(MAINT) Minimally Parallelize pester tests #1166
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To see the run times: https://github.com/PowerShell/DSC/actions/runs/18358507549 
This is a substantial improvement and shows that the majority of the remaining performance to squeeze from CI right now is parallelizing the windows tests for the |
Prior to this change, the pester tests made up the majority of the build time in CI. This change attempts to speed up the pester tests by parallelizing them roughly by folder: - The tests in the `dsc` folder run in their own cell. - The tests in the `adapters` folder run in their own cell. - The tests in the `extensions` folder run in their own cell. - The tests in the `resources` folder run in their own cell. This should substantially reduce the time spent on tests, particularly on Windows, where the CLI tests take much longer. This change makes minor changes to the new build script and helpers to support targeted test execution.
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SteveL-MSFT
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Oct 9, 2025
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PR Summary
Prior to this change, the pester tests made up the majority of the build time in CI. This change attempts to speed up the pester tests by parallelizing them roughly by folder:
dscfolder run in their own cell.adaptersfolder run in their own cell.extensionsfolder run in their own cell.resourcesfolder run in their own cell.This should substantially reduce the time spent on tests, particularly on Windows, where the CLI tests take much longer.
This change makes minor changes to the new build script and helpers to support targeted test execution.
PR Context
Depends on #1161