为什么这两个 Card 对象不等同？

Question

我正在实现一个 Card 对象，但我很难理解为什么我的卡片相等性测试失败了。这是声明：

// card.h
namespace Game {

    class Card {
    public:
        int rank; // 1 to 13
        char suit;

        Card(int r, char s);
        ~Card();
        Card(const Card &other); // copy constructor
        friend std::ostream& operator<<(std::ostream& out, const Card &c);
        Card &operator=(const Card &c);
        bool operator>(const Card &other);
        bool operator<(const Card &other);
        bool operator<=(const Card &other);
        bool operator>=(const Card &other);
        bool operator==(const Card &other);
        bool operator!=(const Card &other);
    };

}

以及实施

//card.cpp

Game {
    //...

    bool Game::Card::operator==(const Card &other) {
        return (this->rank == other.rank) && (this->suit == other.rank);
    }

    //...
}

在我的测试文件中，它使用 googletest

// CardTests.cpp
#include "gtest/gtest.h"
#include <string>
#include "Card.h"
TEST(CardTests, EqualsOperator) {
    Game::Card fourOfHearts1 = Game::Card(4, 'H');
    Game::Card fourOfHearts2 = Game::Card(4, 'H');
    ASSERT_TRUE(fourOfHearts1 == fourOfHearts2);
}

产生以下输出：

Value of: fourOfHearts1 == fourOfHearts2
  Actual: false
Expected: true

为什么两个 fourOfHearts 变量不相等？

Answer 1

(this->suit == other.rank); 中的错字我猜应该是 (this->suit== other.suit);

为什么这两个 Card 对象不等同？

Why do these two Card objects not equate?

c++

oop

equality

operator-overloading