Assert.assertSame("Idle connections not as expected", 1, TestElf.getPool(ds).getIdleConnections());
Connection connection = ds.getConnection();
Assert.assertNotNull(connection);
StubConnection unwrapped = connection.unwrap(StubConnection.class);
Assert.assertTrue("unwrapped connection is not instance of StubConnection: " + unwrapped, (unwrapped != null && unwrapped instanceof StubConnection));
}
finally {
ds.close();
}