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Tests/LibWeb: Import WPT test for IDL handling of attribute setters

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This commit is contained in:
Shannon Booth
2026-01-31 12:26:43 +01:00
committed by Jelle Raaijmakers
parent 435f0634ea
commit 02e5e419d9
Notes: github-actions[bot] 2026-02-06 18:25:27 +00:00 
Author: https://github.com/shannonbooth
Commit: https://github.com/LadybirdBrowser/ladybird/commit/02e5e419d93
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/7699
Reviewed-by: https://github.com/gmta ✅
2 changed files with 199 additions and 0 deletions
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176
Tests/LibWeb/Text/input/wpt-import/webidl/ecmascript-binding/setter-argument.html Normal file
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<!doctype html>
<meta charset="utf-8">
<title>Setter should treat no arguments as undefined</title>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<body>
<script>
const invalidThisValues = [undefined, null, 1, {}, new Image()];
// String attribute.
test(() => {
const setter = Object.getOwnPropertyDescriptor(Animation.prototype, "id").set;
for (const thisValue of invalidThisValues) {
assert_throws_js(TypeError, () => { setter.call(thisValue); });
assert_throws_js(TypeError, () => { setter.call(thisValue, undefined); });
assert_throws_js(TypeError, () => { setter.call(thisValue, "foo"); });
}
}, `String attribute setter should throw if this value is invalid`);
test(() => {
const thisValue = new Animation();
const setter = Object.getOwnPropertyDescriptor(Animation.prototype, "id").set;
assert_equals(thisValue.id, "");
setter.call(thisValue);
assert_equals(thisValue.id, "undefined",
"undefined value should be stringified");
}, `String attribute setter should treat no arguments as undefined`);
test(() => {
const thisValue = new Animation();
const setter = Object.getOwnPropertyDescriptor(Animation.prototype, "id").set;
assert_equals(thisValue.id, "");
setter.call(thisValue, undefined);
assert_equals(thisValue.id, "undefined",
"undefined value should be stringified");
}, `String attribute setter called with undefined should behave in the same way as no arguments`);
test(() => {
const thisValue = new Animation();
const setter = Object.getOwnPropertyDescriptor(Animation.prototype, "id").set;
assert_equals(thisValue.id, "");
setter.call(thisValue, "foo");
assert_equals(thisValue.id, "foo");
}, `String attribute setter called with string should just work`);
// Object attribute.
test(() => {
const setter = Object.getOwnPropertyDescriptor(Document.prototype, "body").set;
for (const thisValue of invalidThisValues) {
assert_throws_js(TypeError, () => { setter.call(thisValue); });
assert_throws_js(TypeError, () => { setter.call(thisValue, undefined); });
assert_throws_js(TypeError, () => { setter.call(thisValue, "foo"); });
}
}, `Object attribute setter should throw if this value is invalid`);
test(() => {
const thisValue = new Document();
const setter = Object.getOwnPropertyDescriptor(Document.prototype, "body").set;
assert_throws_dom("HierarchyRequestError", () => { setter.call(thisValue); });
}, `Object attribute setter should treat no arguments as undefined`);
test(() => {
const thisValue = new Document();
const setter = Object.getOwnPropertyDescriptor(Document.prototype, "body").set;
assert_throws_dom("HierarchyRequestError", () => { setter.call(thisValue, undefined); });
}, `Object attribute setter called with undefined should behave in the same way as no arguments`);
// [Replaceable] attribute.
test(() => {
const thisValue = window;
const setter = Object.getOwnPropertyDescriptor(window, "scrollX").set;
setter.call(thisValue);
assert_equals(thisValue.scrollX, undefined);
}, `[Replaceable] setter should treat no arguments as undefined`);
test(() => {
const thisValue = window;
const setter = Object.getOwnPropertyDescriptor(window, "screenLeft").set;
setter.call(thisValue, undefined);
assert_equals(thisValue.screenLeft, undefined);
}, `[Replaceable] setter called with undefined should behave in the same way as no arguments`);
test(() => {
const thisValue = window;
const setter = Object.getOwnPropertyDescriptor(window, "screenTop").set;
setter.call(thisValue, "foo");
assert_equals(thisValue.screenTop, "foo");
}, `[Replaceable] setter called with other value should just work`);
// [LegacyLenientThis] attribute.
test(() => {
const setter = Object.getOwnPropertyDescriptor(HTMLElement.prototype, "onmouseenter").set;
for (const thisValue of invalidThisValues) {
setter.call(thisValue);
setter.call(thisValue, undefined);
setter.call(thisValue, "foo");
}
}, `[LegacyLenientThis] setter should not throw even if this value is invalid, regardless of the arguments count`);
test(() => {
const thisValue = document.createElement("div");
const setter = Object.getOwnPropertyDescriptor(HTMLElement.prototype, "onmouseenter").set;
setter.call(thisValue);
assert_equals(thisValue.onmouseenter, null);
}, `[LegacyLenientThis] setter should treat no arguments as undefined`);
test(() => {
const thisValue = document.createElement("div");
const setter = Object.getOwnPropertyDescriptor(HTMLElement.prototype, "onmouseenter").set;
setter.call(thisValue, undefined);
assert_equals(thisValue.onmouseenter, null);
}, `[LegacyLenientThis] setter called with undefined should behave in the same way as no arguments`);
// [LegacyLenientSetter] attribute.
test(() => {
const thisValue = new Document();
const setter = Object.getOwnPropertyDescriptor(Document.prototype, "fullscreenEnabled").set;
setter.call(thisValue);
assert_equals(thisValue.fullscreenEnabled, false);
}, `[LegacyLenientSetter] setter should treat no arguments as undefined`);
test(() => {
const thisValue = new Document();
const setter = Object.getOwnPropertyDescriptor(Document.prototype, "fullscreenEnabled").set;
setter.call(thisValue, undefined);
assert_equals(thisValue.fullscreenEnabled, false);
}, `[LegacyLenientSetter] setter called with undefined should behave in the same way as no arguments`);
// [PutForward] attribute.
test(() => {
const thisValue = document.createElement("a");
const setter = Object.getOwnPropertyDescriptor(HTMLAnchorElement.prototype, "relList").set;
assert_equals(thisValue.relList.length, 0);
setter.call(thisValue);
assert_equals(thisValue.relList.length, 1);
assert_equals(thisValue.relList[0], "undefined");
}, `[PutForward] setter should treat no arguments as undefined`);
test(() => {
const thisValue = document.createElement("a");
const setter = Object.getOwnPropertyDescriptor(HTMLAnchorElement.prototype, "relList").set;
assert_equals(thisValue.relList.length, 0);
setter.call(thisValue, undefined);
assert_equals(thisValue.relList.length, 1);
assert_equals(thisValue.relList[0], "undefined");
}, `[PutForward] setter called with undefined should behave in the same way as no arguments`);
</script>