<!DOCTYPE HTML> <html> <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=590554 --> <head> <title>Test for Bug 590554</title> <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> <script type="text/javascript" src="/tests/SimpleTest/EventUtils.js"></script> </head> <body> <script type="application/javascript"> /** Test for Bug 590554 **/ SimpleTest.waitForExplicitFinish(); SimpleTest.waitForFocus(function() { var t = document.querySelector("textarea"); t.focus(); synthesizeKey("VK_RETURN", {}); is(t.value, "\n", "Pressing enter should work the first time"); synthesizeKey("VK_RETURN", {}); is(t.value, "\n", "Pressing enter should not work the second time"); SimpleTest.finish(); }); </script> <textarea maxlength="1"></textarea> </body> </html>