chore: mac render tests

[felixpalmer]

Background

There are a number of tests that give slightly different results on mac. Currently this leads to the tests failing when run locally on mac, which makes it harder to develop. With this change all of the tests pass (Mac M3) when running yarn test browser

Change List

• Provide mechanism to override golden images per platform
• Add golden images for Mac

[coveralls]

coverage: 91.738% (-0.001%) from 91.739%
when pulling 516ef0d on felix/mac-render-tests
into 230104f on master.

[ibgreen]

This addresses one of the biggest inefficiences working with deck.gl, being that I have to rely on deck's CI during integration.

(Another issue is that deck's CI is quite slow relative to e.g. luma.gl etc and could stand to be optimized, but the urgency of that is significantly reduced by this change).

As minor nits:

• I would avoid capital case in file names. Either call toLowerCase on the OS constant, or update the constants to be lower case.
• I would add also string literal types to the OS constant.

let OS: 'mac' | 'windows' | 'unknown';

Additionally noting that it might be desirable to consolidate platform detection.

• We have platform detection in luma.gl's device.info that I have been using to disable some local tests when running under mac OS.
• We have similar platform detection in probe.gl

[Pessimistress]

Opportunity to enable TextLayer tests on CI?

deck.gl/test/render/test-cases/text-layer.js

Lines 47 to 49 in aa2537b

	export default OS === 'Mac'
	? [
	{

[felixpalmer]

Opportunity to enable TextLayer tests on CI?

deck.gl/test/render/test-cases/text-layer.js

Lines 47 to 49 in aa2537b

	export default OS === 'Mac'
	? [
	{

Good idea, but they need to be generated on Linux. Would you mind @Pessimistress ?

[felixpalmer]

Additionally noting that it might be desirable to consolidate platform detection.

Yes, it could be nice to move the override functionality into probe.gl as there we could check if the file existed prior to running the check