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test: verify listener leak is only emitted once

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When a possible listener leak is detected, a warning is
emitted. This commit updates an existing test to verify that the
warning is only emitted once.

PR-URL: https://github.com/nodejs/node/pull/12502
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
This commit is contained in:
cjihrig 2017-04-18 21:30:53 -04:00
parent 58066d16d5
commit 5e095f699e
1 changed files with 2 additions and 1 deletions
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3
test/parallel/test-event-emitter-max-listeners-warning.js
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@ -19,4 +19,5 @@ process.on('warning', common.mustCall((warning) => {
}));
e.on('event-type', common.noop);
e.on('event-type', common.noop);
e.on('event-type', common.noop); // Trigger warning.
e.on('event-type', common.noop); // Verify that warning is emitted only once.