1. GoogleTest 安装， 基于gtest V1.10

git clone https://github.com/google/googletest
cd googletest
cmake CMakeLists.txt
make
sudo cp lib/lib*.a  /usr/lib
sudo cp –a googletest/include/gtest /usr/include
sudo cp –a googlemock/include/gmock /usr/include

2. 用法小结

2.1 简单测试安装

#include<gtest/gtest.h>
int add(int a,int b){
    return a+b;
}
TEST(testCase,test0){
    EXPECT_EQ(add(2,3),5);
}
int main(int argc,char **argv){
  testing::InitGoogleTest(&argc,argv);
  return RUN_ALL_TESTS();
}

2.2 系统测试

#include <iostream>
#include <gtest/gtest.h>

using namespace std;

class Student {
public:
  Student() : age_(0){}
  Student(int a): age_(a){}

  void print() {
    cout << "*******"<<age_<<"*********"<<endl;
  }

private:
  int age_;
};


class FooEnviroment : public testing::Environment {
public:
  virtual void SetUp() {
    cout << "Foo FooEnvironment SetUp" << endl;
  }

  virtual void TearDown() {
    cout << "Foo FooEnviroment TearDown" << endl;
  }
};

class TestMap : public testing::Test {
public:
  void SetUp() override {
    cout << "Call TestMap SetUp functions." << endl;
  }

  void TearDown() override {
    cout << "Call TestMap TearDown functions." << endl;
  }

  static void SetUpTestSuite() {
    cout << "Call TestMap SetUpTestSuite." << endl;
  }

  static void TearDownTestSuite() {
    cout << "Call TestMap TearDownTestSuite." << endl;
  }

  void Print() {
    s_.print();
  }



private:
  Student s_;
};

TEST_F(TestMap, Test1) {
  cout << "Test1 starts" << endl;
  Print();
}

TEST_F(TestMap, Test2) {
  cout << "Test2 starts" << endl;
  Print();
}

int main(int argc, char * argv[]) {
  testing::AddGlobalTestEnvironment(new FooEnviroment);
  testing::InitGoogleTest(&argc, argv);
  return RUN_ALL_TESTS();
}

输出结果

[==========] Running 2 tests from 1 test suite.
[----------] Global test environment set-up.
Foo FooEnvironment SetUp
[----------] 2 tests from TestMap
Call TestMap SetUpTestSuite.
[ RUN      ] TestMap.Test1
Call TestMap SetUp functions.
Test1 starts
*******0*********
Call TestMap TearDown functions.
[       OK ] TestMap.Test1 (0 ms)
[ RUN      ] TestMap.Test2
Call TestMap SetUp functions.
Test2 starts
*******0*********
Call TestMap TearDown functions.
[       OK ] TestMap.Test2 (0 ms)
Call TestMap TearDownTestSuite.
[----------] 2 tests from TestMap (0 ms total)

[----------] Global test environment tear-down
Foo FooEnviroment TearDown
[==========] 2 tests from 1 test suite ran. (1 ms total)
[  PASSED  ] 2 tests.