progress: support rendering trackers that haven't started yet

[NathanBaulch]

Proposed Changes

Support displaying trackers that haven't started yet.

I have a complex process that includes tasks that depend on the completion of other tasks. I'd like to display trackers for these deferred tasks without actually starting the clock or animating the indeterminate ones.

This PR has:

• no breaking changes
• no race conditions (AFAIK)
• full unit test coverage
• demo options to see it in action

[coveralls]

Pull Request Test Coverage Report for Build 5839435394

• 29 of 29 (100.0%) changed or added relevant lines in 3 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 5596256371:	0.0%
Covered Lines:	3318
Relevant Lines:	3318

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💛 - Coveralls

[jedib0t]

Thanks for the contribution. I should be able to merge within a day or two after you address the one comment.

Is it possible to share a demo gif of this in action?

[jedib0t]

Can you move it below the Message variable and add a comment on how this is used?

[NathanBaulch]

Done!

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[NathanBaulch]

Is it possible to share a demo gif of this in action?

I guess so, though it's pretty easy to see in action in demo-progress via the new -rnd-defer flag. This causes random tasks to sit dormant for 3 seconds before commencing.

[jedib0t]

Is it possible to share a demo gif of this in action?

I guess so, though it's pretty easy to see in action in demo-progress via the new -rnd-defer flag. This causes random tasks to sit dormant for 3 seconds before commencing.

Reason I asked was I'm doing this on mobile and won't have access to a computer for a couple of days. It's all right. I'll check before I merge then.

[NathanBaulch]

OK, I gave asciinema a try for the first time, pretty neat!
This shows the progress demo with each task randomly delayed by up to 3 seconds.
https://asciinema.org/a/UztgaKJ9Ld0GEa0TLflXPUTQa

[NathanBaulch]

You'll notice there's a brief period between starting a tracker and the first value increment that looks a little odd IMO.

This can be fixed relatively easily by adding a secondary timeStart sort in the renderer.

[NathanBaulch]

Ha, you merged it just minutes before I pushed a fix for the sorting suggestion above :)