How to setup CLION with Google test

Project setup

1. create a clion project (default and everything, the one that gives you a main.cpp helloWorld)
2. create folders inside project named /Google_tests/lib and /sources
3. create librairies inside /sources, like /Person_lib in this example with the following structures

• CMakeLists.txt
• headers/cpp files, basically everything else

Librairy cmake

The librairies CMakeLists.txt files contains:

### modify _lib parameter
add_library(Person_lib ${CMAKE_CURRENT_LIST_FILE})

which scans all files inside and put it in a library named Person_lib.

Note: it is bad practice not to list manually all the files.

Sources cmake

The CMakeLists.txt file inside /sources contains:

# =============================================================
### MODIFY
set(LIBRARIES
        Person_lib)
# =============================================================

add_subdirectory(${LIBRARIES})

which you need to modify to add all librairies you create.

Root cmake

This files build one executable: app_run given a main.cpp file outside of /sources

cmake_minimum_required(VERSION 3.15)
project(googleTest)

set(CMAKE_CXX_STANDARD 14)

# setup librairies and main.cpp executable
add_subdirectory(sources) # add all librairies
include_directories(sources) # headers?

add_executable(app_run main.cpp) # create executable

# =============================================================
### MODIFY
# executable uses those librairies
target_link_libraries(app_run
        Person_lib)
# =============================================================

# google tests
add_subdirectory(tests)

Download google tests

1. big green button to download zip from Google test official git repository
2. extract contents into Google_tests/lib, should look like:

Test configuration

• Mirror your /sources structure file structure and add tests. Don't forget to include google tests and needed files:

#include <gtest/gtest.h>
#include <Person_lib/Person.h>

Create CMakeLists.txt inside /tests, then:

• reference your test files so that the All_Tests variable knows about your tests.
• reference your source files such that All_Tests variable knows about your tests.

# 'lib' is the folder width Google Test sources
add_subdirectory(lib)
include_directories(${gtest_SOURCE_DIR}/include ${gtest_SOURCE_DIR})

# declare relatives path to test files because
# relatives to projet
# =============================================================
### MODIFY
set(Person_lib_Tests_files
        "Person_lib/PersonTests.cpp")
set(All_Tests
        "${Person_lib_Tests_files}")

set(Sources
        "Person_lib/Person.cpp"
        "Person_lib/Person.h")
# =============================================================
list(TRANSFORM Sources PREPEND "../../sources/")

# test files to include
add_executable(all_tests_run
        ${All_Tests}
        ${Sources})

target_link_libraries(all_tests_run
        gtest
        gtest_main)

This will create all_tests_run.

Now you have two executables. However all_tests_run is not the executable that has cute green checkmarks so we click in the upper right corner of the clion IDE, on "Add Configuration...":

(Optionnaly remove run_all_tests) Click on the upper left + symbol > Google Test, change Target dropdown menu to all_tests_run > apply & ok

Now either your app_run or all_tests_run configuration and you should get:

which concludes our tutorial.