Fix broken tests when using BrowserStack

[pomek]

The main issue: #615

In order to reproduce issues listed below, please follow this instruction – #615 (comment) – How to run it on my local machine?

Broken tests in this package.

• Edge 16.16299.0 (Windows 10 0.0.0) EditingController conversion should convert selection from view to model FAILED
• Firefox 56.0.0 (Mac OS X 10.10.0) MutationObserver should fire mutations event with view selection instance, if dom selection can be mapped to view FAILED
• Firefox 56.0.0 (Mac OS X 10.10.0) MutationObserver should fire mutations event with viewSelection param set to null, if dom selection cannot be mapped to view FAILED
• Firefox 56.0.0 (Mac OS X 10.10.0) SelectionObserver should fire selectionChange when it is the only change FAILED
• Firefox 56.0.0 (Mac OS X 10.10.0) SelectionObserver should add only one listener to one document FAILED
• Firefox 56.0.0 (Mac OS X 10.10.0) SelectionObserver should not fire selectionChange on render FAILED
• Firefox 56.0.0 (Mac OS X 10.10.0) SelectionObserver should not fired if observer is disabled FAILED
• Firefox 56.0.0 (Mac OS X 10.10.0) SelectionObserver should not fired if there is no focus FAILED
• Firefox 56.0.0 (Mac OS X 10.10.0) SelectionObserver should fired if there is no focus but document is read-only FAILED
• Firefox 56.0.0 (Mac OS X 10.10.0) SelectionObserver "before each" hook FAILED
• Firefox 56.0.0 (Mac OS X 10.10.0) SelectionObserver "after each" hook for "should be true if range start and range end are in same parent" FAILED
• Firefox 56.0.0 (Mac OS X 10.10.0) "after each" hook for "should be false if range start and range end are in different parents" FAILED
• Chrome 62.0.3202 (Mac OS X 10.9.5) Renderer render similar selection should not render non-collapsed selection it is similar (element start) FAILED
• Chrome 62.0.3202 (Mac OS X 10.9.5) Renderer render similar selection should not render non-collapsed selection it is similar (element end) FAILED
• Chrome 62.0.3202 (Mac OS X 10.9.5) Renderer render similar selection should not render non-collapsed selection it is similar (element start - nested) FAILED
• Chrome 62.0.3202 (Mac OS X 10.9.5) Renderer render similar selection should not render non-collapsed selection it is similar (element end - nested) FAILED
• Safari 11.0.0 (Mac OS X 10.13.0) Document jump over ui element handler collapsed selection do nothing when another key is pressed FAILED
• Safari 11.0.0 (Mac OS X 10.13.0) Document jump over ui element handler collapsed selection jump over ui element when right arrow is pressed before ui element - directly before ui element FAILED
• Safari 11.0.0 (Mac OS X 10.13.0) Document jump over ui element handler collapsed selection jump over ui element when right arrow is pressed before ui element - not directly before ui element FAILED
• Safari 11.0.0 (Mac OS X 10.13.0) Document jump over ui element handler collapsed selection jump over multiple ui elements when right arrow is pressed before ui element FAILED
• Safari 11.0.0 (Mac OS X 10.13.0) Document jump over ui element handler collapsed selection jump over ui elements at the end of container element FAILED
• Safari 11.0.0 (Mac OS X 10.13.0) Document jump over ui element handler collapsed selection jump over ui element if selection is in attribute element - case 1 FAILED
• Safari 11.0.0 (Mac OS X 10.13.0) Document jump over ui element handler collapsed selection jump over ui element if selection is in attribute element - case 2 FAILED
• Safari 11.0.0 (Mac OS X 10.13.0) Document jump over ui element handler collapsed selection jump over ui element if selection is in multiple attribute elements FAILED
• Safari 11.0.0 (Mac OS X 10.13.0) Document jump over ui element handler collapsed selection jump over empty attribute elements and ui elements FAILED
• Safari 11.0.0 (Mac OS X 10.13.0) Document jump over ui element handler collapsed selection jump over empty attribute elements and ui elements if shift key is pressed FAILED
• Safari 11.0.0 (Mac OS X 10.13.0) Document jump over ui element handler non-collapsed selection jump over ui element if shift key is pressed FAILED
• Safari 11.0.0 (Mac OS X 10.13.0) Document jump over ui element handler non-collapsed selection jump over ui element if selection is in multiple attribute elements FAILED
• Safari 11.0.0 (Mac OS X 10.13.0) Document jump over ui element handler non-collapsed selection jump over empty attribute elements and ui elements if shift key is pressed FAILED
• Safari 11.0.0 (Mac OS X 10.13.0) DomConverter isDomSelectionCorrect() should return false if anchor or focus is directly inside dom element that represents view ui element FAILED
• Safari 11.0.0 (Mac OS X 10.13.0) DomConverter isDomSelectionCorrect() should return false if anchor or focus is inside deep ui element structure (not directly in ui element) FAILED
• Safari 11.0.0 (Mac OS X 10.13.0) SelectionObserver should re-render view if selections are similar if DOM selection is in incorrect place FAILED
• Safari 11.0.0 (Mac OS X 10.13.0) Renderer render should not change selection if there is no editable with selection FAILED
• Safari 11.0.0 (Mac OS X 10.13.0) Renderer render should not change selection if there is no focus FAILED
• ...and more. I was not able to track all failed tests.