C++单元测试框架gtest使用

原理

gtest主要由一系列的宏和事件实现。 宏：有TEST和TEST_F宏，TEST宏针对简单的测试用例，TEST_F宏针对需要做初始化和资源回收的测试用例，有点像类似C++的构造函数和析构函数，两个宏都是把参数展开后拼成一个类。
1. 事件：分为三种事件 　　

   #include <iostream>
   
   #include <gtest/gtest.h>
   
   using namespace std;
   
   class MyEnvironment0 : public testing::Environment {
   public:
   virtual void SetUp() {
   cout << "Global event0 : start1" << endl;
   }
   
   virtual void TearDown() {
   cout << "Global event0 : end" << endl;
   }
   };
   
   class MyEnvironment1 : public testing::Environment {
   public:
   virtual void SetUp() {
   cout << "Global event1 : start" << endl;
   }
   
   virtual void TearDown() {
   cout << "Global event1 : end" << endl;
   }
   };
   
   TEST(GlobalTest0, test0) {
   EXPECT_EQ(1, 1);
   };
   
   TEST(GlobalTest0, test1) {
   EXPECT_EQ(1, 1);
   };
   
   TEST(GlobalTest1, test0) {
   EXPECT_EQ(1, 1);
   };
   
   int main(int argc, char *argv[]) {
   testing::AddGlobalTestEnvironment(new MyEnvironment0);
   testing::AddGlobalTestEnvironment(new MyEnvironment1);
   
   testing::InitGoogleTest(&argc, argv);
   
   return RUN_ALL_TESTS();
   }

   View Code

    

 代码：

#include <iostream>

#include <gtest/gtest.h>

using namespace std;

class MyTestSuite0 : public testing::Test
{
protected:
// 网上大部分写的是SetUpTestSuite，google后面升级版本了，改成SetUpTestCase
// 相关讨论：https://stackoverflow.com/questions/54468799/google-test-using-setuptestsuite-doesnt-seem-to-work
static void SetUpTestCase()
{
cout << "TestSuite event0 : start" << endl;
}

static void TearDownTestCase()
{
cout << "TestSuite event0 : end" << endl;
}
};

class MyTestSuite1 : public testing::Test
{
protected:
static void SetUpTestCase()
{
cout << "TestSuite event1 : start" << endl;
}

static void TearDownTestCase()
{
cout << "TestSuite event1 : end" << endl;
}
};

// 必须用TEST实现，实现上是拼成一个类MyTestSuite0_test0
TEST_F(MyTestSuite0, test0)
{
EXPECT_EQ(1, 1);
}

TEST_F(MyTestSuite1, test0)
{
EXPECT_EQ(1, 1);
}

TEST_F(MyTestSuite0, test1)
{
EXPECT_EQ(1, 1);
}

TEST_F(MyTestSuite1, test1)
{
EXPECT_EQ(1, 1);
}

//int main(int argc, char *argv[])
//{
//    testing::InitGoogleTEST_F(&argc, argv);
//
//    return RUN_ALL_TESTS();
//}

View Code

 

代码：

#include <iostream>

#include <gtest/gtest.h>

using namespace std;

class MyTestCase0 : public testing::Test
{
protected:
virtual void SetUp()
{
cout << "TestCase event0 : start" << endl;
}

virtual void TearDown()
{
cout << "TestCase event0 : end" << endl;
}
};

class MyTestCase1 : public testing::Test
{
protected:
virtual void SetUp()
{
cout << "TestCase event1 : start" << endl;
}
virtual void TearDown()
{
cout << "TestCase event1 : end" << endl;
}
};

TEST_F(MyTestCase0, test0)
{
EXPECT_EQ(1, 1);
}

TEST_F(MyTestCase0, test1)
{
EXPECT_EQ(1, 1);
}

TEST_F(MyTestCase1, test0)
{
EXPECT_EQ(1, 1);
}

TEST_F(MyTestCase1, test1)
{
EXPECT_EQ(1, 1);
}

int main(int argc, char *argv[])
{
testing::InitGoogleTest(&argc, argv);

return RUN_ALL_TESTS();
}

View Code

 

代码

上传到个人github中：https://github.com/longbozhan/sample/tree/master/gtest

参考

https://www.shuzhiduo.com/A/n2d9gnDgJD/
1. https://google.github.io/googletest/