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<!doctype html>
<title>Test for bug 1351248</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script src="/tests/SimpleTest/EventUtils.js"></script>
<style>
fieldset {
overflow: auto;
height: 1em;
width: 1em;
}
</style>
<input type="text" id="start">
<fieldset>
<input type="text">
<input type="text">
<input type="text">
<input type="text">
<input type="text">
<input type="text">
</fieldset>
<input type="text" id="end">
<script>
SimpleTest.waitForExplicitFinish();
SimpleTest.waitForFocus(async function() {
// Enable Full Keyboard Access emulation on Mac.
if (navigator.platform.indexOf("Mac") === 0) {
await SpecialPowers.pushPrefEnv({"set": [["accessibility.tabfocus", 7]]});
}
const start = document.getElementById("start");
start.focus();
const end = document.getElementById("end");
is(document.activeElement, start, "Focus moved sanely");
let lastActiveElement = start;
let stack = [start];
do {
synthesizeKey("KEY_Tab");
isnot(document.activeElement, lastActiveElement, "Focus should've moved once per tab keypress");
lastActiveElement = document.activeElement;
stack.push(lastActiveElement);
} while (document.activeElement != end)
is(stack.length, document.querySelectorAll("input").length + 1, "Fieldset should be focusable");
do {
let previous = stack.pop();
is(document.activeElement, previous, "Focus should've moved backwards as expected");
synthesizeKey("KEY_Tab", {shiftKey: true});
} while (stack.length);
SimpleTest.finish();
});
</script>
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