public void GetUsersTest()
        {
            var loyalty = new LoyaltyManager(_context);

            var users = loyalty.EnumerateUsers();

            Assert.AreEqual(0, users.Count());

            loyalty.CreateUser("George", "Washington", "*****@*****.**");

            users = loyalty.EnumerateUsers();
            Assert.AreEqual(1, users.Count());
        }
 public IActionResult GetUsers()
 {
     return(Ok(_database
               .EnumerateUsers()
               .Select(u => new
     {
         Id = u.UserId,
         u.Email,
         u.FirstName,
         u.LastName,
         u.Points
     })));
 }