public function testFindNoRootAssetMappings()
 {
     $this->discoveryManager->expects($this->once())->method('findRootBindings')->with($this->webPath('/foobar'))->willReturn(array());
     $expr = Expr::same('/foobar', AssetMapping::SERVER_PATH);
     $this->assertEquals(array(), $this->manager->findRootAssetMappings($expr));
 }