Test expecting Exception

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unit-testing

How can i make a test expecting an exception to be thrown.
here is my code :

[ExpectedException(typeof(Exception))]
       public void AnAddressHasOnly1UserTest()
       {
           Address address = new Address()
           {
               Street ="street1",
               City="city1",
               Number=1,
                State="state1"
           };
           User user = new User()
           {
               UserName="User1",
               Password="1234",
               Address = address,

           };
           context.Users.Add(user);
           User user2 = new User()
           {
               UserName = "User2",
               Password = "1234",
               Address = address
           };
           context.Users.Add(user2);
           context.SaveChanges();

       }

But when i run the test instead of passing the test i get the exception thrown.