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test: fix race condition in unrefd interval test #3550

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test: fix race condition in unrefd interval test #3550

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test: fix race condition in unrefd interval test
mcornac Oct 27, 2015
06d1980
test: clear timeout on last unrefd interval fire
mcornac Oct 28, 2015
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test: clear timeout on last unrefd interval fire
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@mcornac
mcornac committed Nov 9, 2015
commit 06d1980353ce26ca1cca5b79cde6b34d40af71d5
34 changes: 17 additions & 17 deletions test/parallel/test-timers-unrefd-interval-still-fires.js
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Expand Up @@ -2,27 +2,27 @@
/*
* This test is a regression test for joyent/node#8900.
*/
require('../common');
var assert = require('assert');
const common = require('../common');
const assert = require('assert');

var N = 5;
const TEST_DURATION = common.platformTimeout(100);
const N = 5;
var nbIntervalFired = 0;
var timer = setInterval(function() {

const keepOpen = setTimeout(() => {
console.error('[FAIL] Interval fired %d/%d times.', nbIntervalFired, N);
throw new Error('Test timed out. keepOpen was not canceled.');
}, TEST_DURATION);

const timer = setInterval(() => {
++nbIntervalFired;
if (nbIntervalFired === N)
if (nbIntervalFired === N) {
clearInterval(timer);
timer._onTimeout = () => {
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@mcornac mcornac Nov 9, 2015

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@Fishrock123 Is this the change you had in mind or should I also not clear the keepOpen timeout to give the error a chance to happen.

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@Fishrock123 Fishrock123 Nov 9, 2015

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Maybe wrap clearInterval in setImmediate()?

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@mcornac mcornac Nov 9, 2015

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Updated

throw new Error('Unrefd interval fired after being cleared.');
};
setImmediate(() => clearTimeout(keepOpen));
}
}, 1);

timer.unref();

var checkInterval = 100;
var maxNbChecks = 5;
var nbChecks = 1;
setTimeout(function check() {
if (nbChecks >= maxNbChecks || nbIntervalFired == N) {
assert.strictEqual(nbIntervalFired, N);
return;
}
++nbChecks;
setTimeout(check, checkInterval);
}, checkInterval);