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doc: add guidance on testing new errors #14207

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doc: add guidance on testing new errors #14207

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mhdawson
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Checklist
  • make -j4 test (UNIX), or vcbuild test (Windows) passes
  • documentation is changed or added
  • commit message follows commit guidelines
Affected core subsystem(s)

doc, errors

@nodejs-github-bot nodejs-github-bot added the doc Issues and PRs related to the documentations. label Jul 12, 2017
@mhdawson mhdawson requested a review from jasnell July 12, 2017 21:48
@mhdawson mhdawson mentioned this pull request Jul 12, 2017
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vsemozhetbyt
vsemozhetbyt reviewed Jul 12, 2017
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doc/guides/using-internal-errors.md Outdated
as we can trust the error helper implementation. An example of this kind of
error would be:

```
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nit: language labels (js) after code backticks.

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@vsemozhetbyt vsemozhetbyt Jul 12, 2017 •
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Linter errors when the language added:

   94:1  error  Expected indentation of 2 spaces but found 4  indent
   95:1  error  Expected indentation of 2 spaces but found 4  indent
  107:1  error  Expected indentation of 0 spaces but found 1  indent
  108:1  error  Expected indentation of 2 spaces but found 4  indent
  109:1  error  Expected indentation of 0 spaces but found 2  indent
  110:1  error  Expected indentation of 2 spaces but found 4  indent
  111:1  error  Expected indentation of 2 spaces but found 4  indent
  112:1  error  Expected indentation of 0 spaces but found 2  indent

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Thanks for catching that.

@vsemozhetbyt vsemozhetbyt added errors Issues and PRs related to JavaScript errors originated in Node.js core. test Issues and PRs related to the tests. labels Jul 12, 2017
refack
refack approved these changes Jul 12, 2017
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% lint

Trott
Trott reviewed Jul 13, 2017
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doc/guides/using-internal-errors.md Outdated
```

One final note is that it is bad practice to change the format of the message
after the error has been created and should avoided. If it does make sense
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should avoided -> should be avoided

Although I'd rewrite this entire sentence as:

Avoid changing the format of the message after the error has been created.

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Or even (if this is what is meant):

Avoid changing existing messages.

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Took first suggested alternative sentence.

cjihrig
cjihrig reviewed Jul 13, 2017
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doc/guides/using-internal-errors.md Outdated
E('ERR_SOCKET_ALREADY_BOUND', 'Socket is already bound');
```

If the error message is not a constant string then test(s) to validate
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Drop the parens in (s).

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done

doc/guides/using-internal-errors.md Outdated
If the error message is not a constant string then test(s) to validate
the formatting of the message based on the parameters used when
creating the error should be added to
`.../test/parallel/test-internal-errors.js`. These tests should validate
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Drop the .../

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done

doc/guides/using-internal-errors.md Outdated
creating the error should be added to
`.../test/parallel/test-internal-errors.js`. These tests should validate
all of the different ways parameters can be used to generate the final
message string. As simple example would be:
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As -> A
would be -> is

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done

@mhdawson
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@vsemozhetbyt @Trott @cjihrig pushed change to address comments.

@mhdawson mhdawson self-assigned this Jul 13, 2017
lpinca
lpinca reviewed Jul 13, 2017
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doc/guides/using-internal-errors.md Outdated
In addition, there should also be tests which validate the use of the
error based on where it is used in the codebase. For these tests, except in
special cases, they should only validate that the expected code is received
and NOT validate the massage. This will reduce the amount of test change
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s/massage/message/

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done

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CI run: https://ci.nodejs.org/job/node-test-pull-request/9118/

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Linter CI is green.

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refack commented Jul 14, 2017

mdlint is clean also:

D:\code\node-github-desktop\doc\guides$ node "D:\code\4node\mdlint\node_modules\remark-cli\cli.js" --rc-path "D:\code\4node\mdlint\remarkrc.txt" -f ./*.md
./backporting-to-release-lines.md: no issues found
./building-node-with-ninja.md: no issues found
./maintaining-V8.md: no issues found
./using-internal-errors.md: no issues found
./writing-and-running-benchmarks.md: no issues found
./writing-tests.md: no issues found

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CI was green, will land

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Landed as 9ab63d6

@mhdawson mhdawson closed this Jul 18, 2017
mhdawson added a commit that referenced this pull request Jul 18, 2017
@mhdawson
doc: add guidance on testing new errors
9ab63d6 
PR-URL: #14207
Reviewed-By: Refael Ackermann <[email protected]>
Reviewed-By: Vse Mozhet Byt <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: James M Snell <[email protected]>
@addaleax addaleax mentioned this pull request Jul 18, 2017
Merged
addaleax pushed a commit that referenced this pull request Jul 18, 2017
@mhdawson @addaleax
doc: add guidance on testing new errors
7a116d4 
PR-URL: #14207
Reviewed-By: Refael Ackermann <[email protected]>
Reviewed-By: Vse Mozhet Byt <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: James M Snell <[email protected]>
Fishrock123 pushed a commit that referenced this pull request Jul 19, 2017
@mhdawson @Fishrock123
doc: add guidance on testing new errors
48c6dbd 
PR-URL: #14207
Reviewed-By: Refael Ackermann <[email protected]>
Reviewed-By: Vse Mozhet Byt <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: James M Snell <[email protected]>
@mhdawson mhdawson deleted the errors-doc branch September 30, 2019 13:13
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@Trott Trott Trott left review comments

@vsemozhetbyt vsemozhetbyt vsemozhetbyt approved these changes

@cjihrig cjihrig cjihrig approved these changes

@lpinca lpinca lpinca approved these changes

@jasnell jasnell jasnell approved these changes

@refack refack refack approved these changes

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@mhdawson mhdawson

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@mhdawson @vsemozhetbyt @refack @jasnell @Trott @lpinca @cjihrig @MylesBorins @nodejs-github-bot