laravel interface class not found

I have created an interface and so far tested the functions in the model and the interface.

I've now tried to apply it in my controller and initially came up with an error of: Class golfmanager\service\creator\TicketCreatorInterface does not exist

I have carried out a number of composer updates and composer dump-autoload but no change so far.

I added an entry to composer.json to autoload the class as follows:

"autoload": {
    "classmap": [
        "app/commands",
        "app/controllers",
        "app/models",
        "app/database/migrations",
        "app/database/seeds",
        "app/tests/TestCase.php",
        "app/helpers",
        "app/golfmanager"
    ],
    "psr-0": {
        "golfmanager": "app/"
    }
},

[updated with corrections]

My controller class which is creating the error looks like this:

use golfmanager\service\creator\TicketCreatorInterface;

 //controller manages the ticket books

class BooksController extends BaseController {

/**
 * Book Repository
 *
 * @var Book
 */
protected $book;
protected $ticket;

public function __construct(Book $book, TicketCreatorInterface $ticket)
{
    $this->book = $book;
    $this->ticket = $ticket;
}
}

My interface is:

namespace golfmanager\service\creator;
//ticket creator interface

interface TicketCreatorInterface {

public function createTicket($input, $book);

 }

Pulling my hair out over this -

Doing a unit test throws up the error, when I try to view the page in the browser I simply get a blank page which never loads

I have a service provider set up as follows:

namespace golfmanager\service;

use Illuminate\Support\ServiceProvider;

class GolfmanagerServiceProvider extends ServiceProvider {

public function register()
{
    $this->app->bind(
        'app\golfmanager\service\creator\TicketCreatorInterface', 
        'app\golfmanager\service\creator\TicketCreator'
        ); 
}

}

I've missed something obvious just can't see it - where have I gone wrong?

[I've updated the methods above to the latest attempts] Update: In config/app.php I have the following under service providers:

//custom service providers
    'golfmanager\service\GolfmanagerServiceProvider'

and my test:

use Mockery as m;
use Way\Tests\Factory;

class BooksTest extends TestCase {

public function __construct()
{
    $this->mock = m::mock('Eloquent', 'Book');
    $this->collection = m::mock('Illuminate\Database\Eloquent\Collection')->shouldDeferMissing();
}

public function setUp()
{
    parent::setUp();

    $this->attributes = Factory::book(['id' => 1]);
    $this->app->instance('Book', $this->mock);
}

public function tearDown()
{
    m::close();
}

public function testIndex()
{
    $this->mock->shouldReceive('all')->once()->andReturn($this->collection);
    $this->call('GET', 'books');

    $this->assertViewHas('books');
}

Current Error:

At the moment the error when I run the test is:

Cannot redeclare class TicketCreatorInterface in C:\wamp\www\golfmanager\golfmanager\app\golfmanager\service\creator\TicketCreatorInterface.php on line 5

When I run through the browser I get:

Class golfmanager\service\creator\TicketCreatorInterface does not exist

very confused - I don't know enought to resolve

Thanks