直接下载https://github.com/google/googletest/releases
以版本1.8.1为例，使用Visual Studio 2017
QQ图片20220126142243.png
第一步：运行"gtest.sln"生成debug版本库gtestd.lib和release版本库gtest.lib。
第二步：创建测试工程，将"googletest\include"下的头文件gtest拷贝到工程目录下；
第三步：将第一步生成的debug库拷贝到工程木下；
工程配置头文件目录和lib库如下图
QQ图片20220126142658.png
第四步：链接器->输入lib库，否则会报找不到符号的错误；
QQ图片20220126142925.png
第五步：C/C++->代码生成
QQ图片20220126143710.png
以上即为getest的添加。
编写测试用例测试即可
// GoogleTest.cpp : 此文件包含 "main" 函数。程序执行将在此处开始并结束。
//
#include <gtest/gtest.h>
int Foo(int a, int b)
{
if (a == 0 || b == 0)
{
throw "don't do that";
}
int c = a % b;
if (c == 0)
return b;
return Foo(b, c);
}
TEST(FooTest, HandleNoneZeroInput)
{
EXPECT_EQ(2, Foo(4, 10));
EXPECT_EQ(6, Foo(30, 18));
}
TEST(FooTest2, HandleNoneZeroInput2)
{
EXPECT_EQ(2, Foo(4, 10));
EXPECT_EQ(6, Foo(30, 18));
}
int main(int argc, char** argv)
{
testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
运行结果：
QQ图片20220126143057.png
常见的错误
1>------ 已启动生成: 项目: GoogleTest, 配置: Debug Win32 ------
1>GoogleTest.obj : error LNK2019: 无法解析的外部符号 "bool __cdecl testing::internal::IsTrue(bool)" (?IsTrue@internal@testing@@YA_N_N@Z)，该符号在函数 "public: void __thiscall testing::internal::scoped_ptr<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > >::reset(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > *)" (?reset@?$scoped_ptr@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@internal@testing@@QAEXPAV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z) 中被引用
1>GoogleTest.obj : error LNK2019: 无法解析的外部符号 "public: __thiscall testing::Message::Message(void)" (??0Message@testing@@QAE@XZ)，该符号在函数 "private: virtual void __thiscall FooTest2_HandleNoneZeroInput2_Test::TestBody(void)" (?TestBody@FooTest2_HandleNoneZeroInput2_Test@@EAEXXZ) 中被引用
1>GoogleTest.obj : error LNK2019: 无法解析的外部符号 "class testing::AssertionResult __cdecl testing::internal::EqFailure(char const *,char const *,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &,bool)" (?EqFailure@internal@testing@@YA?AVAssertionResult@2@PBD0ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@1_N@Z)，该符号在函数 "class testing::AssertionResult __cdecl testing::internal::CmpHelperEQFailure<int,int>(char const *,char const *,int const &,int const &)" (??$CmpHelperEQFailure@HH@internal@testing@@YA?AVAssertionResult@1@PBD0ABH1@Z) 中被引用
1>GoogleTest.obj : error LNK2019: 无法解析的外部符号 "void const * __cdecl testing::internal::GetTestTypeId(void)" (?GetTestTypeId@internal@testing@@YAPBXXZ)，该符号在函数 "void __cdecl `dynamic initializer for 'private: static class testing::TestInfo * FooTest2_HandleNoneZeroInput2_Test::test_info_''(void)" (??__E?test_info_@FooTest2_HandleNoneZeroInput2_Test@@0QAVTestInfo@testing@@A@@YAXXZ) 中被引用
1>GoogleTest.obj : error LNK2019: 无法解析的外部符号 "class testing::TestInfo * __cdecl testing::internal::MakeAndRegisterTestInfo(char const *,char const *,char const *,char const *,struct testing::internal::CodeLocation,void const *,void (__cdecl*)(void),void (__cdecl*)(void),class testing::internal::TestFactoryBase *)" (?MakeAndRegisterTestInfo@internal@testing@@YAPAVTestInfo@2@PBD000UCodeLocation@12@PBXP6AXXZ3PAVTestFactoryBase@12@@Z)，该符号在函数 "void __cdecl `dynamic initializer for 'private: static class testing::TestInfo * FooTest2_HandleNoneZeroInput2_Test::test_info_''(void)" (??__E?test_info_@FooTest2_HandleNoneZeroInput2_Test@@0QAVTestInfo@testing@@A@@YAXXZ) 中被引用
1>GoogleTest.obj : error LNK2019: 无法解析的外部符号 "class testing::AssertionResult __cdecl testing::AssertionSuccess(void)" (?AssertionSuccess@testing@@YA?AVAssertionResult@1@XZ)，该符号在函数 "class testing::AssertionResult __cdecl testing::internal::CmpHelperEQ<int,int>(char const *,char const *,int const &,int const &)" (??$CmpHelperEQ@HH@internal@testing@@YA?AVAssertionResult@1@PBD0ABH1@Z) 中被引用
1>GoogleTest.obj : error LNK2019: 无法解析的外部符号 "public: virtual __thiscall testing::Test::~Test(void)" (??1Test@testing@@UAE@XZ)，该符号在函数 "public: virtual __thiscall FooTest2_HandleNoneZeroInput2_Test::~FooTest2_HandleNoneZeroInput2_Test(void)" (??1FooTest2_HandleNoneZeroInput2_Test@@UAE@XZ) 中被引用
1>GoogleTest.obj : error LNK2019: 无法解析的外部符号 "protected: __thiscall testing::Test::Test(void)" (??0Test@testing@@IAE@XZ)，该符号在函数 "public: __thiscall FooTest2_HandleNoneZeroInput2_Test::FooTest2_HandleNoneZeroInput2_Test(void)" (??0FooTest2_HandleNoneZeroInput2_Test@@QAE@XZ) 中被引用
1>GoogleTest.obj : error LNK2001: 无法解析的外部符号 "protected: virtual void __thiscall testing::Test::SetUp(void)" (?SetUp@Test@testing@@MAEXXZ)
1>GoogleTest.obj : error LNK2001: 无法解析的外部符号 "protected: virtual void __thiscall testing::Test::TearDown(void)" (?TearDown@Test@testing@@MAEXXZ)
1>GoogleTest.obj : error LNK2019: 无法解析的外部符号 "public: static class testing::UnitTest * __cdecl testing::UnitTest::GetInstance(void)" (?GetInstance@UnitTest@testing@@SAPAV12@XZ)，该符号在函数 "int __cdecl RUN_ALL_TESTS(void)" (?RUN_ALL_TESTS@@YAHXZ) 中被引用
1>GoogleTest.obj : error LNK2019: 无法解析的外部符号 "public: int __thiscall testing::UnitTest::Run(void)" (?Run@UnitTest@testing@@QAEHXZ)，该符号在函数 "int __cdecl RUN_ALL_TESTS(void)" (?RUN_ALL_TESTS@@YAHXZ) 中被引用
1>GoogleTest.obj : error LNK2019: 无法解析的外部符号 "void __cdecl testing::InitGoogleTest(int *,char * *)" (?InitGoogleTest@testing@@YAXPAHPAPAD@Z)，该符号在函数 _main 中被引用
1>GoogleTest.obj : error LNK2019: 无法解析的外部符号 "public: __thiscall testing::internal::AssertHelper::AssertHelper(enum testing::TestPartResult::Type,char const *,int,char const *)" (??0AssertHelper@internal@testing@@QAE@W4Type@TestPartResult@2@PBDH1@Z)，该符号在函数 "private: virtual void __thiscall FooTest2_HandleNoneZeroInput2_Test::TestBody(void)" (?TestBody@FooTest2_HandleNoneZeroInput2_Test@@EAEXXZ) 中被引用
1>GoogleTest.obj : error LNK2019: 无法解析的外部符号 "public: __thiscall testing::internal::AssertHelper::~AssertHelper(void)" (??1AssertHelper@internal@testing@@QAE@XZ)，该符号在函数 "private: virtual void __thiscall FooTest2_HandleNoneZeroInput2_Test::TestBody(void)" (?TestBody@FooTest2_HandleNoneZeroInput2_Test@@EAEXXZ) 中被引用
1>GoogleTest.obj : error LNK2019: 无法解析的外部符号 "public: void __thiscall testing::internal::AssertHelper::operator=(class testing::Message const &)const " (??4AssertHelper@internal@testing@@QBEXABVMessage@2@@Z)，该符号在函数 "private: virtual void __thiscall FooTest2_HandleNoneZeroInput2_Test::TestBody(void)" (?TestBody@FooTest2_HandleNoneZeroInput2_Test@@EAEXXZ) 中被引用
1>E:\projects\GoogleTest\Debug\GoogleTest.exe : fatal error LNK1120: 16 个无法解析的外部命令
1>已完成生成项目“GoogleTest.vcxproj”的操作 - 失败。
========== 生成: 成功 0 个，失败 1 个，最新 0 个，跳过 0 个 ==========
这是因为没有操作第四步导致的，添加即可解决。
具体使用可参考gtest的使用手册。
