public void ChangeEmail()
{
var apiRepository = new ApiMongoRepository(CONNECTION_STRING);
var repository = new MongoRepository(CONNECTION_STRING,
apiRepository);
var userName = "******";
var secret = "test";
var manager = repository.CreateManager(userName, secret);
repository.ChangeEmail(manager.Id, secret, "*****@*****.**");
manager = repository.GetManager(manager.Id);
Assert.AreEqual(manager.UserName, "*****@*****.**");
repository.DeleteManager(manager.Id, secret);
}