如何编译google test的例子？

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How to build samples of Google Test?

 

In the source of google test, it provides some samples to show how to use google test. In this article, we describe how to build these samples.

 

1. an example to build a sample

 

The source of google test provides a sample to build its exmaple. It is in ../make.

This example is to build sample1_unittest, it is in ../samples.

The source code to be tested is in file sample1.cc & sample1.h.

The unit test code is in file sample1_unittest.cc.

# /usr/src/gtest-1.5.0

# cd make

# make

# ./sample1_unittest

The result of build is in ../make, then, we can run sample1_unittest, as follows.

root@yu29:/usr/src/gtest-1.5.0/make# ./sample1_unittest

Running main() from gtest_main.cc

[==========] Running 6 tests from 2 test cases.

[----------] Global test environment set-up.

[----------] 3 tests from FactorialTest

[ RUN      ] FactorialTest.Negative

[       OK ] FactorialTest.Negative (0 ms)

[ RUN      ] FactorialTest.Zero

[       OK ] FactorialTest.Zero (0 ms)

[ RUN      ] FactorialTest.Positive

[       OK ] FactorialTest.Positive (0 ms)

[----------] 3 tests from FactorialTest (0 ms total)

 

[----------] 3 tests from IsPrimeTest

[ RUN      ] IsPrimeTest.Negative

[       OK ] IsPrimeTest.Negative (0 ms)

[ RUN      ] IsPrimeTest.Trivial

[       OK ] IsPrimeTest.Trivial (0 ms)

[ RUN      ] IsPrimeTest.Positive

[       OK ] IsPrimeTest.Positive (0 ms)

[----------] 3 tests from IsPrimeTest (0 ms total)

 

[----------] Global test environment tear-down

[==========] 6 tests from 2 test cases ran. (0 ms total)

[  PASSED  ] 6 tests.

2. how to build all samples by using cmake?

 

Cmake generates native build scripts. 先建立mybuild目录

# cd /usr/src/gtest-1.5.0

# mddir mybuild

# cd mybuild

(1) only generate gtest_unittest

# cmake /usr/src/gtest-1.5.0  //generate Makefile

# make                        //generate executable file gtest_unittest

(2) generate gtest_unittest and all samples

//generate Makefile with Google Test's samples to be compiled

# cmake -Dbuild_gtest_samples=ON /usr/src/gtest-1.5.0

//generate executable files gtest_unittest, sample1_unittest, sample2_unittest, ...

# make

Reference

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

../readme

 

 

Appendix. 使用CMake编译gtest_unittest和samples

 

//生成Makefile文件

root@yu29:/usr/src/gtest-1.5.0/mybuild# cmake -Dbuild_gtest_samples=ON /usr/src/gtest-1.5.0

-- The CXX compiler identification is GNU

-- The C compiler identification is GNU

-- Check for working CXX compiler: /usr/bin/c++

-- Check for working CXX compiler: /usr/bin/c++ -- works

-- Detecting CXX compiler ABI info

-- Detecting CXX compiler ABI info - done

-- Check for working C compiler: /usr/bin/gcc

-- Check for working C compiler: /usr/bin/gcc -- works

-- Detecting C compiler ABI info

-- Detecting C compiler ABI info - done

-- Looking for include files CMAKE_HAVE_PTHREAD_H

-- Looking for include files CMAKE_HAVE_PTHREAD_H - found

-- Looking for pthread_create in pthreads

-- Looking for pthread_create in pthreads - not found

-- Looking for pthread_create in pthread

-- Looking for pthread_create in pthread - found

-- Found Threads: TRUE

-- Found PythonInterp: /usr/bin/python2.6

-- Configuring done

-- Generating done

-- Build files have been written to: /usr/src/gtest-1.5.0/mybuild

root@yu29:/usr/src/gtest-1.5.0/mybuild# ls

CMakeCache.txt  CMakeFiles  cmake_install.cmake  CTestTestfile.cmake  Makefile

//编译

root@yu29:/usr/src/gtest-1.5.0/mybuild# make

Scanning dependencies of target gtest

[  5%] Building CXX object CMakeFiles/gtest.dir/src/gtest-all.cc.o

Linking CXX static library libgtest.a

[  5%] Built target gtest

Scanning dependencies of target gtest_main

[ 11%] Building CXX object CMakeFiles/gtest_main.dir/src/gtest_main.cc.o

...

//生成了所有samples的可执行程序

root@yu29:/usr/src/gtest-1.5.0/mybuild# ls

CMakeCache.txt       libgtest.a         sample2_unittest  sample7_unittest

CMakeFiles           libgtest_main.a    sample3_unittest  sample8_unittest

cmake_install.cmake  Makefile           sample4_unittest  sample9_unittest

CTestTestfile.cmake  sample10_unittest  sample5_unittest

gtest_unittest       sample1_unittest   sample6_unittest

//看看sample2的执行结果

root@yu29:/usr/src/gtest-1.5.0/mybuild# ./sample2_unittest

Running main() from gtest_main.cc

[==========] Running 4 tests from 1 test case.

[----------] Global test environment set-up.

[----------] 4 tests from MyString

[ RUN      ] MyString.DefaultConstructor

[       OK ] MyString.DefaultConstructor (0 ms)

[ RUN      ] MyString.ConstructorFromCString

[       OK ] MyString.ConstructorFromCString (0 ms)

[ RUN      ] MyString.CopyConstructor

[       OK ] MyString.CopyConstructor (0 ms)

[ RUN      ] MyString.Set

[       OK ] MyString.Set (0 ms)

[----------] 4 tests from MyString (0 ms total)

 

[----------] Global test environment tear-down

[==========] 4 tests from 1 test case ran. (1 ms total)

[  PASSED  ] 4 tests.

//gtest_unittest的执行结果较长，此处不再显示。