090 rings basic

// Test: std/rings - MPMC ring buffer with identity branches
// This test imports the actual std/rings library

~import std/rings
~import std/io

const std = @import("std");

// Use the ring type from std/rings (internal Zig naming convention)
const Ring = koru_std.koru_rings.MpmcRing(u64, 16);
var ring = Ring.init();

// Test enqueue/dequeue with identity branches
~std/rings:enqueue(ring: &ring, value: 42)
| ok |> std/rings:enqueue(ring: &ring, value: 100)
    | ok |> std/rings:dequeue(ring: &ring)
        | some v |> std/io:print.ln("First: {{ v:d }}")
        | none |> std/io:print.ln("ERROR: empty")
    | full |> std/io:print.ln("ERROR: full")
| full |> std/io:print.ln("ERROR: full")