project skeleton

.gitignore

+build/
+bin/
+lib/

CMakeLists.txt

+cmake_minimum_required(VERSION 3.12)
+project(hashtable)
+
+# set build type
+if(NOT CMAKE_BUILD_TYPE)
+  set(CMAKE_BUILD_TYPE Release)
+endif()
+
+# set language standard
+set(CMAKE_CXX_STANDARD 14)
+
+# set some compile flags
+set(CMAKE_CXX_FLAGS "-Wall -Wextra")
+set(CMAKE_CXX_FLAGS_DEBUG "-g -O0")
+set(CMAKE_CXX_FLAGS_RELEASE "-O3")
+
+# put build binaries and libraries into top-level folders
+set(EXECUTABLE_OUTPUT_PATH ${PROJECT_SOURCE_DIR}/bin)
+set(LIBRARY_OUTPUT_PATH ${PROJECT_SOURCE_DIR}/lib)
+
+include_directories(src)
+add_subdirectory(src)
+
+# testing
+enable_testing()
+add_subdirectory(tests)

src/CMakeLists.txt

+add_library(hashtable STATIC hashtable.cpp)
+
+add_executable(main main.cpp)
+target_link_libraries(main hashtable)

src/main.cpp

+#include <iostream>
+
+int main() {
+	std::cout << "Hello CMake." << std::endl;
+}

tests/CMakeLists.txt

+# include google test source
+add_subdirectory(/usr/src/gtest ${PROJECT_BINARY_DIR}/gtest)
+
+# cmake testing package
+include(CTest)
+
+# the executables that run the tests
+add_executable(test_main test_main.cpp)
+add_executable(test_hashtable test_hashtable.cpp)
+
+# link needed libraries
+target_link_libraries(test_main gtest gtest_main)
+target_link_libraries(test_hashtable hashtable gtest gtest_main)
+
+# run with ctest
+add_test(NAME test_main COMMAND ${EXECUTABLE_OUTPUT_PATH}/test_main)
+add_test(NAME test_hashtable COMMAND ${EXECUTABLE_OUTPUT_PATH}/test_hashtable)

tests/test_hashtable.cpp

+#include <gtest/gtest.h>
+#include "hashtable.h"

tests/test_main.cpp

+#include <gtest/gtest.h>