test: fix hijackStdout behavior in console #14647

XadillaX · 2017-08-06T06:18:44Z

console.log and some other function will swallow the exception in stdout.write. So an asynchronous exception is needed, or common.hijackStdout won't detect some exception.

Refs: https://github.com/nodejs/node/blob/v8.2.1/lib/console.js#L87

Checklist

make -j4 test
tests and/or benchmarks are included
commit message follows commit guidelines

Affected core subsystem(s)

test

`console.log` and some other function will swallow the exception in `stdout.write`. So an asynchronous exception is needed, or `common.hijackStdout` won't detect some exception. Refs: https://github.com/nodejs/node/blob/v8.2.1/lib/console.js#L87

XadillaX · 2017-08-07T04:48:13Z

/cc @nodejs/testing

refack

1 CR
2 nits

refack · 2017-08-09T02:00:20Z

test/common/index.js

+    try {
+      listener(data);
+    } catch(e) {
+      process.nextTick(function() {


Nit: I know you like functions but this could be a single line.
IMHO the indentation is weird

refack · 2017-08-09T02:02:14Z

test/parallel/test-common.js

+});
+
+let uncaughtTimes = 0;
+process.on('uncaughtException', common.mustCallAtLeast(function(e) {


CR: How is the mustCallAtLeast fit with the ${([ 'err', 'out' ])[uncaughtTimes++]} trick?

The second parameter of common.mustCallAtLeast is 2.

Sorry I wasn't clear. I meant it should be mustCall, as any more calls would generate console undefined error

refack · 2017-08-09T02:04:59Z

test/parallel/test-common.js

+
+// hijackStderr and hijackStdout again
+// for console
+[ 'err', 'out' ].forEach((txt) => {


Optional: do [['err', 'error'], ['out', 'log']].forEach(([ext, method]) => {
instead of console[txt === 'err' ? 'error' : 'log']('test');

XadillaX · 2017-08-11T02:31:48Z

@refack updated.

refack

LGTM. Just need to replace mustCallAtLeast with mustCall

refack · 2017-08-11T02:45:38Z

test/parallel/test-common.js

+});
+
+let uncaughtTimes = 0;
+process.on('uncaughtException', common.mustCallAtLeast(function(e) {


Sorry I wasn't clear. I meant it should be mustCall, as any more calls would generate console undefined error

XadillaX · 2017-08-11T06:17:45Z

@refack How about now? I've added the code:

assert.strictEqual(uncaughtTimes < 2, true);

refack · 2017-08-11T11:17:10Z

@refack How about now? I've added the code:

assert.strictEqual(uncaughtTimes < 2, true);

That works too.

CI: https://ci.nodejs.org/job/node-test-pull-request/9617/

jasnell · 2017-08-29T05:23:44Z

New CI: https://ci.nodejs.org/job/node-test-pull-request/9863/

jasnell · 2017-08-29T17:05:02Z

Trying again on windows https://ci.nodejs.org/job/node-test-commit-windows-fanned/11379/

`console.log` and some other function will swallow the exception in `stdout.write`. So an asynchronous exception is needed, or `common.hijackStdout` won't detect some exception. Refs: https://github.com/nodejs/node/blob/v8.2.1/lib/console.js#L87 PR-URL: #14647 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Refael Ackermann <refack@gmail.com> Reviewed-By: Yuta Hiroto <hello@about-hiroppy.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>

jasnell · 2017-08-29T18:00:47Z

Landed in 1ffd01c

`console.log` and some other function will swallow the exception in `stdout.write`. So an asynchronous exception is needed, or `common.hijackStdout` won't detect some exception. Refs: https://github.com/nodejs/node/blob/v8.2.1/lib/console.js#L87 PR-URL: nodejs/node#14647 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Refael Ackermann <refack@gmail.com> Reviewed-By: Yuta Hiroto <hello@about-hiroppy.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>

`console.log` and some other function will swallow the exception in `stdout.write`. So an asynchronous exception is needed, or `common.hijackStdout` won't detect some exception. Refs: https://github.com/nodejs/node/blob/v8.2.1/lib/console.js#L87 PR-URL: nodejs#14647 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Refael Ackermann <refack@gmail.com> Reviewed-By: Yuta Hiroto <hello@about-hiroppy.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>

`console.log` and some other function will swallow the exception in `stdout.write`. So an asynchronous exception is needed, or `common.hijackStdout` won't detect some exception. Refs: https://github.com/nodejs/node/blob/v8.2.1/lib/console.js#L87 PR-URL: #14647 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Refael Ackermann <refack@gmail.com> Reviewed-By: Yuta Hiroto <hello@about-hiroppy.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>

MylesBorins · 2017-09-20T19:08:47Z

it looks like this is a patch to test features that don't exist on v6.x

Should we backport them?

MylesBorins · 2017-10-16T22:10:07Z

ping

MylesBorins · 2017-11-14T20:19:38Z

ping @XadillaX

nodejs-github-bot added the test Issues and PRs related to the tests. label Aug 6, 2017

XadillaX force-pushed the test-improve-hijack-std branch from d3d6dba to c45e347 Compare August 6, 2017 06:21

XadillaX requested a review from joyeecheung August 6, 2017 06:22

jasnell approved these changes Aug 8, 2017

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refack suggested changes Aug 9, 2017

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update after reviewing

9dbe31b

refack approved these changes Aug 11, 2017

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hiroppy approved these changes Aug 27, 2017

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BridgeAR approved these changes Aug 27, 2017

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joyeecheung approved these changes Aug 29, 2017

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jasnell closed this Aug 29, 2017

MylesBorins mentioned this pull request Sep 10, 2017

v8.5.0 proposal #15308

Merged

MylesBorins added the lts-watch-v6.x label Sep 20, 2017

MylesBorins added dont-land-on-v6.x and removed lts-watch-v6.x labels Dec 19, 2017

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test: fix hijackStdout behavior in console #14647

test: fix hijackStdout behavior in console #14647

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XadillaX commented Aug 6, 2017 •

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