XCUIElement not found using app.images when starting XCUITest

Question

XCUIElement not found using app.images when starting XCUITest

I have an XCUITest that cannot find a specific image, but it is perfectly visible on the screen (emulators and physical devices)

How can I get around or make UIImage available for tests? All I want to check is whether the item is visible and palpable on the screen.

UIImage is added as a subtitle to the UITableView - it is placed at the bottom of the TableView.

- (void)viewDidLoad {
         [super viewDidLoad];
         // portions of code left out here
         _aView = [[UIImageView alloc] initWithFrame:CGRectZero];
         [[self aView] setContentMode:UIViewContentModeScaleAspectFit];
         [[self aView] setImage:[UIImage imageNamed:IMG_NAME]] ;
         [[self tableView] addSubview:[self aView]];

UIImageView later laid out:

  - (void) viewWillLayoutSubviews {
       // portions of code left out here
       [[self aView] setFrame:CGRectMake(0, MAX([self tableView].contentSize.height - 41 ,[self tableView].bounds.size.height - 41) , 180, 30)];
       [[self aView] setCenter:CGPointMake([self tableView].center.x, [self aView].center.y)];

Then, when running the test:

    let app = XCUIApplication()

    //this works
    let tapString = localizedString("skip")
    let skipButton = app.buttons[tapString].firstMatch
    if (skipButton.exists) {
        skipButton.tap()
    }

    let theImage = app.images["img.png"]
    let doesExist = theImage.exists //<< it never exists

Debugging is also performed and printing of all images does not display the image. I set a breakpoint on the line using doExists and in the debug window I run the command: