test: skip setPriority test if insufficient permissions

[aduh95]

Fixes: NixOS/nixpkgs#355919

[LiviaMedeiros]

I'm not sure this is correct approach.

According to NixOS/nixpkgs#355919 (comment), the issue in NixOS happened without having a094a81? In this case, it would make sense to try cherry-picking a094a81 itself because it fixes EACCES (assuming niceness there works the same way as in Linux, and assuming it happened because the niceness in build system was set lower than 10; otherwise it looks like a bug to me).

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.41%. Comparing base (d9540b5) to head (f60cc58).
Report is 39 commits behind head on main.

Additional details and impacted files

@@ Coverage Diff @@## main #55863 +/- ##
==========================================
- Coverage 88.41% 88.41% -0.01% 
==========================================
Files 654 654 Lines 187811 187852 +41 Branches 36134 36130 -4 ==========================================
+ Hits 166059 166092 +33 - Misses 14992 15002 +10 + Partials 6760 6758 -2 

see 27 files with indirect coverage changes

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[JohnRTitor]

Works on NixOS

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/63559/

[aduh95]

@nodejs/fs can I get some reviews please?

[LiviaMedeiros]

Not blocking it as-is, since there are platforms that do not allow setting lower priority (which is IMHO a bug, i don't see why it should be restricted intentionally), and assuming unbreaking their build being urgent.
But if we ignore EACCES, it's better to remove this part of test completely, because it's already covered by test-os-process-priority.js.

[LiviaMedeiros]

Suggested change

	if(!common.isIBMi){
	const{PRIORITY_BELOW_NORMAL,PRIORITY_LOW}=os.constants.priority;
	constLOWER_PRIORITY=os.getPriority()>PRIORITY_BELOW_NORMAL ? PRIORITY_BELOW_NORMAL : PRIORITY_LOW;

[LiviaMedeiros]

Suggested change

	try{
	os.setPriority(LOWER_PRIORITY);
	constpriority=os.getPriority();
	is.number(priority);
	assert.strictEqual(priority,LOWER_PRIORITY);
	}catch(err){
	// The current user might not have sufficient permissions to set this
	// specific priority level.
	if(err?.info?.code!=='EACCES')throwerr;
	}
	}

[aduh95]

Superseded by #55908