharacterSelection(2, true, 1));

    Game* const game = this->gameLauncher->launchGame(characterSelections);

    auto const character0 = new Character(0, objectData1);
    auto const character1 = new Character(1, objectData0);
    auto const character2 = new Character(2, objectData1);

    const vector<Object*> inGameObjects = game->getObjects();

    // fails
    EXPECT_THAT(inGameObjects, UnorderedElementsAre(character0, character1, character2));

    delete character0;
    delete character1;
    delete character2;
    delete characterSelections;
}

Answer 1

您可以使用Pointee匹配器取消引用指针：

EXPECT_THAT(inGameObjects,
            UnorderedElementsAre(Pointee(*character0),
                                 Pointee(*character1),
                                 Pointee(*character2)));

指针容器的Gmock元素匹配器

1 个答案: