test_hover_mouseleave.html

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<!doctype html>

<meta charset="utf-8">

<title>Test :hover state on mouseleave.</title>

<script src="/tests/SimpleTest/SimpleTest.js"></script>

<script src="/tests/SimpleTest/EventUtils.js"></script>

<link rel="stylesheet" href="/tests/SimpleTest/test.css"/>

<style>

div {

  width: 100px;

  height: 100px;

</style>

<div id="target" style="background: green;"></div>

<div id="outside" style="background: blue;"></div>

<script>

SimpleTest.waitForExplicitFinish();

let mouseLeaveCount = 0;

let mouseOutCount = 0;

target.addEventListener("mouseleave", () => {

  if (mouseLeaveCount++ != 0)

    return;

  is(target.matches(":hover"), false,

     "Should've been not hovered on mouseleave");

  is(outside.matches(":hover"), true,

     "New target should be hovered on mouseleave");

  if (mouseOutCount)

    SimpleTest.finish();

});

target.addEventListener("mouseout", () => {

  if (mouseOutCount++ != 0)

    return;

  is(target.matches(":hover"), false,

     "Should've been not hovered on mouseleave");

  is(outside.matches(":hover"), true,

     "New target should be hovered on mouseleave");

  if (mouseLeaveCount)

    SimpleTest.finish();

});

SimpleTest.waitForFocus(() => {

  synthesizeMouseAtCenter(outside, { type: "mousemove" });

  synthesizeMouseAtCenter(target, { type: "mousemove" });

  synthesizeMouseAtCenter(outside, { type: "mousemove" });

});

</script>