public void AddRole()
{
Guid roleId = Guid.NewGuid();
const string roleName = "users";
sut.AddRole(roleId, roleName, description, groupName);
sut.SaveChanges();
using (DbContext readContext = new DbContext())
{
Role role = readContext.Roles.Single();
Assert.AreEqual(roleId, role.Id);
Assert.AreEqual(roleName, role.Name);
Assert.AreEqual(groupName, role.ExternalGroupName);
}
}