* registry.el (registry-usage-test, registry-persistence-test): Move to
tests/gnustest-registry.el.
+ (registry-make-testable-db, registry-match-test)
+ (registry-instantiation-test): Move to tests/gnustest-registry.el.
* gnus-registry.el (gnus-registry-misc-test)
(gnus-registry-usage-test): Move to tests/gnustest-registry.el.