gecko-dev/dom/html/test/test_document.watch.html

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3.9 KiB
HTML

<!DOCTYPE html>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=903332
-->
<head>
<meta charset="utf-8">
<title>Test for Bug 903332</title>
<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
<script type="application/javascript">
/** Test for Bug 903332 **/
var watch1Called;
function watch1(prop, oldValue, newValue)
{
is(watch1Called, false, "watch1Called not reset properly?");
watch1Called = true;
is(prop, "cookie", "wrong property name passed to watch1");
return newValue;
}
var watch2Called;
function watch2(prop, oldValue, newValue)
{
is(watch2Called, false, "watch2Called not reset properly?");
watch2Called = true;
is(prop, "cookie", "wrong property name passed to watch2");
return newValue;
}
// Just in case subsequent tests depend on a particular value...
var originalValue = document.cookie;
ok(true, "originalValue: " + originalValue);
var originalPrefix = originalValue.length > 0 ? originalValue + "; " : "";
try
{
// trial set (no watch) to verify things work
document.cookie = "first=set";
is(document.cookie, originalPrefix + "first=set",
"first value correct");
// add a watch
document.watch("cookie", watch1);
// set, check for watch invoked
watch1Called = false;
document.cookie = "second=set";
is(watch1Called, true, "watch1 function should be called");
is(document.cookie, originalPrefix + "first=set; second=set",
"second value correct");
// and a second time, just in case
watch1Called = false;
document.cookie = "third=set";
is(watch1Called, true, "watch1 function should be called");
is(document.cookie, originalPrefix + "first=set; second=set; third=set",
"third value correct");
// overwrite the current watch with a new one
document.watch("cookie", watch2);
// set, check for watch invoked
watch1Called = false;
watch2Called = false;
document.cookie = "fourth=set";
is(watch1Called, false, "watch1 invoked erroneously");
is(watch2Called, true, "watch2 function should be called");
is(document.cookie, originalPrefix + "first=set; second=set; third=set; fourth=set",
"fourth value correct");
// and a second time, just in case
watch1Called = false;
watch2Called = false;
document.cookie = "fifth=set";
is(watch1Called, false, "watch1 invoked erroneously");
is(watch2Called, true, "watch2 function should be called");
is(document.cookie, originalPrefix + "first=set; second=set; third=set; fourth=set; fifth=set",
"fifth value correct");
// remove the watch
document.unwatch("cookie");
// check for non-invocation now
watch1Called = false;
watch2Called = false;
document.cookie = "sixth=set";
is(watch1Called, false, "watch1 shouldn't be called");
is(watch2Called, false, "watch2 shouldn't be called");
is(document.cookie, originalPrefix + "first=set; second=set; third=set; fourth=set; fifth=set; sixth=set",
"sixth value correct");
}
finally
{
// reset
document.unwatch("cookie"); // harmless, should be no-op except if bugs
var d = new Date();
d.setTime(0);
var suffix = "=; expires=" + d.toGMTString();
document.cookie = "first" + suffix;
document.cookie = "second" + suffix;
document.cookie = "third" + suffix;
document.cookie = "fourth" + suffix;
document.cookie = "fifth" + suffix;
document.cookie = "sixth" + suffix;
}
is(document.cookie, originalValue,
"document.cookie isn't what it was initially! expect bustage further " +
"down the line");
</script>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=903332">Mozilla Bug 903332</a>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<pre id="test">
</pre>
</body>
</html>