@pdfme/pdf-lib/__tests__/core/document/PDFTrailerDict.spec.ts

Create and modify PDF files with JavaScript

import { PDFContext, PDFTrailerDict } from '../../../src/core';
import { toCharCode, typedArrayFor } from '../../../src/utils';

describe(`PDFTrailerDict`, () => {
  const dict = PDFContext.create().obj({ Foo: 'Bar' });

  it(`can be constructed from PDFTrailerDict.of(...)`, () => {
    expect(PDFTrailerDict.of(dict)).toBeInstanceOf(PDFTrailerDict);
  });

  it(`can be converted to a string`, () => {
    expect(String(PDFTrailerDict.of(dict))).toBe('trailer\n<<\n/Foo /Bar\n>>');
  });

  it(`can provide its size in bytes`, () => {
    expect(PDFTrailerDict.of(dict).sizeInBytes()).toBe(23);
  });

  it(`can be serialized`, () => {
    const buffer = new Uint8Array(27).fill(toCharCode(' '));
    expect(PDFTrailerDict.of(dict).copyBytesInto(buffer, 3)).toBe(23);
    expect(buffer).toEqual(typedArrayFor('   trailer\n<<\n/Foo /Bar\n>> '));
  });
});