third_party/WebKit/LayoutTests/fast/events/selectstart-by-arrow-keys-prevent-default.html

   1 <!DOCTYPE html>
   2 <html>
   3 <body>
   4 <p>This test ensures selectstart event fires when selection is created by arrow key and script can prevent the selection change.</p>
   5 If running this test manually, click on the div ("Hello World") and try to select the text using arrow keys.<br>
   6 Expected result: SelectStart event will fire when user starts extending the selection, but due to script preventDefault it prevents the selection change.<br>
   7 <div contenteditable>Hello World</div>
   8 <script>
   9
  10
  11 var selectStartCount = 0;
  12 var div = document.getElementsByTagName('div')[0];
  13 div.addEventListener('selectstart', function (event) { event.preventDefault(); selectStartCount++; });
  14 div.focus();
  15 window.getSelection().collapse(div.firstChild, 1);
  16
  17 if (window.testRunner) {
  18     testRunner.dumpAsText();
  19     eventSender.keyDown("rightArrow", ["shiftKey"]);
  20     logResult("Check Right arrow + Shift", 1);
  21
  22     eventSender.keyDown("rightArrow", ["shiftKey"], ["ctrlKey"]);
  23     logResult("Check Right arrow + Shift + Control", 2);
  24
  25     eventSender.keyDown("end", ["shiftKey"]);
  26     logResult("Check End + Shift", 3);
  27 }
  28
  29 function logResult(title, expectedCount) {
  30     var range = window.getSelection().getRangeAt(0);
  31     document.write(title + ': ');
  32     if (selectStartCount != expectedCount)
  33         document.write('FAIL -  expected ' + expectedCount + ' events but got ' + selectStartCount + ' events');
  34     else if (range.startOffset != 1 || range.endOffset != 1)
  35         document.write('FAIL - selection changed');
  36     else
  37         document.write('PASS');
  38     document.write('<br>');
  39 }
  40
  41 </script>
  42 </body>
  43 </html>