jest-util 30.4.1: specialChars

Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify jest-util.specialChars in pkg:npm/jest-util@30.4.1
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/jest-util@30.4.1
Demonstrate these symbols/APIs:
  - jest-util.specialChars

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.

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import { specialChars } from 'jest-util';

export { specialChars };

export function formatStatusLine(status, message) {
  const icon = specialChars.ICONS[status] || specialChars.ARROW.trim();
  return `${icon} ${message}`;
}

export function formatStepProgress(step, status) {
  const icon = specialChars.ICONS[status] || '';
  return `${specialChars.ARROW.trim()} ${step}: ${icon}`;
}

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{
  "name": "sample-jest-util-special-chars",
  "version": "1.0.0",
  "description": "Clean-room verification sample for jest-util.specialChars",
  "type": "module",
  "main": "index.mjs",
  "scripts": {
    "test": "node test/contract.mjs"
  },
  "dependencies": {
    "jest-util": "30.4.1"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify jest-util.specialChars in pkg:npm/jest-util@30.4.1",
  "kind": "HOW",
  "packages": [
    "pkg:npm/jest-util@30.4.1"
  ],
  "symbols": [
    "jest-util.specialChars"
  ]
}

import assert from 'node:assert/strict';
import { specialChars } from 'jest-util';
import { formatStatusLine, formatStepProgress } from '../index.mjs';

// 1. specialChars exports ARROW delimiter string containing right-pointing chevron
{
  assert.equal(typeof specialChars.ARROW, 'string');
  assert.equal(specialChars.ARROW, ' \u203A ');
  assert.equal(specialChars.ARROW.trim(), '\u203A');
}

// 2. specialChars exports CLEAR terminal control sequence containing ANSI screen wipe codes
{
  assert.equal(typeof specialChars.CLEAR, 'string');
  assert.equal(specialChars.CLEAR, '\u001b[2J\u001b[3J\u001b[H');
  assert.ok(specialChars.CLEAR.includes('\u001b[2J'));
  assert.ok(specialChars.CLEAR.includes('\u001b[3J'));
  assert.ok(specialChars.CLEAR.includes('\u001b[H'));
}

// 3. specialChars exports ICONS dictionary containing success, failed, pending, and todo status glyphs
{
  assert.ok(typeof specialChars.ICONS === 'object' && specialChars.ICONS !== null);
  assert.equal(specialChars.ICONS.success, '✓');
  assert.equal(specialChars.ICONS.failed, '✕');
  assert.equal(specialChars.ICONS.pending, '○');
  assert.equal(specialChars.ICONS.todo, '✎');
  const expectedKeys = ['failed', 'pending', 'success', 'todo'];
  assert.deepEqual(Object.keys(specialChars.ICONS).sort(), expectedKeys);
}

// 4. formatStatusLine prefixes text with matching status icon or arrow fallback
{
  assert.equal(formatStatusLine('success', 'all tests passed'), '✓ all tests passed');
  assert.equal(formatStatusLine('failed', 'test failed'), '✕ test failed');
  assert.equal(formatStatusLine('pending', 'waiting for worker'), '○ waiting for worker');
  assert.equal(formatStatusLine('todo', 'write sample'), '✎ write sample');
  assert.equal(formatStatusLine('custom', 'step info'), '› step info');
}

// 5. formatStepProgress formats step name with arrow prefix and status icon
{
  assert.equal(formatStepProgress('compile', 'success'), '› compile: ✓');
  assert.equal(formatStepProgress('verify', 'failed'), '› verify: ✕');
}

console.log('All jest-util.specialChars contract assertions passed.');