doc,test: test documentation consistency for NODE_OPTIONS #28179

richardlau · 2019-06-11T18:21:35Z

doc: add missing options allowed in NODE_OPTIONS
Add missing options to the list of allowed options for the
NODE_OPTIONS environment variable. Sort the list alphabetically.
doc,test: test documentation consistency for NODE_OPTIONS
Add a test that checks that the documented allowed options for the
NODE_OPTIONS environment variable are consistent with the actually
allowed options.

Checklist

make -j4 test (UNIX), or vcbuild test (Windows) passes
tests and/or benchmarks are included
documentation is changed or added
commit message follows commit guidelines

nodejs-github-bot · 2019-06-11T18:21:38Z

richardlau · 2019-06-11T18:26:32Z

This is a draft/wip because it currently (legitimately) fails:

-bash-4.2$ ./node test/parallel/test-process-env-allowed-flags-are-documented.js
assert.js:89
  throw new AssertionError(obj);
  ^

AssertionError [ERR_ASSERTION]: The following options are not documented as allowed in NODE_OPTIONS in /home/users/riclau/sandbox/github/nodejs/doc/api/cli.md: --tls-min-v1.2 --input-type --experimental-worker --tls-min-v1.3 --debug-arraybuffer-allocations --tls-max-v1.2 --experimental-policy --preserve-symlinks --http-parser --tls-min-v1.0 --es-module-specifier-resolution --preserve-symlinks-main --tls-max-v1.3 --tls-min-v1.1 --prof-process -r --debug-port
    at Object.<anonymous> (/home/users/riclau/sandbox/github/nodejs/test/parallel/test-process-env-allowed-flags-are-documented.js:35:8)
    at Module._compile (internal/modules/cjs/loader.js:777:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:788:10)
    at Module.load (internal/modules/cjs/loader.js:640:32)
    at Function.Module._load (internal/modules/cjs/loader.js:555:12)
    at Function.Module.runMain (internal/modules/cjs/loader.js:840:10)
    at internal/main/run_main_module.js:17:11 {
  generatedMessage: false,
  code: 'ERR_ASSERTION',
  actual: 17,
  expected: 0,
  operator: 'strictEqual'
}
-bash-4.2$

#28146 will fix the missing tls options. I'll add the other missing entries to the docs. If anyone sees anything in this list that shouldn't be there please say so.

doc/api/cli.md

Trott · 2019-06-12T04:58:17Z

test/parallel/test-process-env-allowed-flags-are-documented.js

+const docsDir = path.resolve(__dirname, '..', '..', 'doc');
+const cliMd = path.join(docsDir, 'api', 'cli.md');
+const cliDocs = fs.readFileSync(cliMd, { encoding: 'utf8' });
+const docRegExp = /^Node\.js options that are allowed are:$([^#]+)/m;


This seems brittle. A line-wrap change could break it. And I'll definitely break it when I inevitably decide to reduce passive voice from the doc. But I don't have a better idea, so...¯\(ツ)/¯ (FWIW, I'd prefer if the doc said something like "Valid options are:". But obviously that can and likely should be some other PR some time.)

FWIW if we change the line in doc/api/cli.md to Valid options are: the test fails:

-bash-4.2$ ./node test/parallel/test-process-env-allowed-flags-are-documented.js /home/users/riclau/sandbox/github/nodejs/test/parallel/test-process-env-allowed-flags-are-documented.js:17 const docOptions = cliDocs.match(docRegExp)[0]; ^ TypeError: Cannot read property '0' of null at Object.<anonymous> (/home/users/riclau/sandbox/github/nodejs/test/parallel/test-process-env-allowed-flags-are-documented.js:17:44) at Module._compile (internal/modules/cjs/loader.js:779:30) at Object.Module._extensions..js (internal/modules/cjs/loader.js:790:10) at Module.load (internal/modules/cjs/loader.js:642:32) at Function.Module._load (internal/modules/cjs/loader.js:555:12) at Function.Module.runMain (internal/modules/cjs/loader.js:842:10) at internal/main/run_main_module.js:17:11 -bash-4.2$

I'll see what we can do to make this better.

@Trott Changed this so that it now starts at the section header, which is less likely to change. PTAL.

(Test now still works when the prose is changed to "Valid options are:" but I'll let you make that change.)

Since HTML comments are valid Markdown, maybe we can delineate the list with a self-documenting HTML comment and use a RegExp to search for that? A suggestion, but totally not blocking this.

Added HTML comment markers. PTAL.

Of course now we have markers the follow on step would be to automatically update the list (since Node.js know which options are allowed in the environment and we've marked in the document where the lists should go). I'd prefer that to be a follow on PR 😁.

test/parallel/test-process-env-allowed-flags-are-documented.js

BridgeAR · 2019-06-12T17:36:15Z

One more thought: we might also validate the correct documentation order.

Add missing options to the list of allowed options for the `NODE_OPTIONS` environment variable. Sort the list alphabetically.

Add a test that checks that the documented allowed options for the `NODE_OPTIONS` environment variable are consistent with the actually allowed options.

richardlau · 2019-06-13T17:54:06Z

One more thought: we might also validate the correct documentation order.

Validate the options are sorted? Maybe as a follow up PR -- at the moment some options are listed with their aliases (e.g. --require, -r and --inspect-port, --debug-port) plus there are two lists (the Node.js options and V8 options) which means it's not quite as straightforward as it might seem at first.

@BridgeAR After changing the test and documentation to use markers to denote where to parse the options from the documentation this ended up being much easier so I've updated the test to check the options are alphabetically sorted.

richardlau · 2019-06-14T00:27:41Z

Resume CI: https://ci.nodejs.org/job/node-test-pull-request/23871/

jasnell · 2019-06-14T03:20:26Z

A lint rule might be better?

richardlau · 2019-06-14T03:40:23Z

A lint rule might be better?

The node binary running the linter may not be the same as the one corresponding to the source tree. However I won't stand in the way if anyone else wants to attempt this as a lint rule.

Trott · 2019-06-15T03:47:53Z

Landed in 3cdd5a2...5225586

Add missing options to the list of allowed options for the `NODE_OPTIONS` environment variable. Sort the list alphabetically. PR-URL: nodejs#28179 Reviewed-By: Rich Trott <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]> Reviewed-By: Colin Ihrig <[email protected]>

Add a test that checks that the documented allowed options for the `NODE_OPTIONS` environment variable are consistent with the actually allowed options. PR-URL: nodejs#28179 Reviewed-By: Rich Trott <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]> Reviewed-By: Colin Ihrig <[email protected]>

Add missing options to the list of allowed options for the `NODE_OPTIONS` environment variable. Sort the list alphabetically. PR-URL: #28179 Reviewed-By: Rich Trott <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]> Reviewed-By: Colin Ihrig <[email protected]>

Add a test that checks that the documented allowed options for the `NODE_OPTIONS` environment variable are consistent with the actually allowed options. PR-URL: #28179 Reviewed-By: Rich Trott <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]> Reviewed-By: Colin Ihrig <[email protected]>

Add missing options to the list of allowed options for the `NODE_OPTIONS` environment variable. Sort the list alphabetically. PR-URL: #28179 Reviewed-By: Rich Trott <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]> Reviewed-By: Colin Ihrig <[email protected]>

Add a test that checks that the documented allowed options for the `NODE_OPTIONS` environment variable are consistent with the actually allowed options. PR-URL: #28179 Reviewed-By: Rich Trott <[email protected]> Reviewed-By: Ruben Bridgewater <[email protected]> Reviewed-By: Colin Ihrig <[email protected]>

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doc: add missing options allowed in NODE_OPTIONS

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Add missing options to the list of allowed options for the `NODE_OPTIONS` environment variable. Sort the list alphabetically.

doc,test: test documentation consistency for NODE_OPTIONS

6bfc840

Add a test that checks that the documented allowed options for the `NODE_OPTIONS` environment variable are consistent with the actually allowed options.

richardlau force-pushed the docallowednodeoptions branch from 7b41260 to 6bfc840 Compare June 13, 2019 17:48

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doc,test: test documentation consistency for NODE_OPTIONS #28179

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