import test from "node:test";
import assert from "node:assert/strict";
import { buildCleanablePayload } from "./cleanable";

// The whole builder is a sum and a wrap, which is why it is here rather than in
// a route: the number in the widget's badge and the numbers in its list are now
// provably the same numbers.

test("bytes is the sum of the rows, and the rows pass through in order", () => {
  const payload = buildCleanablePayload([
    { slug: "big", count: 31, bytes: 3_000 },
    { slug: "small", count: 2, bytes: 500 },
  ]);
  assert.equal(payload.bytes, 3_500);
  assert.deepEqual(
    payload.channels.map((c) => c.slug),
    ["big", "small"],
  );
  assert.equal(payload.channels[0].count, 31);
});

test("no rows is zero bytes and an empty list, not a missing field", () => {
  assert.deepEqual(buildCleanablePayload([]), { bytes: 0, channels: [] });
});

test("the input array is not mutated or aliased", () => {
  const rows = [{ slug: "a", count: 1, bytes: 10 }];
  const payload = buildCleanablePayload(rows);
  assert.notEqual(payload.channels, rows);
  payload.channels.push({ slug: "b", count: 1, bytes: 1 });
  assert.equal(rows.length, 1);
});