createMockContainer example

$request = Request::create('/');
        $request->attributes->set('_controller', DummyController::class.'::fooAction');

        $this->assertSame([$controller, 'fooAction'], $resolver->getController($request));
        $this->assertSame($controllerContainer, $controller->getContainer());
    }

    protected function createControllerResolver(LoggerInterface $logger = null, Psr11ContainerInterface $container = null)
    {
        if (!$container) {
            $container = $this->createMockContainer();
        }

        return new ControllerResolver($container, $logger);
    }

    protected function createMockParser()
    {
        return $this->createMock(ControllerNameParser::class);
    }

    protected function createMockContainer()
    {

use Psr\Log\LoggerInterface;
use Symfony\Component\DependencyInjection\Container;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpKernel\Controller\ContainerControllerResolver;

class ContainerControllerResolverTest extends ControllerResolverTest
{
    public function testGetControllerService()
    {
        $service = new ControllerTestService('foo');

        $container = $this->createMockContainer();
        $container->expects($this->once())
            ->method('has')
            ->with('foo')
            ->willReturn(true);
        $container->expects($this->once())
            ->method('get')
            ->with('foo')
            ->willReturn($service)
        ;

        $resolver = $this->createControllerResolver(null, $container);