Lithium Docs

						public function testOffsetUnset() {
		$this->_recordSet[0];
		unset($this->_recordSet[1]);

		$expected = array(
			2 => array('id' => 2, 'data' => 'data2'),
			3 => array('id' => 3, 'data' => 'data3'),
			4 => array('id' => 4, 'data' => 'data4')
		);
		$this->assertEqual($expected, $this->_recordSet->to('array'));

		$this->_objectRecordSet[0];
		unset($this->_objectRecordSet[1]);

		$this->expectException();
		$this->_objectRecordSet[1];

		$result = $this->_objectRecordSet[2];
		$this->assertEqual(2, $result->id);
		$this->assertEqual('data2', $result->data);

		$result = $this->_objectRecordSet[3];
		$this->assertEqual(3, $result->id);
		$this->assertEqual('data3', $result->data);

		$result = $this->_objectRecordSet[4];
		$this->assertEqual(4, $result->id);
		$this->assertEqual('data4', $result->data);
	}