Laravel 5.1 - Run testcase with real model in memory.

database.php

<?php

// config/database.php

return [

    'connections' => [
        // create new connection on sqlite
        // we con do anything with it because it's on ram.
        // NOTICE: When you write migration script. You must tell which fields is null or not null with nullable()
        // On mysql default is null but sqlite is not null.
        // It's better if you define it at first.
        'testing' => [
            'driver'   => 'sqlite',
            'database' => ':memory:',
            'prefix'   => ''
        ],

    ],

];

phpunit.xml

<?xml version="1.0" encoding="UTF-8"?>
<phpunit backupGlobals="false"
         backupStaticAttributes="false"
         bootstrap="bootstrap/autoload.php"
         colors="true"
         convertErrorsToExceptions="true"
         convertNoticesToExceptions="true"
         convertWarningsToExceptions="true"
         processIsolation="false"
         stopOnFailure="false"
         syntaxCheck="false">
    <testsuites>
        <testsuite name="Application Test Suite">
            <directory>./tests/</directory>
        </testsuite>
    </testsuites>
    <filter>
        <whitelist>
            <directory suffix=".php">app/</directory>
        </whitelist>
    </filter>
    <php>
        <env name="APP_ENV" value="testing"/>
        <env name="CACHE_DRIVER" value="array"/>
        <env name="SESSION_DRIVER" value="array"/>
        <env name="QUEUE_DRIVER" value="sync"/>
        <env name="DB_CONNECTION" value="testing"/>
    </php>
</phpunit>

ProductControllerTest.php

<?php

use Illuminate\Foundation\Testing\DatabaseMigrations;

class ProductControllerTest extends TestCase
{
    use DatabaseMigrations;

    protected $testSubject = null;

    protected function assertPreConditions()
    {
        $this->seed('ProductTableSeeder');
        $this->seed('UserTableSeeder');

        $admin = App\Models\User::where('name', 'admin')->first();
        $this->be($admin);
    }

    public function testGetIndex()
    {
        $this->route('GET', 'backoffice.products.index.get');

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

    public function testCreateGroup()
    {
        $this->route('GET', 'backoffice.products.create-group.get');

        $this->assertViewHas('product');

        $admin = App\Models\User::where('name', 'admin')->first();

        $response = $this->route('POST', 'backoffice.products.create-group.post', [
            'title' => 'Test Group 1',
            'position' => '0',
            'status' => 'enable'
            '_token' => csrf_token(),
        ]);
        
        $lastItem = App\Models\Product::orderBy('id', 'desc')->first();
        $this->assertRedirectedToRoute('backoffice.products.edit-group.get', ['id' => $lastItem->getKey()]);
    }
}