ExecutionTester 

/** 
 * DBCP-343 - verify additional operations reset lastUsed on
 * the parent connection
 */
@Test public void testLastUsedUpdate() throws Exception {
  DelegatingConnection conn=(DelegatingConnection)ds.getConnection();
  PreparedStatement ps=conn.prepareStatement("");
  CallableStatement cs=conn.prepareCall("");
  Statement st=conn.prepareStatement("");
  checkLastUsedStatement(ps,conn);
  checkLastUsedPreparedStatement(ps,conn);
  checkLastUsedStatement(cs,conn);
  checkLastUsedPreparedStatement(cs,conn);
  checkLastUsedStatement(st,conn);
}