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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=787070
-->
<head>
<meta charset="utf-8">
<title>Test for Bug 787070</title>
<script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=787070">Mozilla Bug 787070</a>
<p id="display"></p>
<div id="content" style="display: none">
<iframe id="t" src="http://example.org/tests/dom/bindings/test/file_dom_xrays.html"></iframe>
</div>
<pre id="test">
<script type="application/javascript">
/** Test for Bug 1021066 **/
var Cu = Components.utils;
// values should contain the values that the property should have on each of
// the objects on the prototype chain of obj. A value of undefined signals
// that the value should not be present on that prototype.
function checkXrayProperty(obj, name, values)
{
var instance = obj;
do {
var value = values.shift();
if (typeof value == "undefined") {
ok(!obj.hasOwnProperty(name), "hasOwnProperty shouldn't see \"" + name + "\" through Xrays");
is(Object.getOwnPropertyDescriptor(obj, name), undefined, "getOwnPropertyDescriptor shouldn't see \"" + name + "\" through Xrays");
ok(Object.keys(obj).indexOf(name) == -1, "Enumerating the Xray should not return \"" + name + "\"");
} else {
ok(obj.hasOwnProperty(name), "hasOwnProperty should see \"" + name + "\" through Xrays");
var pd = Object.getOwnPropertyDescriptor(obj, name);
ok(pd, "getOwnPropertyDescriptor should see \"" + name + "\" through Xrays");
if (pd && pd.get) {
is(pd.get.call(instance), value, "Should get the right value for \"" + name + "\" through Xrays");
} else {
is(obj[name], value, "Should get the right value for \"" + name + "\" through Xrays");
}
if (pd && pd.enumerable) {
ok(Object.keys(obj).indexOf("" + name) > -1, "Enumerating the Xray should return \"" + name + "\"");
}
}
} while ((obj = Object.getPrototypeOf(obj)));
}
function checkWindowXrayProperty(obj, name, windowValue, windowPrototypeValue, namedPropertiesValue, eventTargetValue)
{
checkXrayProperty(obj, name, [ windowValue, windowPrototypeValue, namedPropertiesValue, eventTargetValue ]);
}
function test()
{
// Window
var win = document.getElementById("t").contentWindow;
var doc = document.getElementById("t").contentDocument;
var winProto = Object.getPrototypeOf(win);
is(winProto, win.Window.prototype, "The proto chain of the Xray should mirror the prototype chain of the Xrayed object");
var namedPropertiesObject = Object.getPrototypeOf(winProto);
is(Cu.getClassName(namedPropertiesObject, /* unwrap = */ true), "WindowProperties", "The proto chain of the Xray should mirror the prototype chain of the Xrayed object");
var eventTargetProto = Object.getPrototypeOf(namedPropertiesObject);
is(eventTargetProto, win.EventTarget.prototype, "The proto chain of the Xray should mirror the prototype chain of the Xrayed object");
// Xrays need to filter expandos.
checkWindowXrayProperty(win, "expando", undefined);
ok(!("expando" in win), "Xrays should filter expandos");
checkWindowXrayProperty(win, "shadowedIframe", undefined, undefined, doc.getElementById("shadowedIframe").contentWindow);
ok("shadowedIframe" in win, "Named properties should be exposed through Xrays");
// Named properties live on the named properties object for global objects.
checkWindowXrayProperty(win, "iframe", undefined, undefined, doc.getElementById("iframe").contentWindow);
ok("iframe" in win, "Named properties should be exposed through Xrays");
// Window properties live on the instance, shadowing the properties of the named property object.
checkWindowXrayProperty(win, "document", doc, undefined, doc.getElementById("document").contentWindow);
ok("document" in win, "WebIDL properties should be exposed through Xrays");
// Unforgeable properties live on the instance, shadowing the properties of the named property object.
checkWindowXrayProperty(win, "self", win, undefined, doc.getElementById("self").contentWindow);
ok("self" in win, "WebIDL properties should be exposed through Xrays");
// Object.prototype is at the end of the prototype chain.
var obj = win;
while ((proto = Object.getPrototypeOf(obj))) {
obj = proto;
}
is(obj, win.Object.prototype, "Object.prototype should be at the end of the prototype chain");
// Named properties shouldn't shadow WebIDL- or ECMAScript-defined properties.
checkWindowXrayProperty(win, "addEventListener", undefined, undefined, undefined, eventTargetProto.addEventListener);
is(win.addEventListener, eventTargetProto.addEventListener, "Named properties shouldn't shadow WebIDL-defined properties");
is(win.toString, win.Object.prototype.toString, "Named properties shouldn't shadow ECMAScript-defined properties");
// HTMLDocument
// Unforgeable properties live on the instance.
checkXrayProperty(doc, "location", [ win.location ]);
is(String(win.location), document.getElementById("t").src,
"Should have the right stringification");
// HTMLHtmlElement
var elem = doc.documentElement;
var elemProto = Object.getPrototypeOf(elem);
is(elemProto, win.HTMLHtmlElement.prototype, "The proto chain of the Xray should mirror the prototype chain of the Xrayed object");
elemProto = Object.getPrototypeOf(elemProto);
is(elemProto, win.HTMLElement.prototype, "The proto chain of the Xray should mirror the prototype chain of the Xrayed object");
elemProto = Object.getPrototypeOf(elemProto);
is(elemProto, win.Element.prototype, "The proto chain of the Xray should mirror the prototype chain of the Xrayed object");
elemProto = Object.getPrototypeOf(elemProto);
is(elemProto, win.Node.prototype, "The proto chain of the Xray should mirror the prototype chain of the Xrayed object");
elemProto = Object.getPrototypeOf(elemProto);
is(elemProto, win.EventTarget.prototype, "The proto chain of the Xray should mirror the prototype chain of the Xrayed object");
// Xrays need to filter expandos.
ok(!("expando" in elem), "Xrays should filter expandos");
// WebIDL-defined properties live on the prototype.
checkXrayProperty(elem, "version", [ undefined, "" ]);
is(elem.version, "", "WebIDL properties should be exposed through Xrays");
// HTMLCollection
var coll = doc.getElementsByTagName("iframe");
// Named properties live on the instance for non-global objects.
checkXrayProperty(coll, "iframe", [ doc.getElementById("iframe") ]);
// Indexed properties live on the instance.
checkXrayProperty(coll, 0, [ doc.getElementById("shadowedIframe") ]);
// WebIDL-defined properties live on the prototype, overriding any named properties.
checkXrayProperty(coll, "item", [ undefined, win.HTMLCollection.prototype.item ]);
// ECMAScript-defined properties live on the prototype, overriding any named properties.
checkXrayProperty(coll, "toString", [ undefined, undefined, win.Object.prototype.toString ]);
// Frozen arrays should come from our compartment, not the target one.
var languages1 = win.navigator.languages;
isnot(languages1, undefined, "Must have .languages");
ok(Array.isArray(languages1), ".languages should be an array");
ok(Object.isFrozen(languages1), ".languages should be a frozen array");
ok(!Cu.isXrayWrapper(languages1), "Should have our own version of array");
is(Cu.getGlobalForObject(languages1), window,
"languages1 should come from our window");
// We want to get .languages in the content compartment, but without waiving
// Xrays altogether.
var languages2 = win.eval("navigator.languages");
isnot(languages2, undefined, "Must still have .languages");
ok(Array.isArray(languages2), ".languages should still be an array");
ok(Cu.isXrayWrapper(languages2), "Should have xray for content version of array");
is(Cu.getGlobalForObject(languages2), win,
"languages2 come from the underlying window");
ok(Object.isFrozen(languages2.wrappedJSObject),
".languages should still be a frozen array underneath");
isnot(languages1, languages2, "Must have distinct arrays");
isnot(languages1, languages2.wrappedJSObject,
"Must have distinct arrays no matter how we slice it");
// Check that DataTransfer's .types has the hack to alias contains()
// to includes().
var dataTransfer = new win.DataTransfer();
is(dataTransfer.types.contains, dataTransfer.types.includes,
"Should have contains() set up as an alias to includes()");
// Waive Xrays on the dataTransfer itself, since the .types we get is
// different over Xrays vs not.
is(dataTransfer.wrappedJSObject.types.contains, undefined,
"Underlying object should not have contains() set up as an alias to " +
"includes()");
// Check that deleters work correctly in the [OverrideBuiltins] case.
var elem = win.document.documentElement;
var dataset = elem.dataset;
is(dataset.foo, undefined, "Should not have a 'foo' property");
ok(!('foo' in dataset), "Really should not have a 'foo' property");
is(elem.getAttribute("data-foo"), null,
"Should not have a 'data-foo' attribute");
ok(!elem.hasAttribute("data-foo"),
"Really should not have a 'data-foo' attribute");
dataset.foo = "bar";
is(dataset.foo, "bar", "Should now have a 'foo' property");
ok('foo' in dataset, "Really should have a 'foo' property");
is(elem.getAttribute("data-foo"), "bar",
"Should have a 'data-foo' attribute");
ok(elem.hasAttribute("data-foo"),
"Really should have a 'data-foo' attribute");
delete dataset.foo;
is(dataset.foo, undefined, "Should not have a 'foo' property again");
ok(!('foo' in dataset), "Really should not have a 'foo' property again");
is(elem.getAttribute("data-foo"), null,
"Should not have a 'data-foo' attribute again");
ok(!elem.hasAttribute("data-foo"),
"Really should not have a 'data-foo' attribute again");
// Check that deleters work correctly in the non-[OverrideBuiltins] case.
var storage = win.sessionStorage;
is(storage.foo, undefined, "Should not have a 'foo' property");
ok(!('foo' in storage), "Really should not have a 'foo' property");
is(storage.getItem("foo"), null, "Should not have an item named 'foo'");
storage.foo = "bar";
is(storage.foo, "bar", "Should have a 'foo' property");
ok('foo' in storage, "Really should have a 'foo' property");
is(storage.getItem("foo"), "bar", "Should have an item named 'foo'");
delete storage.foo
is(storage.foo, undefined, "Should not have a 'foo' property again");
ok(!('foo' in storage), "Really should not have a 'foo' property again");
is(storage.getItem("foo"), null, "Should not have an item named 'foo' again");
SimpleTest.finish();
}
SimpleTest.waitForExplicitFinish();
addLoadEvent(test);
</script>
</pre>
</body>
</html>
|
