wp-media-rewind/tests/progress.test.ts

import { test } from "node:test";
import assert from "node:assert/strict";
import { ProgressBar } from "../src/utils/progress.js";

test("format reflects ticks", () => {
  const bar = new ProgressBar({ total: 4, width: 10, enabled: false });
  bar.tick("ok");
  bar.tick("skipped");
  const line = bar.format();
  assert.match(line, /50%/);
  assert.match(line, /2\/4/);
  assert.match(line, /ok:1/);
  assert.match(line, /skip:1/);
  assert.match(line, /fail:0/);
});

test("snapshot returns running totals", () => {
  const bar = new ProgressBar({ total: 3, enabled: false });
  bar.tick("ok");
  bar.tick("failed");
  assert.deepEqual(bar.snapshot(), { ok: 1, skipped: 0, failed: 1, done: 2 });
});

test("format reaches 100% on completion", () => {
  const bar = new ProgressBar({ total: 2, width: 4, enabled: false });
  bar.tick("ok");
  bar.tick("ok");
  assert.match(bar.format(), /100%/);
});

test("disabled bar does not write to stream", () => {
  let written = "";
  const fakeStream = {
    isTTY: false,
    write: (s: string) => {
      written += s;
      return true;
    },
  } as unknown as NodeJS.WriteStream;
  const bar = new ProgressBar({ total: 1, stream: fakeStream });
  bar.tick("ok");
  bar.finish();
  assert.equal(written, "");
});

test("enabled bar writes carriage-return updates", () => {
  let written = "";
  const fakeStream = {
    isTTY: true,
    write: (s: string) => {
      written += s;
      return true;
    },
  } as unknown as NodeJS.WriteStream;
  const bar = new ProgressBar({ total: 2, width: 4, stream: fakeStream });
  bar.tick("ok");
  bar.tick("ok");
  bar.finish();
  assert.ok(written.startsWith("\r"));
  assert.ok(written.endsWith("\n"));
  assert.match(written, /100%/);
});