laravel4cookbook

Controller Testing 355
38 }
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This file should be saved as app/Formativ/PostServiceProvider.php.
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You will also need to load the Formativ namespace through the composer.json file. You can
do that by using either PSR specification, or even through a classmap. More info on that at:
https://getcomposer.org/doc/01-basic-usage.md#autoloading.
https://getcomposer.org/doc/01-basic-usage.md#autoloading
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You can find out more about making service providers at: http://laravel.com/docs/packages.
http://laravel.com/docs/packages
This does a couple of important things:
1. Interfaces are connected to concrete implementations, so that we can type-hint the interfaces
in our controller, and they will be resolved automatically, with the Laravel IoC container.
2. We specify which interfaces are provided (in the provides() method) so that we can defer the
loading of this service provider until the concrete implementations are called.
We need to define the interfaces and concrete implementations:
1