/**
 * Unit Tests for XML Utilities
 * Tests XML escaping functionality
 */

import { test, describe } from 'node:test';
import assert from 'node:assert';
import { escapeXml } from '../../src/xml-utils.js';

describe('Unit: XML Escaping', () => {
  
  test('T045: Should escape ampersand (&)', () => {
    const input = 'Rock & Roll';
    const expected = 'Rock & Roll';
    assert.strictEqual(escapeXml(input), expected);
  });
  
  test('T045: Should escape less than (<)', () => {
    const input = '5 < 10';
    const expected = '5 &lt; 10';
    assert.strictEqual(escapeXml(input), expected);
  });
  
  test('T045: Should escape greater than (>)', () => {
    const input = '10 > 5';
    const expected = '10 &gt; 5';
    assert.strictEqual(escapeXml(input), expected);
  });
  
  test('T045: Should escape double quote (")', () => {
    const input = 'Say "Hello"';
    const expected = 'Say &quot;Hello&quot;';
    assert.strictEqual(escapeXml(input), expected);
  });
  
  test('T045: Should escape single quote (\')', () => {
    const input = "It's working";
    const expected = 'It&apos;s working';
    assert.strictEqual(escapeXml(input), expected);
  });
  
  test('T045: Should escape multiple special characters', () => {
    const input = '<tag attr="value">Content & stuff</tag>';
    const expected = '&lt;tag attr=&quot;value&quot;&gt;Content &amp; stuff&lt;/tag&gt;';
    assert.strictEqual(escapeXml(input), expected);
  });
  
  test('T045: Should handle empty string', () => {
    assert.strictEqual(escapeXml(''), '');
  });
  
  test('T045: Should handle non-string input', () => {
    assert.strictEqual(escapeXml(null), '');
    assert.strictEqual(escapeXml(undefined), '');
    assert.strictEqual(escapeXml(123), '');
  });
  
  test('T045: Should not modify safe strings', () => {
    const input = 'This is a safe string 123';
    assert.strictEqual(escapeXml(input), input);
  });
  
});