public void AliasSendsEvent()
{
client.Alias(User.WithKey("current"), User.Builder("previous").Anonymous(true).Build());
Assert.Equal(1, eventSink.Events.Count);
var e = Assert.IsType <AliasEvent>(eventSink.Events[0]);
Assert.Equal("current", e.CurrentKey);
Assert.Equal(ContextKind.User, e.CurrentKind);
Assert.Equal("previous", e.PreviousKey);
Assert.Equal(ContextKind.AnonymousUser, e.PreviousKind);
}
