iterates/lib/utils.test.js

Iterator and AsyncIterator helper functions with typings

import * as sync from './sync.js';
import { pipeValue } from './utils.js';
describe('utils', () => {
  describe('pipeValue', () => {
    it('should call all the functions in order', () => {
      const result = pipeValue([1, 2, 3], sync.map(item => sync.range({
        start: 0,
        end: item
      })), sync.map(sync.asArray), sync.enumerate, sync.collect(({
        index,
        item
      }) => [index, item]));
      expect(result).toEqual(new Map([[0, [0]], [1, [0, 1]], [2, [0, 1, 2]]]));
    });
  });
});