Endlich fertig

makefile

@@ -29,14 +29,38 @@ program_obj_files = stack.o bintree.o numbers.o timer.o highscore.o
 doble : main.o $(program_obj_files)
 	$(CC) $(FLAGS) $^ -o doble
 
-$(program_obj_filesobj_files): %.o: %.c
-	$(CC) -c $(FLAGS) $^ -o $@
+# pattern rule to build .o from .c
+%.o: %.c
+	$(CC) -c $(FLAGS) $< -o $@
 
 # --------------------------
 # Unit Tests
 # --------------------------
-unitTests:
-	echo "needs to be implemented"
+unitTests: test_stack test_numbers test_bintree
+	@total=0; passed=0; failed=0; \
+	for t in test_stack test_numbers test_bintree; do \
+		total=$$((total+1)); \
+		printf "Running %s...\n" "$$t"; \
+		./$$t; rc=$$?; \
+		if [ $$rc -eq 0 ]; then \
+			printf "%s: PASS\n\n" "$$t"; \
+			passed=$$((passed+1)); \
+		else \
+			printf "%s: FAIL (exit %d)\n\n" "$$t" $$rc; \
+			failed=$$((failed+1)); \
+		fi; \
+	done; \
+	printf "Summary: %d tests run, %d passed, %d failed\n" $$total $$passed $$failed; \
+	exit $$failed
+
+test_stack: test_stack.c stack.c
+	$(CC) $(FLAGS) test_stack.c stack.c -o test_stack
+
+test_numbers: test_numbers.c numbers.c bintree.c stack.c
+	$(CC) $(FLAGS) test_numbers.c numbers.c bintree.c stack.c -o test_numbers
+
+test_bintree: test_bintree.c bintree.c stack.c
+	$(CC) $(FLAGS) test_bintree.c bintree.c stack.c -o test_bintree
 
 # --------------------------
 # Clean