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test: improve check in test-os #14655

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test: improve check in test-os #14655

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Trott
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@Trott Trott commented Aug 7, 2017 •
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The check for os.networkInterfaces() in test-os.js may be too
strict. It's apparently possible for a machine to be configured with
multiple IPv4 loopback interfaces. Increase specificity of filter to
check on only the object we expect.

Fixes: #14654

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

test os

@Trott Trott added os Issues and PRs related to the os subsystem. test Issues and PRs related to the tests. labels Aug 7, 2017
@Trott Trott changed the title test: relax check in test-os test: improve check in test-os Aug 7, 2017
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Trott commented Aug 7, 2017

CI: https://ci.nodejs.org/job/node-test-pull-request/9513/

Florian-R
Florian-R reviewed Aug 7, 2017
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test/parallel/test-os.js Outdated
@@ -116,8 +116,8 @@ const interfaces = os.networkInterfaces();
switch (platform) {
case 'linux':
{
const filter = (e) => e.address === '127.0.0.1';
const actual = interfaces.lo.filter(filter);
const fltr = (e) => e.address === '127.0.0.1' && e.netmask === '255.0.0.0';
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Not a big deal but FWIW, the fltr const name is now inconsistent with the filter used in the win32 case

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Can you leave the name as filter and just break the line on the && operator.

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@cjihrig Sure, done.

cjihrig
cjihrig approved these changes Aug 7, 2017
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test/parallel/test-os.js Outdated
@@ -116,8 +116,8 @@ const interfaces = os.networkInterfaces();
switch (platform) {
case 'linux':
{
const filter = (e) => e.address === '127.0.0.1';
const actual = interfaces.lo.filter(filter);
const fltr = (e) => e.address === '127.0.0.1' && e.netmask === '255.0.0.0';
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Can you leave the name as filter and just break the line on the && operator.

@Trott
test: improve check in test-os
6071f05 
The check for `os.networkInterfaces()` in `test-os.js` may be too
strict. It's apparently possible for a machine to be configured with
multiple IPv4 loopback interfaces. Increase specificity of filter to
check on only the object we expect.

Fixes: nodejs#14654
refack
refack approved these changes Aug 7, 2017
View reviewed changes
test/parallel/test-os.js
@@ -116,7 +116,8 @@ const interfaces = os.networkInterfaces();
switch (platform) {
case 'linux':
{
const filter = (e) => e.address === '127.0.0.1';
const filter =
(e) => e.address === '127.0.0.1' && e.netmask === '255.0.0.0';
const actual = interfaces.lo.filter(filter);
const expected = [{ address: '127.0.0.1', netmask: '255.0.0.0',
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[warning 🚨 scope-creep]
AFAICT expected and the asserting could be hoisted, and switch replaced with if or trinary for selecting interfaces.lo / interfaces['Loopback Pseudo-Interface 1']

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Some reasons to maybe not do that:

  • If we want to add macOS to the switch statement (in another PR), it will have a different expected value. (The MAC address is different. Yes, the MAC address is different on Mac. Ha ha, ha ha, gosh, I'm funny.)

  • Probably don't want to replace the switch because we need a do-nothing default for macos, smartos... A switch makes sense here, I think. I mean, you can make it work with an if, of course. But I think this more verbose code is actually more readable even though it does violate DRY. (I often don't value DRY much in tests, TBH.)

Even if I'm wrong about that evaluation... must...resist....scope creep.

@Trott Trott mentioned this pull request Aug 8, 2017
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refack commented Aug 8, 2017

👍

(The MAC address is different. Yes, the MAC address is different on Mac. Ha ha, ha ha, gosh, I'm funny.)

Apple SMH...

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Trott commented Aug 10, 2017

Landed in 2923ed1

@Trott Trott closed this Aug 10, 2017
Trott added a commit to Trott/io.js that referenced this pull request Aug 10, 2017
@Trott
test: improve check in test-os
2923ed1 
The check for `os.networkInterfaces()` in `test-os.js` may be too
strict. It's apparently possible for a machine to be configured with
multiple IPv4 loopback interfaces. Increase specificity of filter to
check on only the object we expect.

PR-URL: nodejs#14655
Fixes: nodejs#14654
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
addaleax pushed a commit that referenced this pull request Aug 10, 2017
@Trott @addaleax
test: improve check in test-os
30837b3 
The check for `os.networkInterfaces()` in `test-os.js` may be too
strict. It's apparently possible for a machine to be configured with
multiple IPv4 loopback interfaces. Increase specificity of filter to
check on only the object we expect.

PR-URL: #14655
Fixes: #14654
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
@addaleax addaleax mentioned this pull request Aug 13, 2017
Merged
MylesBorins pushed a commit that referenced this pull request Sep 19, 2017
@Trott @MylesBorins
test: improve check in test-os
28b77d1 
The check for `os.networkInterfaces()` in `test-os.js` may be too
strict. It's apparently possible for a machine to be configured with
multiple IPv4 loopback interfaces. Increase specificity of filter to
check on only the object we expect.

PR-URL: #14655
Fixes: #14654
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
@MylesBorins MylesBorins mentioned this pull request Sep 20, 2017
Merged
@Trott Trott deleted the relax-os branch January 13, 2022 22:46
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@Florian-R Florian-R Florian-R left review comments

@tniessen tniessen tniessen 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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nodejs Makefile:196: recipe for target 'test' failed make: *** [test] Error 1
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