XCUITest - fail to find UICollectionView Cell and cell items

问题

i have collection list of items cell , i wants to make UI test (XCUItest). But unable to find the element collection view cell and its elements inside it .

UIViewController

 ---> UICollectionView
   ----> UICollectionViewCell
     -----> The element that I would like to get.

---

func testProductListingPageLoad() {
      let collection = app.collectionViews["ProductList"]
      let element = collection.cells["ProductListItemCell0"].firstMatch
      XCTAssert(collection.exists) // it is successful
      XCTAssert(element.exists) // Fails at this line   
}

来源：https://stackoverflow.com/questions/60361289/xcuitest-fail-to-find-uicollectionview-cell-and-cell-items