add build and test instructions to readme

CMakeLists.txt

@@ -13,7 +13,7 @@ include(FetchContent)
 FetchContent_Declare(
     googletest
     GIT_REPOSITORY https://github.com/google/googletest.git
-    GIT_TAG        v1.17.x  # Use a specific version tag or commit hash
+    GIT_TAG        v1.17.x
 )
 FetchContent_MakeAvailable(googletest)
 
@@ -39,9 +39,17 @@ target_include_directories(maiden_test PRIVATE
     "${CMAKE_CURRENT_SOURCE_DIR}/src"
 )
 
+target_compile_options(maiden_test PRIVATE --coverage)
+target_link_options(maiden_test PRIVATE --coverage)
+
+# TODO: add option for disabling tests (like if target == DEBUG then tests on, otherwise tests off)
 target_link_libraries(maiden_test PRIVATE
+    GTest::gmock
     GTest::gmock_main
 )
 
+include(CTest)
+enable_testing() # ctest is whatever
+
 include(GoogleTest)
 gtest_discover_tests(maiden_test)