49 lines
1.4 KiB
HTML
49 lines
1.4 KiB
HTML
<!DOCTYPE html>
|
|
<html class="reftest-wait foo">
|
|
<title>View transitions: ensure :only-child is supported on view-transition-image-pair</title>
|
|
<link rel="help" href="https://drafts.csswg.org/css-view-transitions-1/">
|
|
<link rel="author" href="mailto:khushalsagar@chromium.org">
|
|
|
|
<script src="/resources/testharness.js"></script>
|
|
<script src="/resources/testharnessreport.js"></script>
|
|
|
|
<style>
|
|
::view-transition {
|
|
background-color: black;
|
|
}
|
|
html:only-child {
|
|
background-color: black;
|
|
}
|
|
:root:only-child {
|
|
background-color: black;
|
|
}
|
|
:only-child {
|
|
background-color: black;
|
|
}
|
|
.foo:only-child {
|
|
background-color: black;
|
|
}
|
|
|
|
::view-transition-image-pair(root):only-child {
|
|
background-color: red;
|
|
}
|
|
::view-transition-image-pair(*):only-child {
|
|
color: red;
|
|
}
|
|
</style>
|
|
|
|
<script>
|
|
promise_test(() => {
|
|
assert_implements(document.startViewTransition, "Missing document.startViewTransition");
|
|
return new Promise(async (resolve, reject) => {
|
|
let transition = document.startViewTransition();
|
|
transition.ready.then(() => {
|
|
let style = getComputedStyle(document.documentElement, "::view-transition-image-pair(root)");
|
|
if (style.backgroundColor == "rgb(255, 0, 0)" && style.color == "rgb(255, 0, 0)")
|
|
resolve();
|
|
else
|
|
reject(style.backgroundColor + " and " + style.color);
|
|
});
|
|
});
|
|
}, ":only-child should always match for ::view-transition-image-pair");
|
|
</script>
|