/**
* Executes a command and optionally returns a value
*
* @param object $command
* @param callable $next
*
* @return mixed
*
* @throws CanNotInvokeHandlerException
*/
public function execute($command, callable $next)
{
$commandName = $this->commandNameExtractor->extract($command);
$handler = $this->handlerLocator->getHandlerForCommand($commandName);
$methodName = $this->methodNameInflector->inflect($command, $handler);
// is_callable is used here instead of method_exists, as method_exists
// will fail when given a handler that relies on __call.
if (!is_callable([$handler, $methodName])) {
throw CanNotInvokeHandlerException::forCommand($command, "Method '{$methodName}' does not exist on handler");
}
return $handler->{$methodName}($command);
}
public function testClosuresCanBeInvoked()
{
$command = new CompleteTaskCommand();
$closureWasExecuted = false;
$handler = function () use(&$closureWasExecuted) {
$closureWasExecuted = true;
};
$this->methodNameInflector->shouldReceive('inflect')->andReturn('__invoke');
$this->handlerLocator->shouldReceive('getHandlerForCommand')->andReturn($handler);
$this->commandNameExtractor->shouldReceive('extract')->with($command);
$this->middleware->execute($command, $this->mockNext());
$this->assertTrue($closureWasExecuted);
}
/**
* @param string $command Command class name to be dispatched
* @param object $handler Class to handle the command
*/
private function addHandler($command, $handler)
{
$this->handlerLocator->addHandler($handler, $command);
}
