GuardListener example

new GuardExpression(new Transition('name', 'from', 'to'), 'is_valid(subject)'),
            ],
        ];
        $expressionLanguage = new ExpressionLanguage();
        $token = new UsernamePasswordToken(new InMemoryUser('username', 'credentials', ['ROLE_USER']), 'provider', ['ROLE_USER']);
        $tokenStorage = $this->createMock(TokenStorageInterface::class);
        $tokenStorage->expects($this->any())->method('getToken')->willReturn($token);
        $this->authenticationChecker = $this->createMock(AuthorizationCheckerInterface::class);
        $trustResolver = $this->createMock(AuthenticationTrustResolverInterface::class);
        $this->validator = $this->createMock(ValidatorInterface::class);
        $roleHierarchy = new RoleHierarchy([]);
        $this->listener = new GuardListener($this->configuration, $expressionLanguage, $tokenStorage, $this->authenticationChecker, $trustResolver, $roleHierarchy, $this->validator);
    }

    public function testWithNotSupportedEvent()
    {
        $event = $this->createEvent();
        $this->configureAuthenticationChecker(false);
        $this->configureValidator(false);

        $this->listener->onTransition($event, 'not supported');

        $this->assertFalse($event->isBlocked());
    }