<!DOCTYPE HTML> <html> <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=468167 --> <head> <title>Test for Bug 468167</title> <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> <script type="application/javascript" src="/tests/SimpleTest/EventUtils.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=468167">Mozilla Bug 468167</a> <p id="display"> <textarea id="ta" rows="10" cols="80"></textarea> </p> <pre id="test"> <script type="application/javascript"> /** Test for Bug 468167 **/ SimpleTest.waitForExplicitFinish(); SimpleTest.waitForFocus(runTests); function runTests() { var ta = document.getElementById("ta"); ta.focus(); is(ta.scrollTop, 0, "initially scrolled to top"); var s = ""; for (var i = 0; i < 40; ++i) { // three characters per line if (i < 10) s += "0"; s += i + "\n"; } ta.value = s; is(ta.scrollTop, 0, "scrolled to top after adding content"); ta.scrollTop = 9999; // scroll down as far as we can isnot(ta.scrollTop, 0, "scrolled down after scrolling down"); ta.setSelectionRange(0, 99); // 33 lines out of 40 // Send a backspace key event to delete the selection synthesizeKey("VK_BACK_SPACE", { }); is(ta.scrollTop, 0, "scrolled to top after deleting selection"); SimpleTest.finish(); } </script> </pre> </body> </html>