editor/libeditor/tests/test_bug915962.html

   1 <!DOCTYPE HTML>
   2 <html>
   3 <!--
   4 https://bugzilla.mozilla.org/show_bug.cgi?id=915962
   5 -->
   6 <head>
   7   <title>Test for Bug 915962</title>
   8   <script src="/tests/SimpleTest/SimpleTest.js"></script>
   9   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
  10   <script src="/tests/SimpleTest/EventUtils.js"></script>
  11   <script type="text/javascript" src="/tests/gfx/layers/apz/test/mochitest/apz_test_utils.js"></script>
  12 </head>
  13 <body>
  14 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=915962">Mozilla Bug 915962</a>
  15 <p id="display"></p>
  16 <div id="content">
  17 </div>
  18 <pre id="test">
  19 <script type="application/javascript">
  20
  21 /** Test for Bug 915962 **/
  22
  23 var smoothScrollPref = "general.smoothScroll";
  24 SimpleTest.waitForExplicitFinish();
  25 var win = window.open("file_bug915962.html", "_blank",
  26                       "width=600,height=600,scrollbars=yes");
  27
  28
  29 function waitForScrollEvent(aWindow) {
  30   return new Promise(resolve => {
  31     aWindow.addEventListener("scroll", () => { SimpleTest.executeSoon(resolve); }, {once: true, capture: true});
  32   });
  33 }
  34
  35 function waitAndCheckNoScrollEvent(aWindow) {
  36   let gotScroll = false;
  37   function recordScroll() {
  38     gotScroll = true;
  39   }
  40   aWindow.addEventListener("scroll", recordScroll, {capture: true});
  41   return waitToClearOutAnyPotentialScrolls(aWindow).then(function() {
  42         aWindow.removeEventListener("scroll", recordScroll, {capture: true});
  43         is(gotScroll, false, "check that we didn't get a scroll");
  44       });
  45 }
  46
  47 SimpleTest.waitForFocus(function() {
  48   SpecialPowers.pushPrefEnv({"set": [[smoothScrollPref, false]]}, startTest);
  49 }, win);
  50 async function startTest() {
  51   // Make sure that pressing Space when a tabindex=-1 element is focused
  52   // will scroll the page.
  53   var button = win.document.querySelector("button");
  54   var sc = win.document.querySelector("div");
  55   sc.focus();
  56   await waitToClearOutAnyPotentialScrolls(win);
  57   is(win.scrollY, 0, "Sanity check");
  58   let waitForScrolling = waitForScrollEvent(win);
  59   synthesizeKey(" ", {}, win);
  60
  61   await waitForScrolling;
  62
  63   isnot(win.scrollY, 0, "Page is scrolled down");
  64   var oldY = win.scrollY;
  65   waitForScrolling = waitForScrollEvent(win);
  66   synthesizeKey(" ", {shiftKey: true}, win);
  67
  68   await waitForScrolling;
  69
  70   ok(win.scrollY < oldY, "Page is scrolled up");
  71
  72   // Make sure that pressing Space when a tabindex=-1 element is focused
  73   // will not scroll the page, and will activate the element.
  74   button.focus();
  75   await waitToClearOutAnyPotentialScrolls(win);
  76   var clicked = false;
  77   button.onclick = () => clicked = true;
  78   oldY = win.scrollY;
  79   let waitForNoScroll = waitAndCheckNoScrollEvent(win);
  80   synthesizeKey(" ", {}, win);
  81
  82   await waitForNoScroll;
  83
  84   ok(win.scrollY <= oldY, "Page is not scrolled down");
  85   ok(clicked, "The button should be clicked");
  86   synthesizeKey("VK_TAB", {}, win);
  87
  88   await waitToClearOutAnyPotentialScrolls(win);
  89
  90   oldY = win.scrollY;
  91   waitForScrolling = waitForScrollEvent(win);
  92   synthesizeKey(" ", {}, win);
  93
  94   await waitForScrolling;
  95
  96   ok(win.scrollY >= oldY, "Page is scrolled down");
  97
  98   win.close();
  99
 100   win = window.open("file_bug915962.html", "_blank",
 101                     "width=600,height=600,scrollbars=yes");
 102
 103   SimpleTest.waitForFocus(async function() {
 104     is(win.scrollY, 0, "Sanity check");
 105     waitForScrolling = waitForScrollEvent(win);
 106     synthesizeKey(" ", {}, win);
 107
 108     await waitForScrolling;
 109
 110     isnot(win.scrollY, 0, "Page is scrolled down without crashing");
 111
 112     win.close();
 113
 114     SimpleTest.finish();
 115   }, win);
 116 }
 117 </script>
 118 </pre>
 119 </body>
 120 </html>