packages/pass/store/optimistic/utils/split-history.spec.ts

   1 import type { WithOptimisticHistory } from '../types';
   2 import { isOptimisticHistoryItem } from './assertions';
   3 import { splitHistoryOnFirstOptimisticItem } from './split-history';
   4 import { createTestDeterministicAction, createTestOptimisticHistoryItem } from './testing.utils';
   5
   6 describe('splitHistoryOnFirstOptimisticItem', () => {
   7     test('should return empty right side if no optimistic actions in history', () => {
   8         const history = [createTestDeterministicAction()];
   9         const [left, right] = splitHistoryOnFirstOptimisticItem(history);
  10
  11         expect(right.length).toEqual(0);
  12         expect(left).toEqual(history);
  13     });
  14
  15     test('left side should only contain redux actions and no optimistic actions', () => {
  16         const history: WithOptimisticHistory = [
  17             createTestDeterministicAction(),
  18             createTestOptimisticHistoryItem(),
  19             createTestDeterministicAction(),
  20             createTestOptimisticHistoryItem(),
  21         ];
  22
  23         const [left, right] = splitHistoryOnFirstOptimisticItem(history);
  24
  25         expect(left.some(isOptimisticHistoryItem)).toBe(false);
  26         expect(left).toEqual(history.slice(0, 1));
  27         expect(right).toEqual(history.slice(1));
  28     });
  29 });