Test that Resources are Closed

package net.unicon;

import java.sql.*;

class ThingTest3 extends GroovyTestCase { 

  void testTestMe() {
    int score = 42;
    int erId = -42;
    int rowcount = 0;

    boolean rsClosed = false;  //NEW
    def rs = [ getInt : { pos -> assertEquals(1, pos); score; },
               next : { -> rowcount++ == 0 },  //lexical scope is important
	       close : { -> assertFalse(rsClosed); rsClosed = true; }   //NEW
             ] as ResultSet;

    boolean stmtClosed = false; //NEW
    def stmt = [ executeQuery : { -> rs; }, //no arguments to this closure
                 setInt : { pos, id -> 
                            assertEquals(1, pos); 
	                    assertEquals(erId, id);
	                  }, 
	         close : { -> assertFalse(stmtClosed); stmtClosed = true; } //NEW
              ] as PreparedStatement;


    def conn = [ prepareStatement :  { q->  
                                       assertEquals(Thing3.query, q); //Whoa!!
	                               return stmt;  //can't resist "return"
				      }
               ] as Connection;

    def thing = new Thing3();
    assertEquals(score, thing.testMe(conn, erId));
    assertTrue(rsClosed);   //NEW
    assertTrue(stmtClosed); //NEW
  }
}