Runners prepared with their random seed. If runners are invalid for some reason (duplicate name, ...), this is will be an Err String. Otherwise, the type tells us if Test.only or Test.skip was used, and provides the seeded runners in an array for efficient indexed access.

Informs us if Test.only or Test.skip was used.

Create an empty SeededRunners when there isn't any test

Convert a "master" test into seeded runners. That "master" test usually is the concatenation of all exposed tests.

Run a given test if the id is in range.

Parse a kind from a String.

Serialize a kind to a String.