vcpkg install gtest

C:.
|   CMakeLists.txt
|   output.txt
|   run.ps1
|   tests_output.txt
|
+---.vscode
|       c_cpp_properties.json
|       settings.json
|
+---include
|       CMath.h
|       common.h
|
+---lib
|       bay.lib
|
+---src
|       CMath.cpp
|       main.cpp
|
\---test
        main.cpp

int CMath::add(int a, int b)
{
    return a + b;
}

#include <iostream>
#include "CMath.h"

int main() {
    CMath math;
    std::cout << math.add(1,2) << std::endl;
    return 0;
}

#include <gtest/gtest.h>
#include "common.h"
#include "CMath.h"

// 測(cè)試用例
TEST(AdditionTest, PositiveNumbers) {
    CMath math;
    EXPECT_EQ(math.add(1, 2), 3);
}

TEST(AdditionTest, NegativeNumbers) {
    CMath math;
    EXPECT_EQ(math.add(-1, -2), -4); //單元測(cè)試結(jié)果會(huì)報(bào)錯(cuò)
}


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

# 指定CMake的最低版本要求
cmake_minimum_required(VERSION 3.10)

# 設(shè)置項(xiàng)目名稱和語(yǔ)言
project(demo LANGUAGES CXX)

# 設(shè)置C++標(biāo)準(zhǔn)為C++17
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON) # 強(qiáng)制要求使用指定的C++標(biāo)準(zhǔn)

# 查找外部依賴包 fmt 和 spdlog
find_package(fmt CONFIG REQUIRED)
find_package(spdlog CONFIG REQUIRED)

# 遞歸查找src目錄下所有的cpp源文件，作為主程序源文件
file(GLOB_RECURSE SOURCES "${CMAKE_CURRENT_SOURCE_DIR}/src/*.cpp")

#創(chuàng)建主程序可執(zhí)行文件
add_executable(${PROJECT_NAME} ${SOURCES})

# 啟用測(cè)試功能
enable_testing()

# 遞歸查找test目錄下所有的cpp文件，作為單元測(cè)試源文件
file(GLOB_RECURSE UNIT_TEST_SOURCES "${CMAKE_CURRENT_SOURCE_DIR}/test/*.cpp")
# 查找src目錄下除main.cpp外的所有cpp文件，供測(cè)試用例復(fù)用
file(GLOB_RECURSE UNIT_TEST_SRC_SOURCES "${CMAKE_CURRENT_SOURCE_DIR}/src/*.cpp")
list(FILTER UNIT_TEST_SRC_SOURCES EXCLUDE REGEX "src/main.cpp")
# 創(chuàng)建測(cè)試可執(zhí)行文件 runUnitTests
add_executable(runUnitTests ${UNIT_TEST_SOURCES} ${UNIT_TEST_SRC_SOURCES})

# 查找GTest庫(kù)
find_package(GTest CONFIG REQUIRED)
# 鏈接GTest和GMock庫(kù)到測(cè)試可執(zhí)行文件
# 注意：這里只需鏈接gtest和gmock，不要鏈接gtest_main/gmock_main，否則main函數(shù)會(huì)沖突
target_link_libraries(runUnitTests PRIVATE GTest::gtest  GTest::gmock )

# 添加CTest測(cè)試
add_test(AllTestsInMain runUnitTests)

# 包含 GoogleTest 模塊，自動(dòng)發(fā)現(xiàn)并添加測(cè)試
include(GoogleTest)
gtest_discover_tests(runUnitTests)

# 設(shè)置主程序包含目錄
# PRIVATE表示這些包含目錄僅在當(dāng)前目標(biāo)內(nèi)部可見(jiàn)
# include/bay目錄如不存在可去除
# 下面兩處都可根據(jù)實(shí)際情況調(diào)整

# 主程序包含目錄
target_include_directories(${PROJECT_NAME} PRIVATE 
        "${CMAKE_CURRENT_SOURCE_DIR}/include"
        )
# 測(cè)試程序包含目錄
target_include_directories(runUnitTests PRIVATE 
        "${CMAKE_CURRENT_SOURCE_DIR}/include"
        )

# 鏈接外部依賴庫(kù)到主程序
# PRIVATE表示依賴不會(huì)傳遞給鏈接此目標(biāo)的其他目標(biāo)
# 如lib/bay.lib不存在可去除
# fmt和spdlog為必需

target_link_libraries(${PROJECT_NAME} PRIVATE 
    fmt::fmt            # 格式化庫(kù)
    spdlog::spdlog      # 日志庫(kù)
)

target_link_libraries(runUnitTests PRIVATE 
    fmt::fmt            # 格式化庫(kù)
    spdlog::spdlog      # 日志庫(kù)
)

# 生成構(gòu)建目錄并配置CMake工程
cmake -B build -S . -DCMAKE_TOOLCHAIN_FILE="${VCPKG_ROOTDIR}/scripts/buildsystems/vcpkg.cmake" 

# 編譯工程，若成功則運(yùn)行生成的可執(zhí)行文件
cmake --build build ; 

3
[==========] Running 2 tests from 1 test suite.
[----------] Global test environment set-up.
[----------] 2 tests from AdditionTest
[ RUN      ] AdditionTest.PositiveNumbers
[       OK ] AdditionTest.PositiveNumbers (0 ms)
[ RUN      ] AdditionTest.NegativeNumbers
C:\Users\Admin\05.gtest\test\main.cpp(13): error: Expected equality of these values:
  math.add(-1, -2)
    Which is: -3
  -4

[  FAILED  ] AdditionTest.NegativeNumbers (0 ms)
[----------] 2 tests from AdditionTest (0 ms total)

[----------] Global test environment tear-down
[==========] 2 tests from 1 test suite ran. (1 ms total)
[  PASSED  ] 1 test.
[  FAILED  ] 1 test, listed below:
[  FAILED  ] AdditionTest.NegativeNumbers

 1 FAILED TEST

cd build
ctest
# 也可采用 ctest -V  ，這樣輸出的結(jié)果會(huì)包含詳細(xì)信息

Test project C:/Users/Admin/05.gtest/build
    Start 1: AdditionTest.PositiveNumbers
1/3 Test #1: AdditionTest.PositiveNumbers .....   Passed    0.09 sec
    Start 2: AdditionTest.NegativeNumbers
2/3 Test #2: AdditionTest.NegativeNumbers .....***Failed    0.01 sec
    Start 3: AllTestsInMain
3/3 Test #3: AllTestsInMain ...................***Failed    0.01 sec

33% tests passed, 2 tests failed out of 3

Total Test time (real) =   0.13 sec

The following tests FAILED:
          2 - AdditionTest.NegativeNumbers (Failed)
          3 - AllTestsInMain (Failed)
Errors while running CTest