view tests/artifacts/PURPOSE @ 41109:3e1960e23e6b

delta: reuse _findsnapshot call from previous stage

Two different stage of the sparse-revlog logic needs the _findsnapshot data.
To avoid recomputing it twice, make it possible to reuse the first computation
in the second step.

example affected manifest write
before: 0.067141s
after:  0.064252s (-5%)

(total gain since start of series: 95%)

This directory is meant to cache artifacts useful for tests (such as bundle).

Those artifacts need to be cached because they are slow to regenerate on each
test but too large to be tracked within the repository. They are not expected
to change between each run and can be cached.

The `./scripts/` contains code to generate the artifact while the `cache`
directory contains resulting artifact.