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Automate pointerevent-drag-interaction WPT test #56979

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Merged
chromium-wpt-export-bot merged 1 commit into from
Jan 5, 2026
+123 −103
Merged

Automate pointerevent-drag-interaction WPT test #56979

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103 changes: 0 additions & 103 deletions pointerevents/html/pointerevent_drag_interaction-manual.html
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123 changes: 123 additions & 0 deletions pointerevents/pointerevent-drag-interaction.html
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<!DOCTYPE html>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<meta name="timeout" content="long">
<title>Pointer Events interaction with drag and drop</title>
<link rel="author" href="mailto:[email protected]">
<link rel="help" href="https://w3c.github.io/pointerevents/">
<link rel="stylesheet" type="text/css" href="pointerevent_styles.css">
<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 src="pointerevent_support.js"></script>

<div id="testContainer">
<div draggable="true" id="target0"></div>
<div id="target1"></div>
</div>

<script>
let received_events = [];

function reset() {
received_events = [];
// Use ESC to cancel drag session.
const Escape = '\uE00C';
return new test_driver.Actions()
.keyDown(Escape)
.keyUp(Escape)
.send();
}

function performDrag() {
return new test_driver.Actions()
.addPointer('pointer-drag', 'mouse')
.pointerMove(0, 0, { origin: target0 })
.pointerDown()
.pointerMove(10, 10, { origin: target0 })
.pointerMove(0, 0, { origin: target1 })
.pause(100)
.pointerUp()
.send();
}

function on(t, target, eventName, handler) {
target.addEventListener(eventName, handler);
t.add_cleanup(() => target.removeEventListener(eventName, handler));
}

function trackEvents(t, target, eventNames) {
eventNames.forEach(name => {
on(t, target, name, e => received_events.push(e.type + '@' + target.id));
});
}

promise_test(async t => {
t.add_cleanup(reset);

trackEvents(t, target0, ['pointerdown', 'mousedown', 'dragstart', 'pointercancel']);
const pointerCancelPromise = new Promise(resolve => {
on(t, target0, 'pointercancel', resolve);
});

await performDrag();
await pointerCancelPromise;

assert_equals(received_events.join(', '),
'pointerdown@target0, mousedown@target0, dragstart@target0, pointercancel@target0');
}, 'Pointercancel should be fired with the expected order when drag operation starts');

promise_test(async t => {
t.add_cleanup(reset);

trackEvents(t, target0, ['pointerdown', 'mousedown', 'gotpointercapture', 'dragstart', 'pointercancel', 'lostpointercapture']);
on(t, target0, 'pointerdown', e => target0.setPointerCapture(e.pointerId));
const lostCapturePromise = new Promise(resolve => {
on(t, target0, 'lostpointercapture', resolve);
});

await performDrag();
await lostCapturePromise;

assert_equals(
received_events.join(', '),
'pointerdown@target0, mousedown@target0, gotpointercapture@target0, dragstart@target0, pointercancel@target0, lostpointercapture@target0');
}, 'Pointercancel and lostpointercapture should be fired with the expected order when drag operation starts (capture on pointerdown)');

promise_test(async t => {
t.add_cleanup(reset);
let pointerId = -1;

trackEvents(t, target0, ['pointerdown', 'mousedown', 'gotpointercapture', 'dragstart', 'pointercancel', 'lostpointercapture']);
on(t, target0, 'pointerdown', e => { pointerId = e.pointerId; });
on(t, target0, 'mousedown', e => { target0.setPointerCapture(pointerId); });
const lostCapturePromise = new Promise(resolve => {
on(t, target0, 'lostpointercapture', resolve);
});

await performDrag();
await lostCapturePromise;

assert_equals(received_events.join(', '),
'pointerdown@target0, mousedown@target0, gotpointercapture@target0, dragstart@target0, pointercancel@target0, lostpointercapture@target0');
}, 'Pointercancel and lostpointercapture should be fired with the expected order when drag operation starts (capture on mousedown)');

promise_test(async t => {
t.add_cleanup(reset);

trackEvents(t, target0, ['pointerdown', 'mousedown', 'dragstart']);
trackEvents(t, target1, ['pointerup']);
on(t, target0, 'dragstart', e => e.preventDefault());
const pointerUpPromise = new Promise(resolve => {
on(t, target1, 'pointerup', resolve);
});

await performDrag();
await pointerUpPromise;

assert_equals(received_events.join(', '),
'pointerdown@target0, mousedown@target0, dragstart@target0, pointerup@target1');
}, 'Pointerevent stream should not get interrupted when drag is prevented.');
</script>