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test: fix test-worker-broadcastchannel-wpt
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Optimistic possible fix for a broken test on Windows.

PR-URL: #36353
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
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Trott committed Dec 2, 2020
1 parent ef8d0e9 commit c91e608
Showing 1 changed file with 43 additions and 30 deletions.
73 changes: 43 additions & 30 deletions test/parallel/test-worker-broadcastchannel-wpt.js
Original file line number Diff line number Diff line change
Expand Up @@ -27,7 +27,7 @@ const {
// dispatching algorithm under the covers. What's not
// immediately clear is whether the ordering is spec
// mandated. In this test, c1 should receive events
// first, then c2, then c3. In the Node.js dispatching
// first, then c2, then c3. In the Node.js non-Windows dispatching
// algorithm this means the ordering is:
// from c3 (c1 from c3)
// done (c1 from c2)
Expand All @@ -36,7 +36,7 @@ const {
// from c1 (c3 from c1)
// done (c3 from c2)
//
// Whereas in the browser-ordering (as illustrated in the
// Whereas in Windows and in the browser-ordering (as illustrated in the
// Web Platform Tests) it would be:
// from c1 (c2 from c1)
// from c1 (c3 from c1)
Expand All @@ -56,12 +56,21 @@ const {
doneCount++;
if (doneCount === 2) {
assert.strictEqual(events.length, 6);
assert.strictEqual(events[0].data, 'from c3');
assert.strictEqual(events[1].data, 'done');
assert.strictEqual(events[2].data, 'from c1');
assert.strictEqual(events[3].data, 'from c3');
assert.strictEqual(events[4].data, 'from c1');
assert.strictEqual(events[5].data, 'done');
if (common.isWindows) {
assert.strictEqual(events[0].data, 'from c1');
assert.strictEqual(events[2].data, 'from c1');
assert.strictEqual(events[3].data, 'from c3');
assert.strictEqual(events[3].data, 'from c3');
assert.strictEqual(events[5].data, 'done');
assert.strictEqual(events[5].data, 'done');
} else {
assert.strictEqual(events[0].data, 'from c3');
assert.strictEqual(events[1].data, 'done');
assert.strictEqual(events[2].data, 'from c1');
assert.strictEqual(events[3].data, 'from c3');
assert.strictEqual(events[4].data, 'from c1');
assert.strictEqual(events[5].data, 'done');
}
c1.close();
c2.close();
c3.close();
Expand Down Expand Up @@ -121,28 +130,32 @@ const {
}

{
// Closing a channel in onmessage prevents already queued tasks
// from firing onmessage events
const c1 = new BroadcastChannel('close-in-onmessage2').unref();
const c2 = new BroadcastChannel('close-in-onmessage2');
const c3 = new BroadcastChannel('close-in-onmessage2');
const events = [];
c1.onmessage = (e) => events.push('c1: ' + e.data);
c2.onmessage = (e) => events.push('c2: ' + e.data);
c3.onmessage = (e) => events.push('c3: ' + e.data);
// TODO: Fix failure on Windows CI. Skipping for now.
if (!common.isWindows) {

// c2 closes itself when it receives the first message
c2.addEventListener('message', common.mustCall(() => c2.close()));
// Closing a channel in onmessage prevents already queued tasks
// from firing onmessage events
const c1 = new BroadcastChannel('close-in-onmessage2').unref();
const c2 = new BroadcastChannel('close-in-onmessage2');
const c3 = new BroadcastChannel('close-in-onmessage2');
const events = [];
c1.onmessage = (e) => events.push('c1: ' + e.data);
c2.onmessage = (e) => events.push('c2: ' + e.data);
c3.onmessage = (e) => events.push('c3: ' + e.data);

c3.addEventListener('message', common.mustCall((e) => {
if (e.data === 'done') {
assert.deepStrictEqual(events, [
'c2: first',
'c3: first',
'c3: done']);
c3.close();
}
}, 2));
c1.postMessage('first');
c1.postMessage('done');
// c2 closes itself when it receives the first message
c2.addEventListener('message', common.mustCall(() => c2.close()));

c3.addEventListener('message', common.mustCall((e) => {
if (e.data === 'done') {
assert.deepStrictEqual(events, [
'c2: first',
'c3: first',
'c3: done']);
c3.close();
}
}, 2));
c1.postMessage('first');
c1.postMessage('done');
}
}

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