Tests: Import WPT tests for clientLeft and clientTop

Import several WPT tests covering client* properties:
- client-props-input.html (border offsets on input/textarea)
- client-props-root.html (root element client properties)
- client-props-zoom.html (client properties with zoom)
- client-props-inline-list-item.html (inline list-item display)
- client-props-root-display-none-crash.html (crash test)
- table-client-props.html (table element client properties)
This commit is contained in:
Andreas Kling
2026-02-22 11:42:05 +01:00
committed by Jelle Raaijmakers
parent 675a7d4c0c
commit 90cfa2597d
Notes: github-actions[bot] 2026-02-22 12:25:22 +00:00
11 changed files with 309 additions and 0 deletions

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<!doctype html>
<title>client* returns the same for non-replaced inlines regardless of list-item-ness</title>
<link rel="help" href="https://drafts.csswg.org/cssom-view/#extension-to-the-element-interface">
<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1581467">
<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
<link rel="author" title="Mozilla" href="https://mozilla.org">
<script src=../../resources/testharness.js></script>
<script src=../../resources/testharnessreport.js></script>
<style>
.li {
display: inline list-item;
}
</style>
<div style="position: absolute"><span>Foo</span></div>
<div style="position: absolute"><span class="li">Foo</span></div>
<script>
test(() => {
let first = document.querySelector("span");
let second = document.querySelector(".li");
assert_equals(first.clientWidth, second.clientWidth, "clientWidth should match");
assert_equals(first.clientHeight, second.clientHeight, "clientHeight should match");
assert_equals(first.clientTop, second.clientTop, "clientTop should match");
assert_equals(first.clientLeft, second.clientLeft, "clientLeft should match");
}, "client* returns the same for non-replaced inlines regardless of list-item-ness");
</script>

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<!doctype html>
<title>client* on input / textarea</title>
<link rel="help" href="https://drafts.csswg.org/cssom-view/#extension-to-the-element-interface">
<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1654769">
<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
<link rel="author" title="Mozilla" href="https://mozilla.org">
<script src=../../resources/testharness.js></script>
<script src=../../resources/testharnessreport.js></script>
<style>
input, textarea {
-webkit-appearance: none;
appearance: none;
height: 200px;
width: 300px;
border-style: solid;
border-width: 10px 20px;
padding: 2px;
box-sizing: content-box;
}
.block { display: block; }
</style>
<input>
<textarea></textarea>
<input class="block">
<textarea class="block"></textarea>
<script>
test(() => {
for (let element of document.querySelectorAll("input, textarea")) {
let description = `${element.nodeName} ${element.className}: `;
assert_equals(element.clientHeight, 204, description + "clientHeight should be the padding box height");
assert_equals(element.clientTop, 10, description + "clientTop should include the border offset");
// <input> clips to the content box edge in the inline axis, so it should also include the padding offset.
let expectedLeft = 20;
let expectedWidth = 304;
if (element.nodeName == "INPUT") {
expectedLeft += 2;
expectedWidth -= 4;
}
assert_equals(element.clientWidth, expectedWidth, description + "clientWidth should be the padding box for textarea, content box for input");
assert_equals(element.clientLeft, expectedLeft, description + "clientLeft should include the border offset for textarea and border + padding for input");
}
}, "client* on input / textarea");
</script>

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<!doctype html>
<title>client* on the scrolling element</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1">
<link rel="help" href="https://drafts.csswg.org/cssom-view/#extension-to-the-element-interface">
<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1654769">
<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
<link rel="author" title="Mozilla" href="https://mozilla.org">
<script src=../../resources/testharness.js></script>
<script src=../../resources/testharnessreport.js></script>
<style>
:root {
/* Ensure the width of the root element's box is smaller than the viewport. */
margin: 5px;
/* Remove the scrollbars so that we can test {Width, Height}. */
scrollbar-width: none;
/* Would love to add a border but https://github.com/w3c/csswg-drafts/issues/5363 */
}
</style>
<div style="height: 200vh; width: 200vw"></div>
<script>
test(function() {
scrollTo(100, 100);
assert_equals(document.documentElement.clientTop, 0, "Client top doesn't depend on scrolling");
assert_equals(document.documentElement.clientLeft, 0, "Client left doesn't depend on scrolling");
assert_equals(document.documentElement.clientWidth, window.innerWidth, "Without scrollbars, client width should match viewport width");
assert_equals(document.documentElement.clientHeight, window.innerHeight, "Without scrollbars, client height should match viewport height");
}, "client* properties on the root element");
</script>

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<!DOCTYPE html>
<title>Client properties for elements with css zoom</title>
<link rel="author" title="Yotam Hacohen" href="mailto:yotha@chromium.org">
<link rel="author" title="Google" href="http://www.google.com/">
<link rel="help" href="https://drafts.csswg.org/css-viewport/">
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<style>
.test_content div {
width: 64px;
height: 64px;
background-color: cyan;
}
.test_content div.x4_zoom {
zoom: 4.0;
}
</style>
<body>
<div class="test_content">
<div id="no_zoom"></div>
<div class="x4_zoom" id="element_with_zoom"></div>
<div class="x4_zoom">
<div id="direct_child_of_element_with_zoom"></div>
<div>
<div id="indirect_child_of_element_with_zoom"></div>
</div>
<div class="x4_zoom" id="both_child_and_parent_has_zoom"></div>
</div>
</div>
<script>
setup(() => {
window.noZoom = document.getElementById("no_zoom");
});
function compareObjectToDivWithNoZoom(object){
assert_equals(object.clientTop, noZoom.clientTop, 'clientTop');
assert_equals(object.clientLeft, noZoom.clientLeft, 'clientLeft');
assert_equals(object.clientWidth, noZoom.clientWidth, 'clientWidth');
assert_equals(object.clientHeight ,noZoom.clientHeight, 'clientHeight');
}
test(function() {
assert_true(!!noZoom, "no zoom target exists");
});
test(function() {
compareObjectToDivWithNoZoom(document.getElementById("element_with_zoom"));
compareObjectToDivWithNoZoom(document.getElementById("direct_child_of_element_with_zoom"));
compareObjectToDivWithNoZoom(document.getElementById("indirect_child_of_element_with_zoom"));
compareObjectToDivWithNoZoom(document.getElementById("both_child_and_parent_has_zoom"));
});
</script>
</body>

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<!doctype html>
<meta charset=utf-8>
<title>client* properties on tables</title>
<link rel="help" href="https://drafts.csswg.org/cssom-view/#extension-to-the-element-interface">
<script src=../../resources/testharness.js></script>
<script src=../../resources/testharnessreport.js></script>
<div id="test-target" style="position: absolute"></div>
<script>
test(function() {
// Each test consists of four elements: the markup to use, the expected
// value of offsetWidth on the table, the expected value of offsetHeight
// on the table, and the description string.
var tests = [
[ `<table style="width: 20px; height: 30px">`,
20, 30,
"Basic table" ],
[ `<table><caption style="width: 40px; height: 50px">`,
40, 50,
"Basic caption" ],
[ `<table style="width: 20px; height: 30px">
<caption style="width: 10px; height: 20px">`,
20, 50,
"Table and narrower caption" ],
[ `<table style="width: 20px; height: 30px">
<caption style="width: 40px; height: 20px">`,
40, 50,
"Table and wider caption" ],
[ `<table style="width: 20px; height: 30px; padding: 1px 2px 3px 4px">`,
20, 30,
"Table with padding" ],
[ `<table style="width: 20px; height: 30px; padding: 1px 2px 3px 4px;
box-sizing: content-box">`,
26, 34,
"Table with padding and content-box sizing" ],
[ `<table style="width: 20px; height: 30px;
border-width: 1px 2px 3px 4px; border-style: solid;
border-collapse: separate; box-sizing: content-box">`,
26, 34,
"Table with separated border" ],
[ `<table style="width: 20px; height: 30px;
border-width: 2px 4px 6px 8px; border-style: solid;
border-collapse: collapse; box-sizing: content-box">
<tr><td>`,
26, 34,
"Table with collapsed border" ],
[ `<div style="display: flex">
<table style="width: 20px; height: 30px;
border-width: 1px 2px 3px 4px; border-style: solid;
border-collapse: separate; box-sizing: content-box">`,
26, 34,
"Flex-level table with separated border" ],
[ `<div style="display: flex">
<table style="width: 20px; height: 30px;
border-width: 2px 4px 6px 8px; border-style: solid;
border-collapse: collapse; box-sizing: content-box">
<tr><td>`,
26, 34,
"Flex-level table with collapsed border" ],
[ `<table>
<caption style="width: 40px; height: 50px; padding: 1px 2px 3px 4px">`,
46, 54,
"Caption with padding" ],
[ `<table>
<caption style="width: 40px; height: 50px;
border-width: 1px 2px 3px 4px; border-style: solid">`,
46, 54,
"Caption with border" ],
[ `<table>
<caption style="width: 40px; height: 50px; margin: 1px 2px 3px 4px;">`,
46, 54,
"Caption with margin" ],
[ `<table style="caption-side: bottom">
<caption style="width: 40px; height: 50px;">`,
40, 50,
"Bottom caption" ],
];
function target() {
return document.getElementById("test-target");
}
function table() {
return target().querySelector("table");
}
for (var t of tests) {
test(function() {
target().innerHTML = t[0];
assert_equals(table().clientWidth, t[1], t[3] + " clientWidth");
assert_equals(table().clientHeight, t[2], t[3] + " clientHeight");
assert_equals(table().clientLeft, 0, t[3] + " clientLeft");
assert_equals(table().clientTop, 0, t[3] + " clientTop");
}, t[3]);
}
}, "Overall test to make sure there are no exceptions");
</script>