Quotes.spec.js

import quotes from './Quotes';

describe('Quotes reducer', () => {
  it('returns proper initial state', () => {
    expect(quotes(undefined, {})).toEqual([]);
  });

  it('adds the quotes', () => {
    expect(quotes(['sample quote 1'], {
      type: 'FETCH_QUOTES_SUCCESS',
      data: ['sample quote 2', 'sample quote 3'],
    })).toEqual([
      'sample quote 1',
      'sample quote 2',
      'sample quote 3',
    ]);
  });

  it('returns same state for unknown action', () => {
    expect(quotes(
      ['sample quote 1'],
      { type: 'UNKNOWN_ACTION' }
    )).toEqual(['sample quote 1']);
  })
});