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<!doctype html>
<title>Test for bug 1789191</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" href="/tests/SimpleTest/test.css"/>
<style>
@container (min-width: 0px) {
}
@container name (min-width: 0px) {
}
@container (min-height: 0px) {
}
div {
width: 100px;
height: 100px;
background-color: blue;
margin: 10px;
}
.container-height {
container-type: size;
}
.container-unnamed {
container-type: inline-size;
}
.container-named {
container-type: inline-size;
container-name: name;
}
</style>
<div id="child1"></div>
<div class="container-height" id="container1">
<div class="container-named" id="container2">
<div class="container-unnamed" id="container3">
<div id="child2"></div>
</div>
</div>
</div>
<script>
let sheet = document.querySelector("style").sheet;
let withoutFilter = SpecialPowers.wrap(sheet.cssRules[0]);
let withFilter = SpecialPowers.wrap(sheet.cssRules[1]);
let heightQuery = SpecialPowers.wrap(sheet.cssRules[2]);
// Container query selection requires up-to-date layout information.
document.body.getBoundingClientRect();
is(withoutFilter.queryContainerFor(child1), null, "No filter, no container");
is(withFilter.queryContainerFor(child1), null, "Filter, no container");
is(heightQuery.queryContainerFor(child1), null, "Height, no container");
is(SpecialPowers.unwrap(withoutFilter.queryContainerFor(child2)), container3, "No filter, container");
is(SpecialPowers.unwrap(withFilter.queryContainerFor(child2)), container2, "Filter");
is(SpecialPowers.unwrap(heightQuery.queryContainerFor(child2)), container1, "Height");
</script>
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