DummyProvider example

$container->compile();
    }

    public function testFirewallWithInvalidUserProvider()
    {
        $this->expectException(InvalidConfigurationException::class);
        $this->expectExceptionMessage('Unable to create definition for "security.user.provider.concrete.my_foo" user provider');
        $container = $this->getRawContainer();

        $extension = $container->getExtension('security');
        $extension->addUserProviderFactory(new DummyProvider());

        $container->loadFromExtension('security', [
            'providers' => [
                'my_foo' => ['foo' => []],
            ],

            'firewalls' => [
                'some_firewall' => [
                    'pattern' => '/.*',
                    'http_basic' => [],
                ],
            ],