下载googletest

Release v1.14.0 · google/googletest · GitHub

将googletest解压到项目目录并创建build文件夹

在googletest目录中创建build文件夹

编译googletest

在build文件夹下打开powershell，执行以下命令进行编译

cmake .. -G "MinGW Makefile"
# 如果不行也可以执行下面的命令
# cmake .. -G "Visual Studio 17 2022"

cmake --build .

编译完成后会在build文件夹下生成若干文件

在项目的CMakeLists.txt文件中添加相关依赖

项目结构如图所示：

使用的CMakeLists.txt文件如下：

cmake_minimum_required(VERSION 3.25)
project(CppLearnAndTest)

set(CMAKE_CXX_STANDARD 23)

# 添加googletest子目录
add_subdirectory(googletest-1.14.0)

# 指定可执行文件的产生路径
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY  ${CMAKE_CURRENT_SOURCE_DIR}/cmake-build-debug)

# gtest 头文件
include_directories(googletest-1.14.0/googletest/include)

# gmock 头文件
include_directories(googletest-1.14.0/googlemock/include)

# 指定静态链接文件目录
link_directories(${PROJECT_SOURCE_DIR}/googletest-1.14.0/build/lib/Debug)

# 构建可执行文件
add_executable(CppLearnAndTest leetcode/easy/lc1/lc1.cpp)

# 设置依赖并执行链接
set(GTEST_LIBS gtest gmock gtest_main gmock_main pthread)
target_link_libraries(CppLearnAndTest ${GTEST_LIBS})

其中的文件路径要按实际情况处理。

编写测试并执行

以两数之和为例，完整文件如下

#include "gtest/gtest.h"
#include "vector"

using namespace std;

class Solution {
public:
    vector<int> twoSum(vector<int>& nums, int target) {
        int n = nums.size();
        for (int i = 0; i < n; ++i) {
            for (int j = i + 1; j < n; ++j) {
                if (nums[i] + nums[j] == target) {
                    return {i, j};
                }
            }
        }
        return {};
    }
};

TEST(lc1, test_1) {
    vector<int> input = {2,7,11,15};
    int target = 9;
    vector<int> ret = {0,1};

    Solution s = Solution();
    EXPECT_EQ(ret, s.twoSum(input, target));
}

TEST(lc1, test_2) {
    vector<int> input = {3,2,4};
    int target = 6;
    vector<int> ret = {1,2};

    Solution s = Solution();
    EXPECT_EQ(ret, s.twoSum(input, target));
}

TEST(lc1, test_3) {
    vector<int> input = {3,3};
    int target = 6;
    vector<int> ret = {0,1};

    Solution s = Solution();
    EXPECT_EQ(ret, s.twoSum(input, target));
}

int main(int argc, char **argv) {
    ::testing::InitGoogleTest(&argc, argv);
    return RUN_ALL_TESTS();
}

参考

googletest windows平台安装使用_window安装googletest build type-CSDN博客

windows从零搭建googlemock之c++测试工程（CLion）_gmock多线程-CSDN博客

使用 cmake 对 googletest 的依赖问题：gtest/gtest.h 没有这样的文件或目录答案 - 爱码网 (likecs.com)