Lithium Docs

						public function testConditions() {
		$result = $this->db->conditions(null, null);
		$this->assertEqual(array(), $result);

		$function = 'function() { return this.x < y;}';
		$conditions = new MongoCode($function);
		$result = $this->db->conditions($conditions, null);

		$this->assertTrue(is_array($result));
		$this->assertTrue(isset($result['$where']));
		$this->assertEqual($conditions, $result['$where']);

		$conditions = $function;
		$result = $this->db->conditions($conditions, null);
		$this->assertTrue(is_array($result));
		$this->assertTrue(isset($result['$where']));
		$this->assertEqual($conditions, $result['$where']);

		$conditions = array('key' => 'value', 'anotherkey' => 'some other value');
		$result = $this->db->conditions($conditions, null);
		$this->assertTrue(is_array($result));
		$this->assertEqual($conditions, $result);

		$conditions = array('key' => array('one', 'two', 'three'));
		$result = $this->db->conditions($conditions, null);
		$this->assertTrue(is_array($result));
		$this->assertTrue(isset($result['key']));
		$this->assertTrue(isset($result['key']['$in']));
		$this->assertEqual($conditions['key'], $result['key']['$in']);
	}