本文主要探讨gtest相关内容。
gtest安装
wget -O gtest.zip https://github.com/google/googletest/archive/refs/heads/main.zip
unzip gtest.zip
cd googletest-main
mkdir bulid && cd build
cmake .. && make && make install
gtest API
TEST/TEST_F
TEST(test_case_name,test_name)
宏创建测试
TEST_F(test_case_name,test_name)
不同TestCase用同一测试数据(test_name不同)
test_case_name测试用例名,通常为测试函数名或测试类名
test_name测试名
断言宏
ASSERT_*:检测失败退出,EXPECT_*:检测失败继续执行
ASSERT_TRUE(arg),期待结果是true
ASSERT_FALSE(arg),期待结果是false
ASSERT_EQ(arg1,arg2),比较是否==
ASSERT_NE(arg1,arg2),比较是否!=
ASSERT_LT(arg1,arg2),比较是否<
ASSERT_GT(arg1,arg2),比较是否>
ASSERT_LE(arg1,arg2),比较是否<=
ASSERT_GE(arg1,arg2),比较是否>=
ASSERT_STREQ(s1,s2),比较C字符串相等
ASSERT_STRNE(s1,s2),比较C字符串不相等
ASSERT_STRCASEEQ(s1,s2)比较C字符串相等(忽略大小写)
ASSERT_STRCASENE(s1,s2)比较C字符串不相等(忽略大小写)
事件机制
TestSuite事件(局部事件)
写类继承testing::Test,实现静态方法SetUpTestCase(在第一个TestCase前执行),TearDownTestCase(在最后一个TestCase前执行)
TestCase事件(个体事件)
每个案例前后执行,需实现SetUp(单个TestCase之前执行)和TearDown方法(单个TestCase之后执行)
全局事件
写类继承testing::Environment类,需实现SetUp(TestCase之前执行)和TearDown方法(TestCase之后执行),定义全局环境对象添加到全局环境测试中
程序退出/崩溃
ASSERT_DEATH(func,des)
程序退出0(程序正常)则补满足结果打印错误描述信息
ASSERT_EXIT(func,return_func,desc)
测函数、退出码/退出信号、错误信息regex,待测函数退出值错误码/错误信号不同退出打印错误描述信息
demo1:
断言
目录:
run.sh
cmake .
make
./pro
clean.sh
rm -rf CMakeFiles CTestTestfile.cmake Makefile CMakeCache.txt cmake_install.cmake pro
clean_src.sh
rm -rf *.cc *.c *.h *.hpp *.cpp
CMakeLists.txt
CMAKE_MINIMUM_REQUIRED(VERSION 2.20) #最低版本要求
PROJECT(GooleTest) #设置工程名
SET(CMAKE_CXX_COMPILER "g++-11") #设置g++编译器
ENABLE_TESTING() #开启测试
ADD_EXECUTABLE(pro Assert.cpp AssertUnitTest.cpp) #生成可执行文件
TARGET_LINK_LIBRARIES(pro gtest_main gtest) #添加链接文件
add_test(test tset) #添加测试(测试名,测试命令)
Assert.hpp
#ifndef __ASSERT_HPP__
#define __ASSERT_HPP__
int AddNum(const int a,const int b);
int ReduceNum(const int a,const int b);
int MulNum(const int a,const int b);
int DivNum(const int a,const int b);
#endif //__ASSERT_HPP__
Assert.cpp
#include <iostream>
#include "Assert.hpp"
int AddNum(const int a,const int b)
{
return (a + b);
}
int ReduceNum(const int a,const int b)
{
return abs(a - b);
}
int MulNum(const int a,const int b)
{
return (a * b);
}
int DivNum(const int a,const int b)
{
return (a / b);
}
AssertUnitTest.cpp
#include <iostream>
#include "gtest/gtest.h"
#include "Assert.hpp"
using namespace std;
namespace
{
TEST(AssertTest,MathTest)
{
ASSERT_TRUE(AddNum(1, 1));
ASSERT_FALSE(ReduceNum(1, 1));
ASSERT_EQ(1,MulNum(1,1));
ASSERT_NE(2,MulNum(1,1));
ASSERT_LT(1,AddNum(1,1));
ASSERT_GT(3,AddNum(1,1));
ASSERT_LE(1,AddNum(1,1));
ASSERT_GE(2,AddNum(1,1));
ASSERT_STREQ("hello","hello");
ASSERT_STRNE("hello","word");
ASSERT_STRCASEEQ("hellO","Hello");
ASSERT_STRCASENE("hello","word");
}
} // namespace
结果示例:
demo2:
事件
run.sh
cmake .
make
./pro
clean.sh
rm -rf CMakeFiles CTestTestfile.cmake Makefile CMakeCache.txt cmake_install.cmake pro
clean_src.sh
rm -rf *.cc *.c *.h *.hpp *.cpp
CMakeLists.txt
CMAKE_MINIMUM_REQUIRED(VERSION 2.20) #最低版本要求
PROJECT(GooleTest) #设置工程名
SET(CMAKE_CXX_COMPILER "g++-11") #设置g++编译器
ADD_EXECUTABLE(pro Event.cpp) #生成可执行文件
TARGET_LINK_LIBRARIES(pro pthread gtest) #添加链接文件
Event.cpp
#include <iostream>
#include "gtest/gtest.h"
using namespace std;
using namespace testing;
class Ev1:public Environment
{
public:
void SetUp()
{
cout << "global event1 start" << endl;
}
void TearDown()
{
cout << "global event1 end" << endl;
}
};
class Ev2:public Environment
{
public:
void SetUp()
{
cout << "global event2 start" << endl;
}
void TearDown()
{
cout << "global event2 end" << endl;
}
};
class Ev3:public Test
{
protected:
static void SetUpTestSuite()
{
cout << "local event3 start" << endl;
}
static void TearDownTestSuite()
{
cout << "loacal event3 end" << endl;
}
};
class Ev4:public Test
{
protected:
static void SetUpTestSuite()
{
cout << "local event4 start" << endl;
}
static void TearDownTestSuite()
{
cout << "loacal event4 end" << endl;
}
};
class Ev5:public Test
{
protected:
virtual void SetUp()
{
cout << "individual event5 start" << endl;
}
virtual void TearDown()
{
cout << "individual event5 end" << endl;
}
};
class Ev6:public Test
{
protected:
virtual void SetUp()
{
cout << "individual event6 start" << endl;
}
virtual void TearDown()
{
cout << "individual event6 end" << endl;
}
};
TEST_F(Ev3,EnvT0)
{
ASSERT_EQ(1,1);
}
TEST_F(Ev3,EnvT1)
{
ASSERT_EQ(1,1);
}
TEST_F(Ev4,EnvT0)
{
ASSERT_EQ(1,1);
}
TEST_F(Ev4,EnvT1)
{
ASSERT_EQ(1,1);
}
TEST_F(Ev5,EnvT0)
{
ASSERT_EQ(1,1);
}
TEST_F(Ev5,EnvT1)
{
ASSERT_EQ(1,1);
}
TEST_F(Ev6,EnvT0)
{
ASSERT_EQ(1,1);
}
TEST_F(Ev6,EnvT1)
{
ASSERT_EQ(1,1);
}
int main()
{
AddGlobalTestEnvironment(new Ev1());
AddGlobalTestEnvironment(new Ev2());
InitGoogleTest();
return RUN_ALL_TESTS();
}
结果示例:
demo3:
程序退出/崩溃
目录:
run.sh
cmake .
make
./pro
clean.sh
rm -rf CMakeFiles CTestTestfile.cmake Makefile CMakeCache.txt cmake_install.cmake pro
clean_src.sh
rm -rf *.cc *.c *.h *.hpp *.cpp
CMakeLists.txt
CMAKE_MINIMUM_REQUIRED(VERSION 2.20) #最低版本要求
PROJECT(GooleTest) #设置工程名
SET(CMAKE_CXX_COMPILER "g++-11") #设置g++编译器
ADD_EXECUTABLE(pro Exit.cpp) #生成可执行文件
TARGET_LINK_LIBRARIES(pro pthread gtest) #添加链接文件
Exit.cpp
#include <iostream>
#include <unistd.h>
#include "gtest/gtest.h"
using namespace std;
using namespace testing;
void DeathTest1()
{
cerr << "DeathTest1 ,exit(1)" << endl;
exit(1);
}
void DeathTest2()
{
cerr << "DeathTest2 ,exit(0)" << endl;
exit(0);
}
void ExitTest1()
{
cerr << "ExitTest1 ,exit(1)" << endl;
exit(1);
}
void ExitTest2()
{
cerr << "ExitTest2 ,exit(0)" << endl;
exit(0);
}
TEST(ExitTest,ExitT)
{
ASSERT_EXIT(ExitTest1(),ExitedWithCode(1),".*");
ASSERT_EXIT(ExitTest2(),ExitedWithCode(0),".*");
}
TEST(DeathTest,DeathT)
{
ASSERT_DEATH(DeathTest1(),".*");
//ASSERT_DEATH(DeathTest2(),".*");
}
int main()
{
InitGoogleTest();
return RUN_ALL_TESTS();
}
结果示例: