+include(ExternalProject)
+
+set(GTEST_ROOT "/usr/src/gtest" CACHE FILEPATH "Path to GTest CMake project")
+
+message(STATUS "Found GTest at ${GTEST_ROOT}")
+
+if (EXISTS ${GTEST_ROOT})
+
+ExternalProject_Add(gtest PREFIX ./gtest
+ SOURCE_DIR ${GTEST_ROOT}
+ INSTALL_COMMAND true)
+
+link_directories(${CMAKE_CURRENT_BINARY_DIR}/gtest/src/gtest-build)
+FILE(GLOB files gtest_runner.cc *-helpers.cc *_test.cc)
+add_executable(libapt_test ${files})
+target_link_libraries(libapt_test -lgtest ${CMAKE_THREAD_LIBS_INIT} apt-private apt-inst)
+add_dependencies(libapt_test gtest)
+add_test(NAME AptTests
+ COMMAND libapt_test
+ WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
+
+endif()