GetRoles() public method

public GetRoles ( ) : IEnumerable
return IEnumerable
        public void TestRemoveRole()
        {
            _authorizationService = new AbilityAuthorizationService(new UserRepository(), new RoleRepository(), new AbilityRepository());
            _authorizationService.AddRole(_role1);
            _authorizationService.AddRole(_role2);
            IEnumerable<IRole> roles = _authorizationService.GetRoles();
            Assert.AreEqual(2, roles.Count());
            Assert.AreEqual(_role1, roles.First());
            Assert.AreEqual(_role2, roles.Last());

            _authorizationService.RemoveRole("Role1");
            roles = _authorizationService.GetRoles();
            Assert.AreEqual(1, roles.Count());
            Assert.AreEqual(_role2, roles.First());
        }
        public void TestUpdateRole()
        {
            _authorizationService = new AbilityAuthorizationService(new UserRepository(), new RoleRepository(), new AbilityRepository());
            _authorizationService.AddRole(_role1);
            _authorizationService.AddRole(_role2);
            IEnumerable<IRole> roles = _authorizationService.GetRoles();
            Assert.AreEqual(2, roles.Count());
            Assert.AreEqual(_role1, roles.First());
            Assert.AreEqual(_role2, roles.Last());

            _role2.Name = "RoleUpdate";
            _authorizationService.UpdateRole(_role2);
            roles = _authorizationService.GetRoles();
            Assert.AreEqual(2, roles.Count());
            Assert.AreEqual(_role1, roles.First());
            Assert.AreEqual(_role2, roles.Last());
            Assert.AreEqual("RoleUpdate", roles.Last().Name);
        }
        public void TestRemoveAbilityAlsoRemovesFromRoles()
        {
            _authorizationService = new AbilityAuthorizationService(new UserRepository(), new RoleRepository(), new AbilityRepository());
            _role1.Abilities.Add(_ability1);
            _role1.Abilities.Add(_ability2);
            _authorizationService.AddRole(_role1);

            IEnumerable<IAbility> abilities = _authorizationService.GetAbilities();
            Assert.AreEqual(2, abilities.Count());
            Assert.AreEqual(_ability1, abilities.First());
            Assert.AreEqual(_ability2, abilities.Last());

            _authorizationService.RemoveAbility("Ability1");
            abilities = _authorizationService.GetAbilities();
            Assert.AreEqual(1, abilities.Count());
            Assert.AreEqual(_ability2, abilities.First());

            IEnumerable<IRole> roles = _authorizationService.GetRoles();
            Assert.AreEqual(1, roles.Count());
            Assert.AreEqual(1, roles.FirstOrDefault().Abilities.Count);
            Assert.AreEqual(_ability2, roles.FirstOrDefault().Abilities.FirstOrDefault());
        }