Flesh out the team stream filters test
Flesh out the team stream filters test

This will make it cleaner to add the watermarks (see #3130).

tejasbubane/exercism.io,treiff/exercism.io,nathanbwright/exercism.io,RaptorRCX/exercism.io,jtigger/exercism.io,jtigger/exercism.io,mhelmetag/exercism.io,mhelmetag/exercism.io,nathanbwright/exercism.io,tejasbubane/exercism.io,mhelmetag/exercism.io,treiff/exercism.io,RaptorRCX/exercism.io,nathanbwright/exercism.io,jtigger/exercism.io,RaptorRCX/exercism.io,mhelmetag/exercism.io,RaptorRCX/exercism.io,treiff/exercism.io,jtigger/exercism.io,nathanbwright/exercism.io,treiff/exercism.io,tejasbubane/exercism.io,tejasbubane/exercism.io