mozilla-central/layout/base/tests/test_synthmousemove_after_dnd.html (file symbol)

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Test Info: Errors

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name=viewport content="width=device-width,initial-scale=1">
<title>Test synthesized mouse move after drag and drop</title>
<link rel="stylesheet" href="/tests/SimpleTest/test.css">
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script src="/tests/SimpleTest/EventUtils.js"></script>
<script>
"use strict";
SimpleTest.waitForExplicitFinish();
SimpleTest.waitForFocus(async () => {
await SpecialPowers.pushPrefEnv({
set: [
["layout.reflow.synthMouseMove", true],
]
});
const source = document.getElementById("source");
const target = document.getElementById("target");
for (const type of ["dragover", "dragenter"]) {
target.addEventListener(type, event => {
event.dataTransfer.dropEffect = "copy";
event.preventDefault();
});
}
await (async function test_basic() {
const promiseDrop = new Promise(resolve => {
target.addEventListener("drop", event => {
event.preventDefault();
target.addEventListener("mouseover", resolve, {once: true});
}, { once: true });
});
getSelection().selectAllChildren(source);
synthesizePlainDragAndDrop({
srcSelection: getSelection(),
destElement: target,
});
await promiseDrop;
await new Promise(resolve =>
requestAnimationFrame(() => requestAnimationFrame(resolve))
);
is(
document.querySelector("span:hover"),
target,
"test_basic: The drop target should have hover state"
);
})();
document.querySelector("style").remove();
SimpleTest.finish();
});
</script>
<style>
* {
font-size: 48px;
}
</style>
</head>
<body>
<div>
<span id="source">Drag me!</span>
</div>
<div>
<span id="target">Drop here!</span>
</div>
</body>
</html>