gtest全局套件的测试使用

#include <iostream>
#include "gtest/gtest.h"
#include <unordered_map>class MyEnvironment: public testing::Environment
{public:virtual void SetUp() override{std::cout<<"单元测试前的环境初始化！\n"<<std::endl;}virtual void TearDown() override{std::cout<<"单元测试执行后的环境清理\n"<<std::endl;}private:
};TEST(MyEnvironment,test1)
{std::cout<<"单元测试1\n";
}TEST(MyEnvironment,test2)
{std::cout<<"单元测试2\n";
}std::unordered_map<std::string,std::string> mymap;
class MapTest:public testing::Environment
{public:virtual void SetUp() override{std::cout<<"单元测试前的环境初始化！\n"<<std::endl;mymap.insert(std::make_pair("hello","你好"));mymap.insert(std::make_pair("bye","再见"));}virtual void TearDown() override{std::cout<<"单元测试执行后的环境清理\n"<<std::endl;mymap.clear();}
};
TEST(MapTest,test1)
{ASSERT_EQ(mymap.size(),2);mymap.erase("hello");
}TEST(MapTest,test2)
{ASSERT_EQ(mymap.size(),2);
}
int main(int argc,char*argv[])
{testing::InitGoogleTest(&argc,argv);testing::AddGlobalTestEnvironment(new MyEnvironment);testing::AddGlobalTestEnvironment(new MapTest);RUN_ALL_TESTS();return 0;
}

运行结果：

root@VM-4-5-ubuntu:~/demo/gtest# ./global
[==========] Running 4 tests from 2 test suites.
[----------] Global test environment set-up.
单元测试前的环境初始化！单元测试前的环境初始化！[----------] 2 tests from MyEnvironment
[ RUN      ] MyEnvironment.test1
单元测试1
[       OK ] MyEnvironment.test1 (0 ms)
[ RUN      ] MyEnvironment.test2
单元测试2
[       OK ] MyEnvironment.test2 (0 ms)
[----------] 2 tests from MyEnvironment (1 ms total)[----------] 2 tests from MapTest
[ RUN      ] MapTest.test1
[       OK ] MapTest.test1 (0 ms)
[ RUN      ] MapTest.test2
global.cc:53: Failure
Expected equality of these values:mymap.size()Which is: 12
[  FAILED  ] MapTest.test2 (0 ms)
[----------] 2 tests from MapTest (0 ms total)[----------] Global test environment tear-down
单元测试执行后的环境清理单元测试执行后的环境清理[==========] 4 tests from 2 test suites ran. (1 ms total)
[  PASSED  ] 3 tests.
[  FAILED  ] 1 test, listed below:
[  FAILED  ] MapTest.test21 FAILED TEST