Mocking methods by parameters

gistfile1.php

    public function setRouterMock()
    {
        $routerMock = $this->getMockBuilder("Symfony\Bundle\FrameworkBundle\Routing\Router")->disableOriginalConstructor()
            ->disableOriginalConstructor()->setMethods(array("all", "getRouteCollection", "generate"))->getMock();

        $routerMock->expects($this->any())->method("all")->will($this->returnValue(array()));

        $routerMock->expects($this->any())->method("getRouteCollection")->will($this->returnValue($this->routeCollection));
        $routerMock->expects($this->any())->method("generate")->withAnyParameters()->will($this->returnCallback(array($this, "generateUrlCallback")));
        $this->routerMock = $routerMock;
    }

    public function generateUrlCallback($routeName)
    {
        return $this->routeCollection->get($routeName)->getPath();
    }