Updated CMakeLists.txt for tests

.gitignore

-# Ignore build directories
 /build/
 /cmake-build-*/
 
-# Ignore CMake generated files
 CMakeFiles/
 CMakeCache.txt
 cmake_install.cmake
 Makefile
 
-# Ignore Ninja generated files
 build.ninja
 rules.ninja
 .ninja_deps
 .ninja_log
 
-# Ignore Visual Studio Code workspace files
 .vscode/
 
-# Ignore JetBrains CLion project files
 .idea/
 
-# Ignore Google Test download directory
 /googletest-download/
 
-# Ignore compiled object files
 *.o
 *.obj
 *.lo
@@ -39,12 +32,10 @@ rules.ninja
 *.exp
 *.pdb
 
-# Ignore executable files
 *.exe
 *.out
 *.app
 
-# Ignore other temporary files
 *.log
 *.tmp
 *.swp

tests/CMakeLists.txt

 file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/googletest-download)
 
-configure_file(${CMAKE_CURRENT_SOURCE_DIR}/../libs/CMakeLists.txt.in ${CMAKE_BINARY_DIR}/googletest-download/CMakeLists.txt)
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/../external/CMakeLists.txt.in ${CMAKE_BINARY_DIR}/googletest-download/CMakeLists.txt)
 execute_process(COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}" .
         RESULT_VARIABLE result
         WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/googletest-download)
@@ -18,7 +18,9 @@ add_subdirectory(${CMAKE_BINARY_DIR}/googletest-src
         ${CMAKE_BINARY_DIR}/googletest-build
         EXCLUDE_FROM_ALL)
 
-add_executable(runTests main_test.cpp)
 include_directories(${CMAKE_SOURCE_DIR}/src)
+
+file(GLOB_RECURSE TEST_SOURCES LIST_DIRECTORIES false *.cpp)
+add_executable(runTests ${TEST_SOURCES})
 target_link_libraries(runTests gtest_main functions)
 add_test(NAME runTests COMMAND runTests)
\ No newline at end of file