gtest学习

一．用 TEST() 宏声明测试函数

 

TEST(name1, name2)

{

EXPECT_EQ(value1, value2);

}

name1：测试用例名称  类名  文件名
name2：测试名称   方法名   函数名

二．初始化 googletest 并运行所有测试

int main(intargc,char** argv)

{

::testing::InitGoogleTest(&argc, argv);

returnRUN_ALL_TESTS();

}

InitGoogleTest会初始化一些环境变量，RUN_ALL_TESTS()会调用所有的TEST(name1, name2)

 

编译时链接-lgtest -lpthread

 

 ASSERT_* 版本的断言失败时会产生致命失败，并结束当前函数； 

EXPECT_* 版本的断言失败时产生非致命失败，但不会中止当前函数。

 

 

例子

// Configure.h 
 #pragma once 

 #include <string> 
 #include <vector> 

 class Configure 
 { 
 private: 
    std::vector<std::string> vItems; 

 public: 
    int addItem(std::string str); 

    std::string getItem(int index); 

    int getSize(); 
 }; 

// Configure.cpp 
 #include "Configure.h" 

 #include <algorithm> 

 /** 
 * @brief Add an item to configuration store. Duplicate item will be ignored 
 * @param str item to be stored 
 * @return the index of added configuration item 
 */ 
 int Configure::addItem(std::string str) 
 { 
std::vector<std::string>::const_iterator vi=std::find(vItems.begin(), vItems.end(), str); 
    if (vi != vItems.end()) 
        return vi - vItems.begin(); 

    vItems.push_back(str); 
    return vItems.size() - 1; 
 } 

 /** 
 * @brief Return the configure item at specified index. 
 * If the index is out of range, "" will be returned 
 * @param index the index of item 
 * @return the item at specified index 
 */ 
 std::string Configure::getItem(int index) 
 { 
    if (index >= vItems.size()) 
        return ""; 
    else 
        return vItems.at(index); 
 } 

 /// Retrieve the information about how many configuration items we have had 
 int Configure::getSize() 
 { 
    return vItems.size(); 
 } 

// ConfigureTest.cpp 
 #include <gtest/gtest.h> 

 #include "Configure.h" 

 TEST(ConfigureTest, addItem) 
 { 
    // do some initialization 
    Configure* pc = new Configure(); 
    
    // validate the pointer is not null 
    ASSERT_TRUE(pc != NULL); 

    // call the method we want to test 
    pc->addItem("A"); 
    pc->addItem("B"); 
    pc->addItem("A"); 

    // validate the result after operation 
    EXPECT_EQ(pc->getSize(), 2); 
    EXPECT_STREQ(pc->getItem(0).c_str(), "A"); 
    EXPECT_STREQ(pc->getItem(1).c_str(), "B"); 
    EXPECT_STREQ(pc->getItem(10).c_str(), ""); 

    delete pc; 
 }

#include <gtest/gtest.h> 

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

    // Runs all tests using Google Test. 
    return RUN_ALL_TESTS(); 
 }

g++ -c configure.cpp -lgtest -lpthread -L /usr/local/webserver/gtest/lib -I /usr/local/webserver/gtest/include 

g++ -c configuretest.cpp -lgtest -lpthread -L /usr/local/webserver/gtest/lib -I /usr/local/webserver/gtest/include 

g++ -c main.cpp -lgtest -lpthread -L /usr/local/webserver/gtest/lib -I /usr/local/webserver/gtest/include 

 g++ -o app main.o  configure.o  -lgtest -lpthread -L /usr/local/webserver/gtest/lib -I /usr/local/webserver/gtest/include