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Diffstat (limited to 'dom/base/test/test_window_extensible.html')
| -rw-r--r-- | dom/base/test/test_window_extensible.html | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/dom/base/test/test_window_extensible.html b/dom/base/test/test_window_extensible.html new file mode 100644 index 000000000..5f9f09291 --- /dev/null +++ b/dom/base/test/test_window_extensible.html @@ -0,0 +1,46 @@ +<!DOCTYPE html> +<html> +<!-- +https://bugzilla.mozilla.org/show_bug.cgi?id=856384 +--> +<head> + <meta charset="UTF-8"> + <title>Test for Bug 856384</title> + <script type="application/javascript" 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=856384">Mozilla Bug 856384</a> +<p id="display"></p> +<div id="content" style="display: none"> +</div> +<iframe name="constructor" src="about:blank"></iframe> +<pre id="test"> +<script type="application/javascript"> +SimpleTest.waitForExplicitFinish(); + +function run() +{ + is(Object.isExtensible(window), true, "Windows are extensible by default"); + + try + { + Object.preventExtensions(window); + throw "didn't throw"; + } + catch (e) + { + is(e instanceof TypeError, true, + "preventExtensions(window) should throw a TypeError, instead got: " + e); + is(Object.isExtensible(window), true, + 'Windows are extensible after an extensibility "change" attempt'); + } + + SimpleTest.finish(); +} + +window.addEventListener("load", run, false); +</script> +</pre> +</body> +</html> |