added tests to makefile

Makefile

@@ -38,6 +38,10 @@ test:
 	./$(EXE) -tok ./tests/test_simpleLiterals.alpha
 	./$(EXE) -tok ./tests/test_real_alpha_file.alpha
 	./$(EXE) -tok ./tests/test_real_alpha_2.alpha
+	./$(EXE) -tok -st ./tests/test_real_alpha_2.alpha
+	./$(EXE) -st -tok ./tests/test_operators.alpha
+	./$(EXE) -st ./tests/test_keywords.alpha
+
 clean:
 	rm -f *.o
 	rm -f lex.yy.c