Gtest 介绍

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q Install Gtest

1. Uncompress install package: gtest-1.7.0.zip

2. Compile as below:

g++ -I /home/yinhr/gtest-1.7.0/include -I /home/yinhr/gtest-1.7.0/ -c /home/yinhr/gtest-1.7.0/src/gtest-all.cc

ar -rv libgtest.a gtest-all.o

3. If compile success, it will generate a static library file : libgtest.a

q Install Gmock (used to add stub for a function)

1. Uncompress install package: gmock-1.7.0.zip

2. cd /make

make

cd .. (go to gmock-1.7.0) run below command:

g++ -I gtest/include/ -I gtest/ -I include/ -I ./ -c gtest/src/gtest-all.cc

g++ -I gtest/include/ -I gtest/ -I include/ -I ./ -c src/gmock-all.cc

ar -rv libgmock.a gtest-all.o gmock-all.o

3. If compile success, will generate the static library file : libgmock.a

v Comment：

libgmock.a has included the gtest-all.cc which needed by gtest. So we only need link libgmock.a

1. Add path /unitTest and /gtest/inc in INCLUDE_DIRECTORIES

2. Add path /unitTest in AUX_SOURCE_DIRECTORY

3. Add gtest/lib in link_directories and add gtest in TARGET_LINK_LIBRARIES

项目CMakeLists.txt文件要添加头文件和库文件的引用，

#project name

PROJECT(test_gtest)

#head file path

INCLUDE_DIRECTORIES(

…….

${test_gtest_SOURCE_DIR}/gtest/inc #添加gtest头文件目录

)

LINK_DIRECTORIES(${test_gtest_SOURCE_DIR}/gtest/lib) #添加gtest库文件目录

#source directory

AUX_SOURCE_DIRECTORY(${test_gtest_SOURCE_DIR}/src DIR_SRCS)

#add executable file

ADD_EXECUTABLE(testgcc ${DIR_SRCS})

TARGET_LINK_LIBRARIES(testgcc gmock) #链接静态库

SET(SMARTTHINGS_INC ......

${SMARTTHINGS_DIR}/smarthome

${SMARTTHINGS_DIR}/unitTest

${SMARTTHINGS_DIR}/gtest/inc)

INCLUDE_DIRECTORIES(${SMARTTHINGS_INC})

......

AUX_SOURCE_DIRECTORY(${SMARTTHINGS_DIR}/smarthome SMARTHOME_SRC)

AUX_SOURCE_DIRECTORY(${SMARTTHINGS_DIR}/unitTest UNITTEST_SRC)

SET(SMARTTHINGS_SRC …… ${SMARTHOME_SRC}

${UNITTEST_SRC} )

……

link_directories(/usr/lib/gstreamer-0.10)

link_directories(${SMARTTHINGS_DIR}/gtest/lib)

TARGET_LINK_LIBRARIES(${PROJECT_NAME} ${PKGS_LDFLAGS} gtest gstplayermixer -lm)

q Create UnitTest folder

ü All TC files are in this folder

q Create gtest folder

ü All gtest head files and library files are in this folder

UT的例子

TEST(EVENTMANAGER_SUIT, Register_2)

{

CEventManager* pEventManager = CEventManager::GetInstance();

int nClientId = 1;

EXPECT_TRUE(pEventManager>Register(funcCallback,NULL,&nClientId));

}

TEST(EVENTMANAGER_SUIT, SubscribeEvent_1)

{

CEventManager* pEventManager = CEventManager::GetInstance();

int nClientId = 1;

pEventManager->Register(funcCallback,NULL,&nClientId);

EXPECT_FALSE(pEventManager->SubscribeEvent(nClientId + 1, 1));

}

TEST(EVENTMANAGER_SUIT, SubscribeEvent_2)

{

CEventManager* pEventManager = CEventManager::GetInstance();

int nClientId = 1;

pEventManager->Register(funcCallback,NULL,&nClientId);

EXPECT_TRUE(pEventManager->SubscribeEvent(nClientId, 1));

}

打桩

include "CSubscriber.h"

CSubscriber::CSubscriber(int fd)

{

}

CSubscriber::~CSubscriber()

{

}

int CSubscriber::readBuf(int len) //待打桩的原函数定义

{

return 1000;

}

int CSubscriber::writeBuf(int len)

{

return 2000;

}

Foo.h

#ifndef __FOO_H__

#define __FOO_H__

class Cal

{

public:

Cal(void);

static int max(int a, int b);

};

#endif

Foo.cpp ：

#include "foo.h"

#include "CSubscriber.h"

Cal::Cal(void)

{

}

int Cal::max(int a ,int b)

{

CSubscriber cs(5);

cs.readBuf(2000); //此方法需要打桩

return a > b ? a : b;

}

#include "gtest/gtest.h"

#include "gmock/gmock.h"

using ::testing::AtLeast;

using testing::Return;

class CSubscriber

{

public:

CSubscriber(int fd);

virtual ~CSubscriber();

//function return:

//0: means complete read, all elements parsed OK

//1: means it need recv more buf, not it's not complete

//-1: means the packet is not valid.

//-2: means connection wrong.

int readBuf(int len);

int writeBuf(int len);

void closeSock();

//max send buf length

static int m_iSendBufLen;

//max recv buf length

static int m_iRecvBufLen;

};

class CPublisher

{

public:

CPublisher(int fd);

virtual ~CPublisher();

int readBuf(int len);

int writeBuf(int len);

void closeSock();

};

////////// 需要开发者自己写打桩函数如下：构造一个新的类，继承待打桩函数所属类，为//////////每个方法添加一个MOCK_METHOD1方法，

////////// 参数解释: (函数名,函数返回值(函数参数列表))

class MockCSubscriber : public CSubscriber

{

public:

MockCSubscriber(int fd):CSubscriber(fd){}

MOCK_METHOD1(readBuf, int(int len));

MOCK_METHOD1(writeBuf, int(int len));

MOCK_METHOD0(closeSock, void());

};

class MockCPublisher : public CPublisher

{

public:

MockCPublisher(int fd):CPublisher(fd){}

MOCK_METHOD1(readBuf, int(int len));

MOCK_METHOD1(writeBuf, int(int len));

MOCK_METHOD0(closeSock, void());

};

UT：

#include "gtest/gtest.h"

#include "gmock/gmock.h"

#include "foo.h"

#include "CSubscriber.h"

using ::testing::Return;

TEST(foo, max)

{

/*EXPECT_EQ(-1, max(2,-1));

EXPECT_EQ(3, max(2,3));*/

MockCSubscriber subObj(5);

ON_CALL(subObj, readBuf(1000)).WillByDefault(Return(2));

int returnValue = subObj.readBuf(1000);

EXPECT_EQ (returnValue,Cal::max(2,3));

}

int main(int argc, char** argv)

{

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

return RUN_ALL_TESTS();

}

执行以下命令：

cd /build

cmake ..

make

执行完成会后，build文件目录里如下，目录里有一个可执行文件testgtest：

执行./testgtest

§ Primer Guide: http://code.google.com/p/googletest/wiki/V1_6_Primer

§ Advanced Guide: http://code.google.com/p/googletest/wiki/V1_6_AdvancedGuide

§ Sample: http://code.google.com/p/googletest/wiki/V1_6_Samples

http://code.google.com/p/googletest/downloads/list

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