@technobuddha/library/src/readability.test.ts

A large library of useful functions

import { readability } from './readability.ts';

describe('readability', () => {
  test('returns high score for very simple text', () => {
    const text = 'See Spot run. Run, Spot, run!';
    expect(readability(text)).toBeCloseTo(119.19);
  });

  test('returns lower score for complex text', () => {
    const text =
      'The philosophical implications of quantum mechanics are profound, challenging our understanding of reality itself.';
    expect(readability(text)).toBeCloseTo(-6.789);
  });

  test('returns middle score for simple text', () => {
    const text = 'This is a sentence. Here is another one.';
    expect(readability(text)).toBeCloseTo(65.3);
  });

  test('handles single sentence', () => {
    const text = 'The quick brown fox jumps over the lazy dog.';
    expect(readability(text)).toBeCloseTo(94.3);
  });

  test('handles single word', () => {
    const text = 'Hello';
    expect(readability(text)).toBeCloseTo(36.62);
  });

  test('handles empty string', () => {
    const text = '';
    expect(readability(text)).toBeNaN();
  });

  test('handles text with no punctuation', () => {
    const text = 'This is a test with no punctuation and several words';
    expect(readability(text)).toBeCloseTo(78.245);
  });

  test('handles text with many short sentences', () => {
    const text = 'Go. Stop. Run. Jump. Eat. Sleep.';
    expect(readability(text)).toBeCloseTo(121.22);
  });

  test('handles text with long sentences', () => {
    const text =
      'Despite the rain, the children, who had been waiting all week for the festival, decided to go outside and enjoy the festivities, which included games, food, and music.';
    expect(readability(text)).toBeCloseTo(51.514);
  });
});