if (NOT CMAKE_BUILD_TYPE)
  set(CMAKE_BUILD_TYPE Debug)
endif()
message(STATUS "CMAKE_BUILD_TYPE: ${CMAKE_BUILD_TYPE}")

message(STATUS "CMAKE_CXX_COMPILER_ID: ${CMAKE_CXX_COMPILER_ID}")
if("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
  add_compile_options(-stdlib=libc++)
else()
  add_compile_options(-Wlogical-op)
  add_compile_options(-Wnoexcept)
  add_compile_options(-Wstrict-null-sentinel)
  add_compile_options(-Wuseless-cast)
endif()
add_compile_options(-Wall -Wextra -Wpedantic)
add_compile_options(-Wcast-align -Wcast-qual)
add_compile_options(-Wctor-dtor-privacy)
add_compile_options(-Wconversion -Wno-sign-conversion)
add_compile_options(-Wdisabled-optimization)
add_compile_options(-Wdouble-promotion)
add_compile_options(-Wformat=2)
add_compile_options(-Winit-self)
add_compile_options(-Wmissing-include-dirs)
add_compile_options(-Wold-style-cast)
add_compile_options(-Woverloaded-virtual)
add_compile_options(-Wredundant-decls)
add_compile_options(-Wshadow)
add_compile_options(-Wstrict-aliasing=1)
add_compile_options(-Wstrict-overflow=5)
add_compile_options(-Wswitch-default)
add_compile_options(-Wundef)

aux_source_directory(${CMAKE_CURRENT_SOURCE_DIR} source_files)
foreach(src IN LISTS source_files)
  get_filename_component(name_we ${src} NAME_WE)
  add_executable(test-${name_we} ${src})
  target_link_libraries(test-${name_we} ${PROJECT_NAME}::${PROJECT_NAME})
  set_target_properties(test-${name_we} PROPERTIES
    CXX_STANDARD_REQUIRED ON
    CXX_EXTENSIONS OFF
  )
  add_test(NAME ${name_we} COMMAND $<TARGET_FILE:test-${name_we}>)
endforeach()