{
createMembership(userName, groupName1, membershipType);
assertEquals("We expect to find single membership for user " + userName, 1,
mHandler.findMembershipsByUser(userName).size());
MembershipType mt = mtHandler.removeMembershipType("type", true);
assertEquals(mt.getName(), membershipType);
assertNull(mtHandler.findMembershipType("type"));
assertEquals("We expect to find no membership for user " + userName, 0, mHandler.findMembershipsByUser(userName)
.size());
// try to remove not existed membership type. We are supposed to get "null" instead of Exception