describe('Operation Observer', () => {
  /**
   * Mock Public EventBus
   * Mock previous state in Document State Store
   *
   * Act - emulate Change Event at Public EventBus
   *
   * Expect - Private EventBus got correct operation
   */
  it('should create INSERT operation when it receives a change event after adding data', () => {
    console.log('todo');
  });

  it('should create DELETE operation when it receives a change event after removing data', () => {
    console.log('todo');
  });

  it('should create DELETE and INSERT operations when it receives a change event after replacing data', () => {
    console.log('todo');
  });

  it('should put new Document State to the store', () => {
    console.log('todo');
  });
});