What is this?

This is an example setup of cmake with google test on CircleCI with Docker. Hopefully it'll help someone get set up with C++ and google test on CI service.

Where are things?

build/ is where code is built - like where executables are.
lib/ includes gtest-1.7.0.

Rest of code in root:

• CMakeLists.txt must be in each subdirectory of the project
• main.cpp is just a driver file - the common place to run the normal application
• project1.cpp and project1.h have code for the class 'Project1'
• test_project1.cpp has code to test Project1

CI files:

• Dockerfile has buid info to CentOS6 image. That image is used by CircleCI
• circle.yml is CircleCI config file. Contants is about building container and running test.

What do I do?

Use cmake and make

If you want to test it all out through the common gtest procedure, first delete build/ (if present). Then...

In the project root:

mkdir build
cd build
cmake ..

By now Makefiles should be created. Then, to build executables and do all that linking stuff,

make

To prepare all your tests, run this:

cmake -Dtest=ON ..

To run all tests easily,

make test

Use Docker image

if you want run test on Docker image ( CentOS )

sudo docker pull yutakakinjyo/gtest-cmake-example:master
sudo docker run --rm=true yutakakinjyo/gtest-cmake-example:master /bin/sh -c 'cd build; make test'

Use build script

$ cmake -P build.cmake

Run executables

Then you can do ./myexecutable for the generated executable, e.g.:

./project1

and if you did cmake with test=ON:

./runUnitTests

Details

Command things

cmake -Dtest=ON turns on the variable 'test', which is specified in the root CMakeLists.txt file. This is handy if you want to build in certain ways. Clear description here.