import { describe, it, expect } from 'vitest';
import numberLabel from '@/module/numberLabel.js';

describe('numberLabel', () => {
  it('formats small numbers without commas', () => {
    expect(numberLabel(1)).toBe('1');
    expect(numberLabel(999)).toBe('999');
  });

  it('formats thousands with commas', () => {
    expect(numberLabel(1000)).toBe('1,000');
    expect(numberLabel(12345)).toBe('12,345');
  });

  it('formats millions with commas', () => {
    expect(numberLabel(1234567)).toBe('1,234,567');
  });

  it('preserves decimal places', () => {
    expect(numberLabel(1234.56)).toBe('1,234.56');
  });

  it('handles zero', () => {
    expect(numberLabel(0)).toBe('0');
  });
});