Responsibility of Testing Schemes regarding quarantine

[DavidKerkmann]

To be allowed to enter a (new) location, ALL testing schemes have to allow a person to go there. Since quarantine is handled by the MigrationRules, if you would call run_strategy twice, and there is no testing scheme with minimal time = 0, then it could actually change the result from the first call. Calling it twice in a row thus has to be avoided. Right now, this is fine since run_strategy is only ever called once for each location (where quarantine has already be checked for in the MigrationRules).

[DavidKerkmann]

To add something to the discussion: In general, it is a good that the testing schemes are not responsible for the quarantine checks but only for testing and evaluating testing results. Thus, it could be enough to update the description of the return type of run_scheme to account for this fact.