markdown-converter/tests/print-preview.test.js

/**
 * @jest-environment jsdom
 */

/**
 * Tests for PrintPreview
 * Tests print dialog options, open/close, and preview rendering
 */

describe('PrintPreview', () => {
  beforeEach(() => {
    // Mock electron require for executePrint
    jest.mock(
      'electron',
      () => ({
        ipcRenderer: { send: jest.fn(), invoke: jest.fn() },
      }),
      { virtual: true }
    );

    document.body.innerHTML = `
            <div class="dialog-overlay hidden" id="print-preview-overlay">
                <button id="print-preview-close"></button>
                <button id="print-cancel"></button>
                <button id="print-execute"></button>
                <select id="print-paper-size"><option value="A4">A4</option><option value="Letter">Letter</option></select>
                <select id="print-orientation"><option value="portrait">Portrait</option><option value="landscape">Landscape</option></select>
                <select id="print-margins"><option value="default">Default</option></select>
                <input type="range" id="print-scale" value="100">
                <span id="print-scale-value">100%</span>
                <input type="checkbox" id="print-headers" checked>
                <input type="checkbox" id="print-background" checked>
                <select id="print-pages"><option value="all">All</option><option value="custom">Custom</option></select>
                <input type="text" id="print-page-range" class="hidden">
                <iframe id="print-preview-frame"></iframe>
            </div>
        `;
  });

  test('getOptions returns default values', () => {
    const { PrintPreview } = require('../src/print-preview');
    const preview = new PrintPreview();
    const options = preview.getOptions();
    expect(options.paperSize).toBe('A4');
    expect(options.orientation).toBe('portrait');
    expect(options.scale).toBe(100);
    expect(options.headers).toBe(true);
    expect(options.background).toBe(true);
    expect(options.pages).toBe('all');
    expect(options.margins).toBe('default');
    expect(options.pageRange).toBe('');
  });

  test('opens and closes', () => {
    const { PrintPreview } = require('../src/print-preview');
    const preview = new PrintPreview();
    preview.open('<p>Test</p>');
    expect(document.getElementById('print-preview-overlay').classList.contains('hidden')).toBe(
      false
    );
    preview.close();
    expect(document.getElementById('print-preview-overlay').classList.contains('hidden')).toBe(
      true
    );
  });

  test('updateScaleLabel reflects slider value', () => {
    const { PrintPreview } = require('../src/print-preview');
    const preview = new PrintPreview();
    document.getElementById('print-scale').value = '75';
    preview.updateScaleLabel();
    expect(document.getElementById('print-scale-value').textContent).toBe('75%');
  });

  test('close button closes preview', () => {
    const { PrintPreview } = require('../src/print-preview');
    const preview = new PrintPreview();
    preview.open('<p>Test</p>');
    document.getElementById('print-preview-close').click();
    expect(document.getElementById('print-preview-overlay').classList.contains('hidden')).toBe(
      true
    );
  });

  test('cancel button closes preview', () => {
    const { PrintPreview } = require('../src/print-preview');
    const preview = new PrintPreview();
    preview.open('<p>Test</p>');
    document.getElementById('print-cancel').click();
    expect(document.getElementById('print-preview-overlay').classList.contains('hidden')).toBe(
      true
    );
  });

  test('getOptions reflects changed values', () => {
    const { PrintPreview } = require('../src/print-preview');
    const preview = new PrintPreview();

    // Change paper size to Letter
    const paperSelect = document.getElementById('print-paper-size');
    paperSelect.value = 'Letter';

    // Change scale
    document.getElementById('print-scale').value = '50';

    // Uncheck headers
    document.getElementById('print-headers').checked = false;

    const options = preview.getOptions();
    expect(options.paperSize).toBe('Letter');
    expect(options.scale).toBe(50);
    expect(options.headers).toBe(false);
  });

  test('stores last content for refresh', () => {
    const { PrintPreview } = require('../src/print-preview');
    const preview = new PrintPreview();
    preview.open('<p>Hello World</p>');
    expect(preview._lastContent).toBe('<p>Hello World</p>');
  });
});