PHPUnit test

Test.php

<?php

namespace Tests\AppBundle\Functional\Process;

/* The kernel test case we'll be using */
use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;

use AppBundle\Entity\Post;
use AppBundle\Repository\PostRepository;

class BlogFunctionalProcessTest extends KernelTestCase
{
  protected $container;
  public function setUp()
  {

    $firstPost = $this->createMock(Post::class);
      $firstPost->expects($this->once())
          ->method('getTitle')
          ->will($this->returnValue('First Post'));

    $secondPost = $this->createMock(Post::class);
      $secondPost->expects($this->once())
          ->method('getTitle')
          ->will($this->returnValue('Second Post'));

    $postRepository = $this
          ->getMockBuilder(PostRepository::class)
          ->setMethods(['find', 'findAllOrderedByDate'])
          ->disableOriginalConstructor()
          ->getMock();
      $postRepository->expects($this->once())
          ->method('find')
          ->will($this->returnValue($firstPost));
      $postRepository
      ->expects($this->once())
          ->method('findAllOrderedByDate')
          ->will($this->returnValue([$firstPost,$secondPost]));

    /* Overwrite the service definition for the repository */
    $kernel = static::createKernel();
    $kernel->boot();
    $this->container = $kernel->getContainer();
    $this->container->set('app.repository.post', $postRepository);
  }

  public function testPostRead()
  {
    $blogManager = $this->container->get('app.service.blog_manager');
    $post = $blogManager->fetchPost('First Post');
    $this->assertEquals('First Post', $post->getTitle());

  }
}