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LibWeb/HTML: Default ErrorEvent error to undefined

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This was a change in the HTML spec, see:

https://github.com/whatwg/html/commit/032523196
This commit is contained in:
Shannon Booth
2025-01-05 20:21:22 +13:00
committed by Andreas Kling
parent cb9e3d5c9b
commit 8214371ad5
4 changed files with 73 additions and 2 deletions
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2
Libraries/LibWeb/HTML/ErrorEvent.h
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@@ -17,7 +17,7 @@ struct ErrorEventInit : public DOM::EventInit {
String filename; String filename;
u32 lineno { 0 }; u32 lineno { 0 };
u32 colno { 0 }; u32 colno { 0 };
JS::Value error { JS::js_null() }; JS::Value error { JS::js_undefined() };
}; };
// https://html.spec.whatwg.org/multipage/webappapis.html#errorevent // https://html.spec.whatwg.org/multipage/webappapis.html#errorevent

3
Libraries/LibWeb/HTML/ErrorEvent.idl
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@@ -12,10 +12,11 @@ interface ErrorEvent : Event {
readonly attribute any error; readonly attribute any error;
}; };
// https://html.spec.whatwg.org/#erroreventinit
dictionary ErrorEventInit : EventInit { dictionary ErrorEventInit : EventInit {
DOMString message = ""; DOMString message = "";
USVString filename = ""; USVString filename = "";
unsigned long lineno = 0; unsigned long lineno = 0;
unsigned long colno = 0; unsigned long colno = 0;
any error = null; any error;
}; };

10
Tests/LibWeb/Text/expected/wpt-import/html/webappapis/scripting/events/event-handler-processing-algorithm-error/document-synthetic-errorevent.txt Normal file
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@@ -0,0 +1,10 @@
Harness status: OK
Found 5 tests
5 Pass
Pass error event is normal (return true does not cancel; one arg) on Document, with a synthetic ErrorEvent
Pass Initial values of ErrorEvent members
Pass error member can be set to null
Pass error member can be set to undefined
Pass error member can be set to arbitrary

60
Tests/LibWeb/Text/input/wpt-import/html/webappapis/scripting/events/event-handler-processing-algorithm-error/document-synthetic-errorevent.html Normal file
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@@ -0,0 +1,60 @@
<!DOCTYPE html>
<meta charset="utf-8">
<title>Event handlers processing algorithm: error events</title>
<script src="../../../../../resources/testharness.js"></script>
<script src="../../../../../resources/testharnessreport.js"></script>
<link rel="help" href="https://html.spec.whatwg.org/multipage/#the-event-handler-processing-algorithm">
<link rel="author" title="Domenic Denicola" href="mailto:d@domenic.me">
<div id="log"></div>
<script>
"use strict";
setup({ allow_uncaught_exception: true });
promise_test(t => {
document.onerror = t.step_func((...args) => {
assert_equals(args.length, 1);
return true;
});
const eventWatcher = new EventWatcher(t, document, "error");
const promise = eventWatcher.wait_for("error").then(e => {
assert_equals(e.defaultPrevented, false);
assert_equals(e.message, "");
assert_equals(e.filename, "");
assert_equals(e.lineno, 0);
assert_equals(e.colno, 0);
assert_equals(e.error, undefined);
});
document.dispatchEvent(new ErrorEvent("error", { cancelable: true }));
return promise;
}, "error event is normal (return true does not cancel; one arg) on Document, with a synthetic ErrorEvent");
test(() => {
const e = new ErrorEvent("error");
assert_equals(e.message, "");
assert_equals(e.filename, "");
assert_equals(e.lineno, 0);
assert_equals(e.colno, 0);
assert_equals(e.error, undefined);
}, "Initial values of ErrorEvent members")
test(() => {
const e = new ErrorEvent("error", {error : null});
assert_equals(e.error, null);
}, "error member can be set to null")
test(() => {
const e = new ErrorEvent("error", {error : undefined});
assert_equals(e.error, undefined);
}, "error member can be set to undefined")
test(() => {
const e = new ErrorEvent("error", {error : "foo"});
assert_equals(e.error, "foo");
}, "error member can be set to arbitrary")
</script>