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test: fix flaky test-dgram-pingpong #5125

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@Trott Trott commented Feb 6, 2016

There is no guarantee UDP messages will be received. Accommodate the
occasional dropped message.

This is a functionality test, not a performance benchmark. Speed up the
test by sending 5 messages per server rather than 500.

Fixes: #4526

@Trott Trott added dgram Issues and PRs related to the dgram subsystem / UDP. test Issues and PRs related to the tests. lts-watch-v4.x labels Feb 6, 2016
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Trott commented Feb 6, 2016

assert.equal('PONG', msg.toString('ascii'));

count += 1;
client.on('message', function(msg) {
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Perhaps the callback here should be wrapped with common.mustCall(..., N)?

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I could go either way on it. I left it without common.mustCall() and used the assert.strictEqual(pongsReceived, N); instead so that it would be readily apparent that it's the analogous check to assert(pingsReceived >= N);.

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Trott commented Feb 6, 2016

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Trott commented Feb 6, 2016

So, looking at the stress test results, these changes greatly reduce the flakiness but don't eliminate it... More to be done...

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Trott commented Feb 7, 2016

OK, greatly revised. @mscdex, PTAL.

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Trott commented Feb 7, 2016

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Trott commented Feb 7, 2016

Stress test passed. CI failure is unrelated test.

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mscdex commented Feb 7, 2016

LGTM

console.log('done');
});
const server = pingPongTest(common.PORT, 'localhost');
server.on('close', common.mustCall(pingPongTest.bind(this, common.PORT)));
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Binding this suggests it's somehow important but it's not, is it? It's always undefined, if I read the diff right.

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LGTM with a nit.

There is no guarantee UDP messages will be received. Accommodate the
occasional dropped message.

This is a functionality test, not a performance benchmark. Speed up the
test by not sending 1500 messages across three ports.

Fixes: nodejs#4526
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Trott commented Feb 7, 2016

Nit addressed. CI again: https://ci.nodejs.org/job/node-test-pull-request/1579/

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jasnell commented Feb 7, 2016

LGTM

jasnell pushed a commit that referenced this pull request Feb 7, 2016
There is no guarantee UDP messages will be received. Accommodate the
occasional dropped message.

This is a functionality test, not a performance benchmark. Speed up the
test by not sending 1500 messages across three ports.

Fixes: #4526
PR-URL: #5125
Reviewed-By: Brian White <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: James M Snell <[email protected]>
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jasnell commented Feb 7, 2016

Landed in 987e9e3

@jasnell jasnell closed this Feb 7, 2016
rvagg pushed a commit that referenced this pull request Feb 8, 2016
There is no guarantee UDP messages will be received. Accommodate the
occasional dropped message.

This is a functionality test, not a performance benchmark. Speed up the
test by not sending 1500 messages across three ports.

Fixes: #4526
PR-URL: #5125
Reviewed-By: Brian White <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: James M Snell <[email protected]>
rvagg pushed a commit that referenced this pull request Feb 9, 2016
There is no guarantee UDP messages will be received. Accommodate the
occasional dropped message.

This is a functionality test, not a performance benchmark. Speed up the
test by not sending 1500 messages across three ports.

Fixes: #4526
PR-URL: #5125
Reviewed-By: Brian White <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: James M Snell <[email protected]>
@MylesBorins MylesBorins mentioned this pull request Feb 12, 2016
MylesBorins pushed a commit that referenced this pull request Feb 18, 2016
There is no guarantee UDP messages will be received. Accommodate the
occasional dropped message.

This is a functionality test, not a performance benchmark. Speed up the
test by not sending 1500 messages across three ports.

Fixes: #4526
PR-URL: #5125
Reviewed-By: Brian White <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: James M Snell <[email protected]>
MylesBorins pushed a commit that referenced this pull request Feb 18, 2016
There is no guarantee UDP messages will be received. Accommodate the
occasional dropped message.

This is a functionality test, not a performance benchmark. Speed up the
test by not sending 1500 messages across three ports.

Fixes: #4526
PR-URL: #5125
Reviewed-By: Brian White <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: James M Snell <[email protected]>
@MylesBorins MylesBorins mentioned this pull request Feb 18, 2016
MylesBorins pushed a commit that referenced this pull request Mar 2, 2016
There is no guarantee UDP messages will be received. Accommodate the
occasional dropped message.

This is a functionality test, not a performance benchmark. Speed up the
test by not sending 1500 messages across three ports.

Fixes: #4526
PR-URL: #5125
Reviewed-By: Brian White <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: James M Snell <[email protected]>
scovetta pushed a commit to scovetta/node that referenced this pull request Apr 2, 2016
There is no guarantee UDP messages will be received. Accommodate the
occasional dropped message.

This is a functionality test, not a performance benchmark. Speed up the
test by not sending 1500 messages across three ports.

Fixes: nodejs#4526
PR-URL: nodejs#5125
Reviewed-By: Brian White <[email protected]>
Reviewed-By: Ben Noordhuis <[email protected]>
Reviewed-By: James M Snell <[email protected]>
@Trott Trott deleted the pingpong branch January 13, 2022 22:42
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5 participants