Methods all, find and exists? for range entity

Missing acceptance test
Signed-off By: Guilherme Rojas V. de Lima <guilhermehrojas@gmail.com>
Accepctance test for all method of Range entity

Signed-off By: Renan Fichberg <rfichberg@gmail.com>
Acceptance test for range entity

Signed-of By: Renan Fichberg <rfichberg@gmail.com>