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Test Info:

<!DOCTYPE html>
<!--
-->
<html>
<head>
<title>Test for Bug 1568996</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script src="/tests/SimpleTest/EventUtils.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<p id="display"></p>
<div id="content" style="display: none"></div>
<pre id="test"></pre>
<input id="input1">
<script>
add_task(async () => {
await new Promise((resolve) => {
SimpleTest.waitForFocus(() => {
SimpleTest.executeSoon(resolve);
}, window);
});
let input1 = document.getElementById("input1");
input1.value = "hello"
input1.focus();
input1.setSelectionRange(0, 0);
input1.addEventListener('keydown', () => {
let s = input1.selectionStart;
let e = input1.selectionEnd;
input1.value = input1.value.toUpperCase();
input1.setSelectionRange(s, e);
});
input1.addEventListener('input', () => {
let s = input1.selectionStart;
let e = input1.selectionEnd;
input1.value = input1.value.toLowerCase();
input1.setSelectionRange(s, e);
});
synthesizeKey('1');
synthesizeKey('KEY_Delete');
is(input1.value, "1ello", "Delete key should be worked");
synthesizeKey('B');
synthesizeKey('KEY_Delete');
synthesizeKey('KEY_Delete');
is(input1.value, "1blo", "Multiple delete key should be worked");
synthesizeKey('KEY_ArrowRight');
synthesizeKey('2');
synthesizeKey('KEY_Delete');
is(input1.value, "1bl2", "Delete key should be worked");
synthesizeKey('3');
is(input1.value, "1bl23", "charcter should be inserted");
synthesizeKey('KEY_Backspace');
is(input1.value, "1bl2", "Backspace key should be worked");
});
</script>
</body>
</html>