Add tests for NoteService

src/test/java/testutil/AnyValues.java

@@ -0,0 +1,14 @@
+package testutil;
+
+import database.DaoException;
+
+public class AnyValues {
+
+    public static String string() {
+        return "string";
+    }
+
+    public static DaoException daoException() {
+        return new DaoException(string(), new RuntimeException());
+    }
+}