/**
* Add command as last in the list of callbacks
*
* @param Mage_Backend_Model_Menu_Builder_CommandAbstract $command
* @return Mage_Backend_Model_Menu_Builder_CommandAbstract
* @throws InvalidArgumentException if invalid chaining command is supplied
*/
public function chain(Mage_Backend_Model_Menu_Builder_CommandAbstract $command)
{
if (is_null($this->_next)) {
$this->_next = $command;
} else {
$this->_next->chain($command);
}
return $this;
}
public function testExecuteCallsNextCommandInChain()
{
$itemParams = array();
$this->_model->expects($this->once())->method('_execute')->with($this->equalTo($itemParams))->will($this->returnValue($itemParams));
$command1 = $this->getMock('Mage_Backend_Model_Menu_Builder_Command_Update', array(), array(array('id' => 1)));
$command1->expects($this->once())->method('execute')->with($this->equalTo($itemParams))->will($this->returnValue($itemParams));
$this->_model->chain($command1);
$this->assertEquals($itemParams, $this->_model->execute($itemParams));
}
/**
* Add command as last in the list of callbacks
*
* @param Mage_Backend_Model_Menu_Builder_CommandAbstract $command
* @return Mage_Backend_Model_Menu_Builder_CommandAbstract
* @throws InvalidArgumentException
*/
public function chain(Mage_Backend_Model_Menu_Builder_CommandAbstract $command)
{
if ($command instanceof Mage_Backend_Model_Menu_Builder_Command_Add) {
throw new InvalidArgumentException("Two 'add' commands cannot have equal id (" . $command->getId() . ")");
}
return parent::chain($command);
}
