test: add `--trace-gc` flag test by tony-go · Pull Request #42471 · nodejs/node

tony-go · 2022-03-25T22:45:48Z

Hi 👋

Context

This pull request follows this previous one and the initiative started by the diagnostic wg.

Added

Now that --trace-gc is a part of the diagnostic tooling support, I thought that we could improve maturity tiers by adding a simple high-level test. As --trace-gc is a part of the v8 codebase, it probably doesn't make sense to test specific cases here. I just tried to test the integration between node and v8.

I first tried to find where this integration was made, but I didn't find it. While I read the code I expected to find it somewhere around here:

node/src/node_options.cc

Line 238 in de163d5

StringVector* const v8_args,

If someone has an idea about where the integration is made, let me know ^^

How to run this test? -> make test-v8-updates

I wasn't sure about where should the test be or how I should write it, so I try to make it simple. 🙈

test/fixtures/gc.js

tony-go · 2022-03-26T05:43:44Z

cc @nodejs/diagnostics

RafaelGSS

LGTM.

lpinca

LGTM with or without the suggested nits fixed.

test/v8-updates/test-trace-gc-flag.js

nodejs-github-bot · 2022-03-28T03:51:47Z

CI: https://ci.nodejs.org/job/node-test-pull-request/43207/

Co-authored-by: Luigi Pinca <luigipinca@gmail.com>

targos · 2022-03-28T10:12:15Z

test/v8-updates/test-trace-gc-flag.js

+    const expectedRegex = new RegExp(expectedOutput[index]);
+    assert.match(line, expectedRegex);


Suggested change

const expectedRegex = new RegExp(expectedOutput[index]);

assert.match(line, expectedRegex);

assert.match(line, expectedOutput[index]);

expectedOutput already contains regexes.

In fact, I did like it first, then I got an error but I misread it.

I finally trim the output string and it worked ^^

Thanks a lot 🙏

nodejs-github-bot · 2022-03-28T11:16:33Z

CI: https://ci.nodejs.org/job/node-test-pull-request/43216/

nodejs-github-bot · 2022-03-28T20:15:10Z

Landed in 00cb091

PR-URL: #42471 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com> Reviewed-By: Darshan Sen <raisinten@gmail.com> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de>

PR-URL: nodejs#42471 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com> Reviewed-By: Darshan Sen <raisinten@gmail.com> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de>

PR-URL: #42471 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com> Reviewed-By: Darshan Sen <raisinten@gmail.com> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de>

PR-URL: nodejs#42471 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com> Reviewed-By: Darshan Sen <raisinten@gmail.com> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de>

PR-URL: #42471 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com> Reviewed-By: Darshan Sen <raisinten@gmail.com> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de>

PR-URL: nodejs/node#42471 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com> Reviewed-By: Darshan Sen <raisinten@gmail.com> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de>

test: add trace-gc flag test

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test: add line break in gc fixture

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CI Reliability 2022-03-27 nodejs/reliability#233

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CI Reliability 2022-03-28 nodejs/reliability#234

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tony-go and others added 2 commits March 28, 2022 08:55

doc: nitpick fix

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Co-authored-by: Luigi Pinca <luigipinca@gmail.com>

test: use assert.match instead of assert.ok

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targos reviewed Mar 28, 2022

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test: delete Regex call and trim string output

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nodejs-github-bot merged commit 00cb091 into nodejs:master Mar 28, 2022

This was referenced Apr 5, 2022

V17.8.1 proposal #42612

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v17.9.0 proposal #42613

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tony-go mentioned this pull request Apr 6, 2022

Re-evaluate --trace-gc in the tools tier-list nodejs/diagnostics#554

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tony-go mentioned this pull request May 5, 2022

doc: add diagnosis memory leak guide nodejs/nodejs.org#4590

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juanarbol mentioned this pull request May 31, 2022

2022-05-XX, Version 16.16.0 'Gallium' (LTS) #43268

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v16.17.0 release proposal #44098

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test: add `--trace-gc` flag test#42471

test: add `--trace-gc` flag test#42471
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tony-go:test_trace_gc_integration

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		const expectedRegex = new RegExp(expectedOutput[index]);
		assert.match(line, expectedRegex);

	const expectedRegex = new RegExp(expectedOutput[index]);
	assert.match(line, expectedRegex);
	assert.match(line, expectedOutput[index]);

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tony-go commented Mar 25, 2022 •

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