public function testHasRootAssetMappingsWithExpression()
 {
     $this->discoveryManager->expects($this->once())->method('hasRootBindings')->with($this->webPath('/path'))->willReturn(true);
     $expr = Expr::same('/path', AssetMapping::SERVER_PATH);
     $this->assertTrue($this->manager->hasRootAssetMappings($expr));
 }