weiser-leaders-quotes/index.test.js

A package that returns a random quote from w(e)ise world leaders.

// index.test.js
const WorldLeaderQuotes = require('./index');

describe('WorldLeaderQuotes', () => {
  let quoteGenerator;

  beforeEach(() => {
    quoteGenerator = new WorldLeaderQuotes();
  });

  describe('getRandomQuote', () => {
    test('should return a quote object with required properties', () => {
      const quote = quoteGenerator.getRandomQuote();
      
      expect(quote).toHaveProperty('quote');
      expect(quote).toHaveProperty('author');
      expect(quote).toHaveProperty('country');
      expect(quote).toHaveProperty('category');
    });

    test('should return different quotes on multiple calls', () => {
      // Due to randomness, this test might occasionally fail
      // We'll call it multiple times to reduce the probability
      const quotes = new Set();
      for (let i = 0; i < 10; i++) {
        quotes.add(JSON.stringify(quoteGenerator.getRandomQuote()));
      }
      // With our small dataset, we expect at least 2 different quotes
      expect(quotes.size).toBeGreaterThan(1);
    });
  });

  describe('getQuoteByAuthor', () => {
    test('should return quotes by Gandhi when searching for "Gandhi"', () => {
      const quotes = quoteGenerator.getQuoteByAuthor('Gandhi');
      
      expect(quotes).toHaveLength(1);
      expect(quotes[0].author).toBe('Mahatma Gandhi');
    });

    test('should be case insensitive', () => {
      const quotes = quoteGenerator.getQuoteByAuthor('gandhi');
      
      expect(quotes).toHaveLength(1);
      expect(quotes[0].author).toBe('Mahatma Gandhi');
    });

    test('should return empty array for non-existent author', () => {
      const quotes = quoteGenerator.getQuoteByAuthor('Non Existent');
      
      expect(quotes).toHaveLength(0);
    });
  });
});