made example test

src/test/java/UserDAOTest.java

@@ -168,7 +168,14 @@ public class UserDAOTest extends JerseyTest {
         assertEquals("username2",user2.getUsername());
         assertNotEquals(user.getUsername(),user2.getUsername());
     }
-
+    @Test
+    public  void testPassword(){
+        byte[] salt = userDAO.generateSalt();
+        String pass1 = "passord123";
+        String hash1 = userDAO.hashPassword(pass1,salt);
+        String hash2 = userDAO.hashPassword(pass1,salt);
+        assertEquals(hash1,hash2);
+    }
     @Test
     public void testUpdateUser () {
         assertTrue(userDAO.editUser(1,"newuser",null));