mozilla-central/testing/web-platform/tests/css/css-pseudo/text-selection.html

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Test Info: Warnings

<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Pseudo-Elements Test: Text selection</title>
<link rel="author" title="Oriol Brufau" href="mailto:obrufau@igalia.com">
<meta name="assert" content="This test checks that text in a ::before or ::marker pseudo-element can't be selected." />
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<style>
.test {
font: 10px/1 Ahem;
margin-left: 200px;
}
#before::before {
content: "::before";
display: inline-block;
margin-left: -80px;
}
#marker {
display: list-item;
list-style-type: "::marker";
}
#before-marker::before {
content: "";
display: list-item;
list-style-type: "::marker";
height: 0;
}
</style>
<div class="test" id="before"><span>helloworld</span></div>
<div class="test" id="marker"><span>helloworld</span></div>
<div class="test" id="before-marker"><span>helloworld</span></div>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script>
function createSelection(element, start, end, step) {
getSelection().empty();
step = Math.abs(step);
const actions = new test_driver.Actions();
actions.pointerMove(start, 0, {origin: element});
actions.pointerDown();
if (start < end) {
for (let x = start + step; x < end; x += step)
actions.pointerMove(x, 0, {origin: element});
} else {
for (let x = start - step; x > end; x -= step)
actions.pointerMove(x, 0, {origin: element});
}
actions.pointerMove(end, 0, {origin: element});
actions.pointerUp();
return actions.send();
}
(async function() {
setup({ explicit_done: true });
for (let target of document.querySelectorAll(".test")) {
const contents = target.querySelector("span");
const text = contents.firstChild;
const s = getSelection();
// Create a selection that starts in the middle of the element contents
// and ends in the middle of the pseudo-element
await createSelection(contents, 0, -90, 10);
test(function(t) {
assert_equals(s.toString(), "hello", "toString");
assert_equals(s.anchorNode, text, "anchorNode");
assert_equals(s.anchorOffset, 5, "anchorOffset");
assert_equals(s.focusNode, text, "focusNode");
assert_equals(s.focusOffset, 0, "focusOffset");
}, "Selection ending in ::" + target.id);
// Create a selection that starts and ends inside the pseudo-element.
await createSelection(contents, -80, -110, 10);
test(function(t) {
assert_equals(s.toString(), "", "toString");
assert_in_array(s.anchorNode, [text, null], "anchorNode");
assert_equals(s.anchorOffset, 0, "anchorOffset");
assert_in_array(s.focusNode, [text, null], "focusNode");
assert_equals(s.focusOffset, 0, "focusOffset");
}, "Selection contained in ::" + target.id);
}
done();
})();
</script>