als-statistics/tests/utils/html-table.test.js

Modular JS statistics toolkit for Node.js and the browser: descriptive stats, correlations (Pearson/Spearman/Kendall), t-tests & ANOVA (Student/Welch), reliability (Cronbach’s alpha), regression (linear/logistic), clustering (DBSCAN/HDBSCAN), and table/co

import { describe, it } from 'node:test';
import assert from 'node:assert';
import { htmlTable } from '../../lib/utils/html-table.js';

// Утилита: схлопываем пробелы и переносы между тегами,
// чтобы сравнивать именно разметку, а не форматирование.
function normalize(html) {
  return String(html)
    .replace(/\s+/g, ' ')
    .replace(/>\s+</g, '><')
    .trim();
}

describe('htmlTable (simple string comparison)', () => {
  it('renders with headers (default options)', () => {
    const cols = [
      [1, 1.2, 1.23],
      [2, 2.5, 2.51],
    ];
    const headers = ['H1', 'H2', 'H3'];

    const actual = htmlTable(cols, headers);
    const expected = `
<div>
      
      
      <table style="text-align:left;border: 1px solid black; padding:5px;"><thead>
      <tr><th>H1</th><th>H2</th><th>H3</th></tr>
   </thead><tbody>
   <tr>
      <th>1</th><td>1.2</td><td>1.2</td>
   </tr><tr>
      <th>2</th><td>2.5</td><td>2.5</td>
   </tr>
   </tbody></table>
   </div>`.trim();

    assert.strictEqual(normalize(actual), normalize(expected));
  });

  it('renders without <thead> when headers are empty', () => {
    const cols = [
      [1, 10.7],
      [2, 20.2],
    ];
    const headers = [];

    const actual = htmlTable(cols, headers);
    const expected = `
<div>
      
      
      <table style="text-align:left;border: 1px solid black; padding:5px;"><tbody>
   <tr>
      <th>1</th><td>10.7</td>
   </tr><tr>
      <th>2</th><td>20.2</td>
   </tr>
   </tbody></table>
   </div>`.trim();

    assert.strictEqual(normalize(actual), normalize(expected));
  });

  it('uses <td> for first column when firstColHeader = false', () => {
    const cols = [
      [1, 1.2],
      [2, 2.5],
    ];
    const headers = ['A', 'B'];

    const actual = htmlTable(cols, headers, { firstColHeader: false });
    const expected = `
<div>
      
      
      <table style="text-align:left;border: 1px solid black; padding:5px;"><thead>
      <tr><th>A</th><th>B</th></tr>
   </thead><tbody>
   <tr>
      <td>1</td><td>1.2</td>
   </tr><tr>
      <td>2</td><td>2.5</td>
   </tr>
   </tbody></table>
   </div>`.trim();

    assert.strictEqual(normalize(actual), normalize(expected));
  });

  it('renders header and description, and applies custom style', () => {
    const cols = [
      [10, 0, 0.00056], // 0.00056 -> "0.0006" по твоей round
    ];
    const headers = []; // без thead
    const options = {
      header: 'My Title',
      description: 'My Description',
      style: 'border:1px solid;',
    };

    const actual = htmlTable(cols, headers, options);
    const expected = `
<div>
      <h3>My Title</h3>
      <p>My Description</p>
      <table style="border:1px solid;"><tbody>
   <tr>
      <th>10</th><td>0</td><td>0.0006</td>
   </tr>
   </tbody></table>
   </div>`.trim();

    assert.strictEqual(normalize(actual), normalize(expected));
  });

  it('respects fixed option (caps precision)', () => {
    const cols = [
      [1, 0.00056], // при fixed=3 -> "0.001"
    ];
    const headers = ['H1', 'H2'];

    const actual = htmlTable(cols, headers, { fixed: 3 });
    const expected = `
<div>
      
      
      <table style="text-align:left;border: 1px solid black; padding:5px;"><thead>
      <tr><th>H1</th><th>H2</th></tr>
   </thead><tbody>
   <tr>
      <th>1</th><td>0.001</td>
   </tr>
   </tbody></table>
   </div>`.trim();

    assert.strictEqual(normalize(actual), normalize(expected));
  });

  it('handles zeros/null/undefined as 0 via round', () => {
    const cols = [
      [1, 0, null, undefined],
    ];
    const headers = ['C1', 'C2', 'C3', 'C4'];

    const actual = htmlTable(cols, headers);
    const expected = `
<div>
      
      
      <table style="text-align:left;border: 1px solid black; padding:5px;"><thead>
      <tr><th>C1</th><th>C2</th><th>C3</th><th>C4</th></tr>
   </thead><tbody>
   <tr>
      <th>1</th><td>0</td><td>0</td><td>0</td>
   </tr>
   </tbody></table>
   </div>`.trim();

    assert.strictEqual(normalize(actual), normalize(expected));
  });
});