How to start working with GTest and CMake

Solution 1:

The solution involved putting the gtest source directory as a subdirectory of your project. I've included the working CMakeLists.txt below if it is helpful to anyone.

cmake_minimum_required(VERSION 2.6)
project(basic_test)

################################
# GTest
################################
ADD_SUBDIRECTORY (gtest-1.6.0)
enable_testing()
include_directories(${gtest_SOURCE_DIR}/include ${gtest_SOURCE_DIR})

################################
# Unit Tests
################################
# Add test cpp file
add_executable( runUnitTests testgtest.cpp )
# Link test executable against gtest & gtest_main
target_link_libraries(runUnitTests gtest gtest_main)
add_test( runUnitTests runUnitTests )

Solution 2:

Here is a complete working example that I just tested. It downloads directly from the web, either a fixed tarball, or the latest subversion directory.

cmake_minimum_required (VERSION 3.1)

project (registerer)

##################################
# Download and install GoogleTest

include(ExternalProject)
ExternalProject_Add(gtest
  URL https://github.com/google/googletest/archive/release-1.8.0.zip
  # Comment above line, and uncomment line below to use subversion.
  # SVN_REPOSITORY http://googletest.googlecode.com/svn/trunk/ 
  # Uncomment line below to freeze a revision (here the one for 1.7.0)
  # SVN_REVISION -r700
  
  PREFIX ${CMAKE_CURRENT_BINARY_DIR}/gtest
  INSTALL_COMMAND ""
)
ExternalProject_Get_Property(gtest source_dir binary_dir)

################
# Define a test
add_executable(registerer_test registerer_test.cc)

######################################
# Configure the test to use GoogleTest
#
# If used often, could be made a macro.

add_dependencies(registerer_test gtest)
include_directories(${source_dir}/include)
target_link_libraries(registerer_test ${binary_dir}/libgtest.a)
target_link_libraries(registerer_test ${binary_dir}/libgtest_main.a)

##################################
# Just make the test runnable with
#   $ make test
    
enable_testing()
add_test(NAME    registerer_test 
         COMMAND registerer_test)