GetPageSource On UIScrollView Is Slow

[ajschwieterman]

The problem

There is a page in the iOS app I am testing where it displays a list of items that it receives from a backend server. I am using driver.getPageSource() to know when the page is done loading on the phone's screen and if a scroll down action is performed, the bottom of the scroll view has been reached. When I call driver.getPageSource(), Appium takes a really long time to load the page source, sometimes up to 30 seconds. Any other suggestions/method to accomplish these tasks?

Environment

• Appium version (or git revision) that exhibits the issue: v1.16.0
• Desktop OS/version used to run Appium: Mac OS Catalina v10.15.3
• Node.js version (unless using Appium.app|exe): v13.7.0
• Npm or Yarn package manager: v6.13.7
• Mobile platform/version under test: iOS v13.3.1
• Real device or emulator/simulator: Real device
• Appium CLI or Appium.app|exe: Appium CLI

Code To Reproduce Issue [ Good To Have ]

public static void waitForPageToLoad() {
      //Variables
      String originalPageSource = "";
      String newPageSource = getPageSource();

      while (!originalPageSource.equals(newPageSource)) {
          originalPageSource = newPageSource;
          newPageSource = driver.getPageSource();
      }
}

private static MobileElement scrollToElement(MobileElement element) {
        //Variables
        boolean isElementVisible = false;
        String newPageSource = "";
        String originalPageSource;
        boolean reachedBottomOfPage = false;

        newPageSource = getPageSource();
        while (!isElementVisible && !reachedBottomOfPage) {
            //Check if the element is visible
              ...
              /* code to check if the element is visible */
              ...
            //If the element isn't visible, scroll down the page
            if (!isElementVisible) {
                originalPageSource = newPageSource;
                scrollDown();
                newPageSource = driver.getPageSource();
                reachedBottomOfPage = (originalPageSource.equals(newPageSource));
                if (isResultsRecordingEnabled) {
                    enableRecordingResults();
                }
            }
        }
        return element;
    }

[mykola-mokhnach]

Yes, you could try to get the source with some attributes excluded (I would try to exclude the visible one first): #13595 (comment)

Also, setting the source type to description is pretty fast, since it uses a native XCTest call

[ajschwieterman]

Thank you for your help! The issue that you linked was very helpful. I was able to cut my test time significantly! 👏 👍 😃