Installation and use of GTEST and gmock

background

The project of the company adopts gtest For unit testing （ In fact, Huawei Hisilicon also used gtest, But the benefits of big factories （ Or it can also be said to be bad - dog head） Just don't care about these things ）, Need to install gtest;
I was in docker Installed below , The steps should be the same ;

step

Source download

adopt git To download , Source code installation ：

git clone https://github.com/google/googletest

compile

After downloading, a googletest Folder , After entering , adopt cmake To compile the , Enter the following 3 Command and execute ：

cd googletest
cmake3 CMakeLists.txt
make 

Be careful ： According to personal cmake Set to , I installed cmake3, And no redirection , So it is cmake3

Header files and static library copies

My current version , In addition to downloading googletest Out of the folder , stay googletest There is another one in the catalog googletest , That is to say, the directory structure is ： googletest/googletest – Use..., respectively googletest_1 and googletest_2 To specifically refer to 2 A directory file

You can also see from the screenshot above , stay googletest_1 Except for googletest_2 Outside , One more googlemock, this 2 One is the goal ：gtest and gmock

Static library copy

Static library generated after compilation ：gtest(libgtest.a、libgtest_main.a) 、gmock(libgmock.a、libgmock_main.a); The directory is ：
googletest_1 Under the lib Next ：

Will these .a File copy to /usr/lib Under the table of contents ：

cp ./lib/* /usr/lib 

Header file copy

The header file is in googletest_2 Under the include Catalog ：

Need to put include Under the gtest Copy all directories to /usr/include Under the table of contents ：

cp –a include/gtest /usr/include

alike , hold googletest_1 Under the googlemock In the directory include Under the gmock Copy it all to /usr/include Under the table of contents ：
（ You need to get into googletest_1 Of googlemock Under the table of contents ）

cp –a include/gmock /usr/include

test

You can test through the following test code gtest Is the installation successful ：

#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();
}

Execute after compilation ：

g++  test.cc -lgtest -lpthread
./a.out

Process and results ：