Fix tests

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | 
| License       | MIT
| Doc PR        | n/a

This fixes the testsuite in master.
For the Redis storage, the test failure seems to come from a bad resolution when merging 2.1 into master.