add failing test for runtime errors config
only require digests when raise_runtime_errors = true
Revert "turn digests on by default"

This reverts commit 1c9eda5a53f5ba4da0356d9ebadc43ddbc25ba8a.
Revert "add digests to helper tests"

This reverts commit 6e3d9d70a91efce77592d0e503e7ac5eabe1c69b.