third_party/WebKit/LayoutTests/editing/selection/move-by-character-brute-force.html

   1 <meta charset="UTF-8">
   2 <script src="../../resources/js-test.js"></script>
   3 <div id="test"></div>
   4 <script>
   5 description("This test checks that we have simple caret motion up to a certain limit");
   6
   7 function hasSimpleCaretMovement(charCode) {
   8     var testString = "aaaaa" + String.fromCharCode(charCode) + "bbbb";
   9     element.textContent = testString;
  10     var selection = window.getSelection();
  11     selection.collapse(element, 0);
  12     for (var i = 0; i < testString.length; ++i) {
  13         selection.modify("move", "forward", "character");
  14         if (selection.baseOffset != i + 1)
  15             return false;
  16     }
  17     return true;
  18 }
  19
  20 function toHex(i) {
  21     var hex = i.toString(16);
  22     while (hex.length < 4)
  23         hex = "0" + hex;
  24     return hex;
  25 }
  26
  27 var element = document.getElementById("test");
  28
  29 debug("Positive control:");
  30 shouldBeTrue("hasSimpleCaretMovement(0x0041)");
  31 debug("");
  32
  33 debug("Negative control:");
  34 shouldBeFalse("hasSimpleCaretMovement(0x0300)");
  35 debug("");
  36
  37 debug("Brute force:");
  38 for (var i = 1; i < 1024; ++i) {
  39     if (i >= 0x0300 && i <= 0x036F)
  40         shouldBeFalse("hasSimpleCaretMovement(i) // i = U+" + toHex(i));
  41     else
  42         shouldBeTrue("hasSimpleCaretMovement(i) // i = U+" + toHex(i));
  43 }
  44
  45 element.textContent = "";
  46 </script>