gecko-dev/layout/forms/test/test_bug595310.html

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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=595310
-->
<head>
<title>Test for Bug 595310</title>
<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="application/javascript" src="/tests/SimpleTest/WindowSnapshot.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=595310">Mozilla Bug 595310</a>
<p id="display"></p>
<div id="content">
<input id='i' value="bar">
<textarea id='t'>bar</textarea>
</div>
<pre id="test">
<script type="application/javascript">
/** Test for Bug 595310 **/
SimpleTest.waitForExplicitFinish();
addLoadEvent(function() {
// We want to compare to value="bar" and no placeholder shown.
// That is what is currently showed.
var s1 = snapshotWindow(window, false);
var content = document.getElementById('content');
var i = document.getElementById('i');
var t = SpecialPowers.wrap(document.getElementById('t'));
i.value = ""; i.placeholder = "foo";
t.value = ""; t.placeholder = "foo";
// Flushing.
// Note: one call would have been enough actually but I didn't want to favour
// one element... ;)
i.getBoundingClientRect();
t.getBoundingClientRect();
function synthesizeDropText(aElement, aText)
{
var editor = SpecialPowers.wrap(aElement)
.QueryInterface(SpecialPowers.Ci.nsIDOMNSEditableElement)
.editor
.QueryInterface(SpecialPowers.Ci.nsIPlaintextEditor);
editor.insertText(aText);
}
// We insert "bar" and we should only see "bar" now.
synthesizeDropText(i, "bar");
synthesizeDropText(t, "bar");
var s2 = snapshotWindow(window, false);
ok(compareSnapshots(s1, s2, true)[0],
"When setting the value, the placeholder should disappear.");
SimpleTest.finish();
});
</script>
</pre>
</body>
</html>