Also, thanks a lot! Love the project!

More than happy to submit a PR if this is interesting

from knapsack.

Hi @prostko

Sounds like an interesting idea.

If you would like to work on this you can take a look at
Knapsack::Distributors::ReportDistributor takes care of sorting test files with known time execution (test files in JSON report).
https://github.com/ArturT/knapsack/blob/387181ed7a459557770514c676771eff27dc3e1f/lib/knapsack/allocator.rb#L8
https://github.com/ArturT/knapsack/blob/387181ed7a459557770514c676771eff27dc3e1f/lib/knapsack/distributors/report_distributor.rb#L3

Knapsack::Distributors::LeftoverDistributor takes care of test files with unknown time execution (for instance someone added a new test file and it is not yet in JSON report - this file is called leftover).

List of test files for a given node index from ReportDistributor + LeftoverDistributor are passed to RSpec as allocator.stringify_node_tests
https://github.com/ArturT/knapsack/blob/387181ed7a459557770514c676771eff27dc3e1f/lib/knapsack/runners/rspec_runner.rb#L15 (it looks similar for other runners like cucumber, minitest, etc)

dynamic tests split

A bit similar idea to Least Connections Algorithm you can find in Knapsack Pro Queue Mode that will dynamically split tests between parallel nodes. This way you solve problems when nodes start at a different times or test files have random execution time.

You can check this article https://docs.knapsackpro.com/2020/how-to-speed-up-ruby-and-javascript-tests-with-ci-parallelisation

from knapsack.

I'm closing this issue because #99 was merged.

from knapsack.