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<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../resources/intersection-observer-test-utils.js"></script>
<style>
pre, #log {
position: absolute;
top: 0;
left: 200px;
}
#iframe {
width: 100px;
height: 100px;
border: 0;
margin-bottom: 10px;
}
#occluder {
width: 100px;
height: 100px;
background-color: blue;
position: relative;
}
</style>
<iframe id="iframe" src="../resources/scaled-target-subframe.html"></iframe>
<div id="occluder"></div>
<script>
async_test(function(t) {
let iframe = document.getElementById("iframe");
function step0(event) {
assert_equals(event.data, "");
}
function step1(event) {
iframe.style.transform = "scale(2)";
assert_equals(JSON.stringify(event.data),
JSON.stringify([true]));
}
function step2(event) {
assert_equals(JSON.stringify(event.data),
JSON.stringify([false]));
}
let steps = [step0, step1, step2];
window.addEventListener("message", event => {
if (steps.length) {
t.step(steps.shift(), t, event);
waitForFrame(t, () => {
iframe.contentWindow.postMessage("", "*")
});
} else {
t.done();
}
});
}, "IntersectionObserver V2 test with scale applied to target.");
</script>
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