Add some tests

test/CMakeLists.txt

@@ -1,10 +1,6 @@
-# Copyright (c) 2025 Dominic Masters
-#
+# Copyright (c) 2026 Dominic Masters
+# 
 # This software is released under the MIT License.
 # https://opensource.org/licenses/MIT
 
-# Tests
-add_executable(test_main test_main.c)
-target_include_directories(test_main PUBLIC ${CMAKE_CURRENT_LIST_DIR})
-target_link_libraries(test_main PUBLIC ${DUSK_LIBRARY_TARGET_NAME})
-add_test( NAME tests1 COMMAND test_main)
+add_subdirectory(util)