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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=589621
-->
<head>
  <title>Test for Bug 589621</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=589621">Mozilla Bug 589621</a>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<pre id="test">
<script>
/** Test for Bug 589621 **/
var sel = getSelection();
var range = document.createRange();
sel.addRange(range);
function t(n) {
  try {
    sel.getRangeAt(n);
    ok(false, "Should not be here");
  } catch(e) {
    ok(e instanceof DOMException, "Should be a DOMException");
    is(e.name, "IndexSizeError", "Should be an IndexSizeError");
    is(e.code, DOMException.INDEX_SIZE_ERR, "Should be an INDEX_SIZE_ERR");
  }
}
t(-1);
t(1);
</script>
</pre>
</body>
</html>