Added ability to configure MvcEvent listeners.

[andrei-stsiapanau]

Added ability to configure initial list of MvcEvent listeners with config file:

array(
    'listeners' => array('RouteListener', 'DispatchListener', 'ViewManager', 'SendReponseListener'),
)

[blanchonvincent]

@Stephanoff I think you should have an array "$defaultListeners" with 'RouteListener', 'DispatchListener', 'ViewManager', 'SendResponseListener' and do a merge with the "$listeners" in bootstrap() before attach. In this case, you can override only one listener, you should not re-write all the listeners.

[blanchonvincent]

@Stephanoff can you add unit tests with override listeners ?

[andrei-stsiapanau]

@blanchonvincent I thought about list of default listeners, but I guess that setting hardcoded list of listeners will prevent developers to build application with custom set of listeners.

[andrei-stsiapanau]

@blanchonvincent but from other side, developers can use custom implementation of Zend\Mvc\Application with overriden Application::bootstrap() method for more flexible configuration. Ok, I will add default set of listeners.

[blanchonvincent]

@Stephanoff i would say :

$defaultListeners = array('RouteListener', 'DispatchListener', 'ViewManager', 'SendReponseListener');
$listeners = array_merge($defaultListeners, $listeners);

"array_merge" keep second value for two keys, with that each developer can override all or only one listener.

[blanchonvincent]

@Stephanoff you must add unit tests with the PR

[blanchonvincent]

@Stephanoff you PR is really cool, i like and need that :)
If you are not familiar with unit tests, i will help you.

[andrei-stsiapanau]

Thank you for assistance. I'm familiar with phpunit, but restricted with time. Give me one hour.

[andrei-stsiapanau]

@blanchonvincent Added test for custom listener. I'm not sure that this is best case, may be you can suggest more better approcah.

[blanchonvincent]

@Stephanoff you should array_merge to merge listeners : https://github.com/blanchonvincent/zf2/blob/develop-application/library/Zend/Mvc/Application.php#L133
you can complete tests with default listeners checking : https://github.com/blanchonvincent/zf2/blob/develop-application/tests/ZendTest/Mvc/ApplicationTest.php#L663

[andrei-stsiapanau]

But using array_merge we cannot be ensure uniquess of listeners.
Regarding unit tests - I will replace my test with your.

[blanchonvincent]

@Stephanoff oops => array_unique(array_merge($defaultListeners, $listeners))

[andrei-stsiapanau]

@blanchonvincent Updated Application and TestCase classes.

[weierophinney]

I'd actually make this a class property. That would make overriding them simpler, as the developer wouldn't need to override the bootstrap() method, only the property. (I can do this during merge.)

[andrei-stsiapanau]

Sounds good.