Limitations for Testing with Mozilla Firefox on macOS

The following limitations are known when testing web applications with Mozilla Firefox on macOS:

• Silk Test Workbench has been tested on macOS with Mozilla Firefox 54 or later.
• Testing on multiple Mozilla Firefox windows at the same time is only supported if the additional windows are opened from the initial Mozilla Firefox window by the AUT itself. If the additional Mozilla Firefox windows are opened manually, Silk Test Workbench does not recognize the elements on these Mozilla Firefox windows. For example, Silk Test Workbench recognizes the elements in a Mozilla Firefox window that is opened by clicking on a link or a button in the AUT during recording, but Silk Test Workbench does not recognize the elements in a Mozilla Firefox window that was opened by pressing CTRL+N during recording.
• Silk Test Workbench does not support testing modal browser windows, which are windows that can be displayed with the window.showmodaldialog command. These modal browser windows have been officially deprecated, and are disabled with Google Chrome 37 or later, while they are planned to no longer be supported in future versions of Mozilla Firefox. You can workaround this issue by using low-level actions, for example native clicks with coordinates to click on an object or typekeys to fill out text fields.
• Silk Test Workbench does not support testing Silverlight with Mozilla Firefox.
• Silk Test Workbench does not support testing some browser dialogs, for example the About dialog, with Mozilla Firefox.
• Silk Test Workbench does not support testing about:* pages with Mozilla Firefox.
• Silk Test Workbench does not support recording a click on the Print button in Mozilla Firefox. To click on this button during replay, you can manually add a desktop click with coordinates to your test script. For example:

  'VB .NET code
  _desktop.Click(printButton.GetRect(true).Center)

• Silk Test does not provide native support for Mozilla Firefox. You cannot test internal Mozilla Firefox functionality. For example, in a test, you cannot change the currently displayed web page by adding text to the navigation bar through Win32. As a workaround, you can use API calls to navigate between web pages. Silk Test supports handling alerts and similar dialog boxes through the Alerts API.
• Silk Test Workbench does not support recording locators on JavaScript alert boxes with Mozilla Firefox. With Mozilla Firefox version 58 or prior, you can use the following methods to handle Javascript alert boxes:
  • AcceptAlert
  • DismissAlert
  • GetAlertText
  • IsAlertPresent
  Note: You cannot use these methods with Mozilla Firefox 59 or later.
• Silk Test Workbench does not support Java applets for Mozilla Firefox on macOS.
• Silk Test Workbench does not support properties in XPath expressions for Mozilla Firefox. Only attributes are supported in XPath expressions.
• Silk Test Workbench does not support the GetFocus method of the IMoveable class.
• Silk Test does not support testing child technology domains of the xBrowser domain with Mozilla Firefox. For example Apache Flex or Microsoft Silverlight are not supported with Mozilla Firefox.
• The following methods are not supported:
  • PressKeys
  • ReleaseKeys
• Native playback for the following is not supported:
  • Double-click.
  • Right and middle mouse button click.
• The DomClick method is not supported on controls that open an alert.
• With Mozilla Firefox 55, uploading a file does not work. For additional information, see File upload no longer works with geckodriver 0.18.0 and Firefox 55.