Tests that attempted exploitation via malformed credential submission is not possible.

Source

						public function testLoginWithArray() {
		$subject = new Form(array(
			'model' => __CLASS__,
			'validators' => array('password' => false)
		));

		$request = (object) array('data' => array(
			'username' => array('!=' => ''), 'password' => ''
		));

		$result = $subject->check($request);
		$this->assertEqual('Array', $result['username']);
	}