public function testWarmup() {
$dir = 'test_dir';
list($low) = $this
->createRouterMocks();
$low
->expects($this
->never())
->method('warmUp');
$high = $this
->getMock('Symfony\\Cmf\\Component\\Routing\\Tests\\Routing\\WarmableRouterMock');
$high
->expects($this
->once())
->method('warmUp')
->with($dir);
$this->router
->add($low, 10);
$this->router
->add($high, 100);
$this->router
->warmUp($dir);
}