<!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>