add test for get_router; use assert_equals
add test for get_router; use assert_equals

peterayeni/rapidsms,catalpainternational/rapidsms,ehealthafrica-ci/rapidsms,lsgunth/rapidsms,ehealthafrica-ci/rapidsms,catalpainternational/rapidsms,peterayeni/rapidsms,ehealthafrica-ci/rapidsms,eHealthAfrica/rapidsms,eHealthAfrica/rapidsms,caktus/rapidsms,lsgunth/rapidsms,caktus/rapidsms,peterayeni/rapidsms,caktus/rapidsms,lsgunth/rapidsms,eHealthAfrica/rapidsms,peterayeni/rapidsms,catalpainternational/rapidsms,lsgunth/rapidsms,catalpainternational/rapidsms