@technobuddha/library/src/dice-coefficient.test.ts

A large library of useful functions

import { diceCoefficient } from './dice-coefficient.ts';

describe('diceCoefficient', () => {
  test('Detect difference between two strings', () => {
    expect(diceCoefficient('Drink Coca Cola', 'Drink Pepsi Cola')).toBeCloseTo(0.6206896551724138);
  });

  test('Handle short strings', () => {
    expect(diceCoefficient('D', 'D')).toBe(1);
    expect(diceCoefficient('D', 'X')).toBe(0);
    expect(diceCoefficient('', 'X')).toBe(0);
    expect(diceCoefficient('', '')).toBe(1);
  });

  test('Accept case insensitive option', () => {
    expect(
      diceCoefficient('Drink Coca Cola', 'DRINK PEPSI COLA', { caseInsensitive: true }),
    ).toBeCloseTo(0.6206896551724138);
    expect(diceCoefficient('D', 'd', { caseInsensitive: true })).toBe(1);
  });
});