Device.php

<?php
App::uses('AppModel', 'Model');
/**
 * Device Model
 *
 * @property Raw $Raw
 */
class Device extends AppModel {

/**
 * Use database config
 *
 * @var string
 */
	public $useDbConfig = 'data';

/**
 * Use table
 *
 * @var mixed False or table name
 */
	public $useTable = 'device';

/**
 * Display field
 *
 * @var string
 */
	public $displayField = 'id';

	public $actsAs = array(
		'AuditLog.Auditable',
		'SoftDelete',
	);
}

DeviceFixture.php

<?php
/**
 * DeviceFixture
 *
 */
class DeviceFixture extends CakeTestFixture {

/**
 * Table name
 *
 * @var string
 */
	public $table = 'device';

/**
 * Import
 *
 * @var array
 */
	public $import = array('model' => 'Device', 'connection' => 'data');

/**
 * Records
 *
 * @var array
 */
	public $records = array(
		array(
			'id' => '1',
			'type' => '1',
			'mac' => '90-A2-DA-0F-B5-86',
			'ip' => '192.168.1.177',
			'created' => '2014-12-16 20:58:37',
			'modified' => '2015-01-05 13:42:58',
			'last_message' => '2015-01-16 12:04:54',
			'status' => '0'
		),
		array(
			'id' => '2',
			'type' => '2',
			'mac' => '90-A2-DA-0F-B5-88',
			'ip' => '192.168.1.179',
			'created' => '2014-12-16 21:15:38',
			'modified' => '2014-12-16 21:15:38',
			'last_message' => '2015-01-19 15:17:07',
			'status' => '1'
		),
		array(
			'id' => '3',
			'type' => '1',
			'mac' => '',
			'ip' => '',
			'created' => '2015-01-09 12:24:19',
			'modified' => '2015-01-09 12:24:30',
			'last_message' => '2015-01-19 19:48:31',
			'status' => '1'
		),
		array(
			'id' => '4',
			'type' => '4',
			'mac' => '',
			'ip' => '',
			'created' => '2015-01-16 12:11:20',
			'modified' => '2015-01-16 12:11:20',
			'last_message' => '2015-01-16 15:02:09',
			'status' => '1'
		),
		array(
			'id' => '5',
			'type' => '1',
			'mac' => '',
			'ip' => '',
			'created' => '2015-01-19 15:17:28',
			'modified' => '2015-01-19 15:18:51',
			'last_message' => '2015-01-19 16:03:06',
			'status' => '1'
		),
		array(
			'id' => '6',
			'type' => '0',
			'mac' => '',
			'ip' => '',
			'created' => '2015-01-20 02:03:48',
			'modified' => '2015-01-20 02:03:48',
			'last_message' => null,
			'status' => '0'
		),
	);

}

DeviceTest.php

<?php

class DeviceTest extends ControllerTestCase {

	public $fixtures = array(
		'app.device',
	);
	   public function testBootingPostData() {
       ...
    }
}