pdfkit/tests/unit/color.spec.js

import PDFDocument from '../../lib/document';
import { logData } from './helpers';

describe('color', function() {
  test('normalize', function() {
    const doc = new PDFDocument();

    expect(doc._normalizeColor('#FFF')).toEqual([1, 1, 1]);
    expect(doc._normalizeColor('#FFFFFF')).toEqual([1, 1, 1]);
    expect(doc._normalizeColor('#000')).toEqual([0, 0, 0]);
    expect(doc._normalizeColor('#000000')).toEqual([0, 0, 0]);
    expect(doc._normalizeColor('#6F6FEF')).toEqual([
      0.43529411764705883,
      0.43529411764705883,
      0.9372549019607843
    ]);

    expect(doc._normalizeColor([255, 255, 255])).toEqual([1, 1, 1]);
    expect(doc._normalizeColor([255, 255, 255, 255])).toEqual([
      2.55,
      2.55,
      2.55,
      2.55
    ]);
    expect(doc._normalizeColor([0, 0, 0])).toEqual([0, 0, 0]);
    expect(doc._normalizeColor([0, 0, 0, 0])).toEqual([0, 0, 0, 0]);
    expect(doc._normalizeColor([128, 10, 18])).toEqual([
      0.5019607843137255,
      0.0392156862745098,
      0.07058823529411765
    ]);
    expect(doc._normalizeColor([128, 10, 18, 100])).toEqual([
      1.28,
      0.1,
      0.18,
      1
    ]);
  });

  test('normalize with spot color', function() {
    const doc = new PDFDocument();
    doc.addSpotColor('PANTONE 123 C', 0.1, 0.2, 0.3, 0.4);

    const color = doc._normalizeColor('PANTONE 123 C');
    expect(color.id).toEqual('CS0');
    expect(color.values).toEqual([0.1, 0.2, 0.3, 0.4]);
  });

  test('spot color', function() {
      const doc = new PDFDocument();
      const data = logData(doc);
      doc.addSpotColor('PANTONE185C', 0, 100, 78, 9)
      doc.fillColor('PANTONE185C')
         .text('This text uses spot color!');
      doc.end();

      expect(data).toContainChunk([
          `6 0 obj`,
          '<<\n' +
          '/ProcSet [/PDF /Text /ImageB /ImageC /ImageI]\n' +
          '/ColorSpace <<\n' +
          '/CS0 8 0 R\n' +
          '>>\n' +
          '/Font <<\n' +
          '/F1 9 0 R\n' +
          '>>\n' +
          '>>',
      ]);
  });
});