Testing service providers

Here we verify that when we resolve an interface, we get an item of the correct class back:

<?php

namespace Tests\Unit\Providers;

use Mockery as m;
use Tests\TestCase;

class ServiceProviderTest extends TestCase
{
    /** @test */
    public function it_sets_up_the_comments_repository()
    {
        $repo = $this->app->make('Matthewbdaly\LaravelComments\Contracts\Repositories\Comment');
        $this->assertInstanceOf(\Matthewbdaly\LaravelComments\Eloquent\Repositories\Decorators\Comment::class, $repo);
    }

    /** @test */
    public function it_sets_up_the_flag_repository()
    {
        $repo = $this->app->make('Matthewbdaly\LaravelComments\Contracts\Repositories\Comment\Flag');
        $this->assertInstanceOf(\Matthewbdaly\LaravelComments\Eloquent\Repositories\Decorators\Comment\Flag::class, $repo);
    }
}

Here, we have a facade for a shopping cart. We mock out our application's cart service using Mockery, and set an assertion that it should receive a call to the destroy() method. Then, we call it from the facade. That way, we're able to confirm that calling the methods via the facade passes those method calls along to an instance of the underlying class:

<?php

namespace Tests\Unit\Providers;

use Tests\TestCase;
use Mockery as m;
use Cart;

class ServiceProviderTest extends TestCase
{
    public function testFacade()
    {
        $mock = m::mock('Matthewbdaly\LaravelCart\Contracts\Services\Cart');
        $mock->shouldReceive('destroy')->once();
        $this->app->instance('Matthewbdaly\LaravelCart\Contracts\Services\Cart', $mock);
        $this->assertInstanceOf('Matthewbdaly\LaravelCart\Contracts\Services\Cart', $this->app['Matthewbdaly\LaravelCart\Contracts\Services\Cart']);
        Cart::destroy();
    }
}