Quelle test_bug1358025.html Sprache: HTML

products/Sources/formale Sprachen/C/Firefox/editor/libeditor/tests/test_bug1358025.html

<html>
<head>
  <title>Test for bug 1358025</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css"
          href="/tests/SimpleTest/test.css" />
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1358025">Mozilla Bug 1358025</a>
<div id="display">
  <input type="text" id="edit">
</div>
<div id="content" style="display: none">

</div>
<pre id="test">
<script class="testbody" type="application/javascript">
SimpleTest.waitForExplicitFinish();
SimpleTest.waitForFocus(() => {
  let input = document.getElementById("edit");
  input.focus();

  let controller =
    SpecialPowers.wrap(input).controllers.getControllerForCommand("cmd_undo");

  // Create undo transaction
  SpecialPowers.wrap(input).setUserInput("XXX");
  SpecialPowers.wrap(input).setUserInput("");

  // Enable undo because this is user input
  SpecialPowers.wrap(input).setUserInput("");
  is(input.value, "", "value is empty");
  ok(controller.isCommandEnabled("cmd_undo"),
     "Undo is enabled by same empty string");

  SpecialPowers.wrap(input).setUserInput("ABC");
  is(input.value, "ABC", "value is ABC");
  ok(controller.isCommandEnabled("cmd_undo"), "Undo is enabled by a string");

  SpecialPowers.wrap(input).setUserInput("ABC");
  is(input.value, "ABC", "value is ABC");
  ok(controller.isCommandEnabled("cmd_undo"), "Undo is enabled by same string");

  SpecialPowers.wrap(input).setUserInput("DEF");
  is(input.value, "DEF", "value is DEF");
  ok(controller.isCommandEnabled("cmd_undo"),
     "Undo is enabled by different string");

  SpecialPowers.wrap(input).setUserInput("");
  is(input.value, "", "value is empty");
  ok(controller.isCommandEnabled("cmd_undo"),
     "Undo is enabled by empty string");

  // disable undo because this is by script

  // But Edge and Chrome still turn on undo when setting empty value from
  // empty value.  So we are same behaviour for this case.
  input.value = "";
  is(input.value, "", "value is empty");
  ok(controller.isCommandEnabled("cmd_undo"),
     "Undo is still enabled by same empty string");

  input.value = "ABC";
  is(input.value, "ABC", "value is ABC");
  ok(!controller.isCommandEnabled("cmd_undo"), "Undo is disabled by a string");

  // When setting same value by script, all browsers (Edge, Safari and Chrome)
  // keep undo state.
  input.value = "";
  SpecialPowers.wrap(input).setUserInput("ABC");
  ok(controller.isCommandEnabled("cmd_undo"), "Undo is enabled");
  input.value = "ABC";
  is(input.value, "ABC", "value is ABC");
  ok(controller.isCommandEnabled("cmd_undo"),
     "Undo is still enabled by same string");

  input.value = "";
  SpecialPowers.wrap(input).setUserInput("ABC");
  ok(controller.isCommandEnabled("cmd_undo"), "Undo is enabled");
  input.value = "DEF";
  is(input.value, "DEF", "value is DEF");
  ok(!controller.isCommandEnabled("cmd_undo"),
     "Undo is disabled by different string");

  input.value = "";
  SpecialPowers.wrap(input).setUserInput("DEF");
  ok(controller.isCommandEnabled("cmd_undo"), "Undo is enabled");
  input.value = "";
  is(input.value, "", "value is empty");
  ok(!controller.isCommandEnabled("cmd_undo"),
     "Undo is disabled by empty string");

  SimpleTest.finish();
}, window);
</script>
</pre>
</body>
</html>

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