test: fix timers-same-timeout-wrong-list-deleted #10362
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Trott
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test-timers-same-timeout-wrong-list-deleted was flaky under load because there is no guarantee that a timer will fire within a given period of time. It had an exit handler that checked that the process was finishing in less than twice as much as a timer was set for. Under load, the timer could take over 200ms to fire even if it was set for 100ms, so this was causing the test to be flaky on CI from time to time. However, that timing check is unnecessary to identify the regression that the test was written for. When run with a version of Node.js that does not contain the fix that accompanied the test in its initial commit, an assertion indicating that there were still timers in the active timer list fired. So, this commit removes the exit handler timing check and relies on the existing robust active timers list length check. This allows us to move the test back to parallel because it does not seem to fail under load anymore. The test was refactored slightly, removing duplicated code to a function, using `assert.strictEqual()` instead of `assert.equal()`, changing a 10ms timer to 1ms, and improving the messages provided by assertions. Fixes: nodejs#8459
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@nodejs/testing @erinspice |
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The version of the test run with Node v6.3.1 which does not have the fix (so the test should fail): $ node -v
v6.3.1
$ node test/parallel/test-timers-same-timeout-wrong-list-deleted.js
assert.js:89
throw new assert.AssertionError({
^
AssertionError: Timers remain.
at Immediate.<anonymous> (/Users/trott/io.js/test/parallel/test-timers-same-timeout-wrong-list-deleted.js:42:16)
at Immediate.<anonymous> (/Users/trott/io.js/test/common.js:419:15)
at runCallback (timers.js:570:20)
at tryOnImmediate (timers.js:550:5)
at processImmediate [as _immediateCallback] (timers.js:529:5)
$ |
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Once ubuntu1610-x64 is available to stress test jobs, it would be good to get a stress test of 9999 runs on that platform for this PR. EDIT: stress test |
Fishrock123
approved these changes
Dec 21, 2016
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CI had some issues yesterday that resulted in this CI job being lost. It was all green, I'm pretty sure, but let's do it again: CI: https://ci.nodejs.org/job/node-test-pull-request/5511/ |
jasnell
approved these changes
Dec 22, 2016
Trott
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Dec 23, 2016
test-timers-same-timeout-wrong-list-deleted was flaky under load because there is no guarantee that a timer will fire within a given period of time. It had an exit handler that checked that the process was finishing in less than twice as much as a timer was set for. Under load, the timer could take over 200ms to fire even if it was set for 100ms, so this was causing the test to be flaky on CI from time to time. However, that timing check is unnecessary to identify the regression that the test was written for. When run with a version of Node.js that does not contain the fix that accompanied the test in its initial commit, an assertion indicating that there were still timers in the active timer list fired. So, this commit removes the exit handler timing check and relies on the existing robust active timers list length check. This allows us to move the test back to parallel because it does not seem to fail under load anymore. The test was refactored slightly, removing duplicated code to a function, using `assert.strictEqual()` instead of `assert.equal()`, changing a 10ms timer to 1ms, and improving the messages provided by assertions. Fixes: nodejs#8459 PR-URL: nodejs#10362 Reviewed-By: Jeremiah Senkpiel <[email protected]> Reviewed-By: James M Snell <[email protected]>
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Landed in 4bdf494 |
evanlucas
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Jan 3, 2017
test-timers-same-timeout-wrong-list-deleted was flaky under load because there is no guarantee that a timer will fire within a given period of time. It had an exit handler that checked that the process was finishing in less than twice as much as a timer was set for. Under load, the timer could take over 200ms to fire even if it was set for 100ms, so this was causing the test to be flaky on CI from time to time. However, that timing check is unnecessary to identify the regression that the test was written for. When run with a version of Node.js that does not contain the fix that accompanied the test in its initial commit, an assertion indicating that there were still timers in the active timer list fired. So, this commit removes the exit handler timing check and relies on the existing robust active timers list length check. This allows us to move the test back to parallel because it does not seem to fail under load anymore. The test was refactored slightly, removing duplicated code to a function, using `assert.strictEqual()` instead of `assert.equal()`, changing a 10ms timer to 1ms, and improving the messages provided by assertions. Fixes: #8459 PR-URL: #10362 Reviewed-By: Jeremiah Senkpiel <[email protected]> Reviewed-By: James M Snell <[email protected]>
evanlucas
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Jan 4, 2017
test-timers-same-timeout-wrong-list-deleted was flaky under load because there is no guarantee that a timer will fire within a given period of time. It had an exit handler that checked that the process was finishing in less than twice as much as a timer was set for. Under load, the timer could take over 200ms to fire even if it was set for 100ms, so this was causing the test to be flaky on CI from time to time. However, that timing check is unnecessary to identify the regression that the test was written for. When run with a version of Node.js that does not contain the fix that accompanied the test in its initial commit, an assertion indicating that there were still timers in the active timer list fired. So, this commit removes the exit handler timing check and relies on the existing robust active timers list length check. This allows us to move the test back to parallel because it does not seem to fail under load anymore. The test was refactored slightly, removing duplicated code to a function, using `assert.strictEqual()` instead of `assert.equal()`, changing a 10ms timer to 1ms, and improving the messages provided by assertions. Fixes: #8459 PR-URL: #10362 Reviewed-By: Jeremiah Senkpiel <[email protected]> Reviewed-By: James M Snell <[email protected]>
MylesBorins
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Jan 23, 2017
test-timers-same-timeout-wrong-list-deleted was flaky under load because there is no guarantee that a timer will fire within a given period of time. It had an exit handler that checked that the process was finishing in less than twice as much as a timer was set for. Under load, the timer could take over 200ms to fire even if it was set for 100ms, so this was causing the test to be flaky on CI from time to time. However, that timing check is unnecessary to identify the regression that the test was written for. When run with a version of Node.js that does not contain the fix that accompanied the test in its initial commit, an assertion indicating that there were still timers in the active timer list fired. So, this commit removes the exit handler timing check and relies on the existing robust active timers list length check. This allows us to move the test back to parallel because it does not seem to fail under load anymore. The test was refactored slightly, removing duplicated code to a function, using `assert.strictEqual()` instead of `assert.equal()`, changing a 10ms timer to 1ms, and improving the messages provided by assertions. Fixes: #8459 PR-URL: #10362 Reviewed-By: Jeremiah Senkpiel <[email protected]> Reviewed-By: James M Snell <[email protected]>
MylesBorins
pushed a commit
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Jan 24, 2017
test-timers-same-timeout-wrong-list-deleted was flaky under load because there is no guarantee that a timer will fire within a given period of time. It had an exit handler that checked that the process was finishing in less than twice as much as a timer was set for. Under load, the timer could take over 200ms to fire even if it was set for 100ms, so this was causing the test to be flaky on CI from time to time. However, that timing check is unnecessary to identify the regression that the test was written for. When run with a version of Node.js that does not contain the fix that accompanied the test in its initial commit, an assertion indicating that there were still timers in the active timer list fired. So, this commit removes the exit handler timing check and relies on the existing robust active timers list length check. This allows us to move the test back to parallel because it does not seem to fail under load anymore. The test was refactored slightly, removing duplicated code to a function, using `assert.strictEqual()` instead of `assert.equal()`, changing a 10ms timer to 1ms, and improving the messages provided by assertions. Fixes: #8459 PR-URL: #10362 Reviewed-By: Jeremiah Senkpiel <[email protected]> Reviewed-By: James M Snell <[email protected]>
Merged
MylesBorins
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Jan 31, 2017
test-timers-same-timeout-wrong-list-deleted was flaky under load because there is no guarantee that a timer will fire within a given period of time. It had an exit handler that checked that the process was finishing in less than twice as much as a timer was set for. Under load, the timer could take over 200ms to fire even if it was set for 100ms, so this was causing the test to be flaky on CI from time to time. However, that timing check is unnecessary to identify the regression that the test was written for. When run with a version of Node.js that does not contain the fix that accompanied the test in its initial commit, an assertion indicating that there were still timers in the active timer list fired. So, this commit removes the exit handler timing check and relies on the existing robust active timers list length check. This allows us to move the test back to parallel because it does not seem to fail under load anymore. The test was refactored slightly, removing duplicated code to a function, using `assert.strictEqual()` instead of `assert.equal()`, changing a 10ms timer to 1ms, and improving the messages provided by assertions. Fixes: #8459 PR-URL: #10362 Reviewed-By: Jeremiah Senkpiel <[email protected]> Reviewed-By: James M Snell <[email protected]>
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Checklist
make -j4 test(UNIX), orvcbuild test(Windows) passesAffected core subsystem(s)
test timers
Description of change
test-timers-same-timeout-wrong-list-deleted was flaky under load because
there is no guarantee that a timer will fire within a given period of
time. It had an exit handler that checked that the process was finishing
in less than twice as much as a timer was set for. Under load, the
timer could take over 200ms to fire even if it was set for 100ms, so
this was causing the test to be flaky on CI from time to time.
However, that timing check is unnecessary to identify the regression
that the test was written for. When run with a version of Node.js that
does not contain the fix that accompanied the test in its initial
commit, an assertion indicating that there were still timers in the
active timer list fired. So, this commit removes the exit handler timing
check and relies on the existing robust active timers list length check.
This allows us to move the test back to parallel because it does not
seem to fail under load anymore.
The test was refactored slightly, removing duplicated code to a
function, using
assert.strictEqual()instead ofassert.equal(),changing a 10ms timer to 1ms, and improving the messages provided by
assertions.