@pdfme/pdf-lib/__tests__/utils/rng.spec.ts

Create and modify PDF files with JavaScript

import { SimpleRNG } from '../../src/utils/rng';

describe(`psuedo random numbers`, () => {
  it(`generates distinct numbers`, () => {
    const rng = SimpleRNG.withSeed(1);
    expect(rng.nextInt()).not.toEqual(rng.nextInt());
  });

  it(`generates the same number across different SimpleRNG`, () => {
    const rng = SimpleRNG.withSeed(1);
    expect(rng.nextInt()).toEqual(0.7098480789645691);
    expect(rng.nextInt()).toEqual(0.9742682568175951);
  });
});