SAK-28125

Add the unit tests for the encrypted session id feature.



git-svn-id: https://source.sakaiproject.org/svn/basiclti/trunk@315742 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-28125

Add more to the functionality testing.



git-svn-id: https://source.sakaiproject.org/svn/basiclti/trunk@315743 66ffb92e-73f9-0310-93c1-f5514f145a0a