easy-peasy/src/__tests__/actions.test.js

Vegetarian friendly state for React

import { action, createStore } from '../index';

test('deprecated action API does nothing', () => {
  // act
  const store = createStore({
    count: 1,
    increment: state => {
      state.count += 1;
    },
  });

  // assert
  expect(store.getActions().increment).toBeUndefined();
});

test('returning the state has no effect', () => {
  // arrange
  const store = createStore({
    count: 1,
    doNothing: action(state => state),
  });
  const prevState = store.getState();

  // act
  store.getActions().doNothing();

  // assert
  expect(store.getState()).toBe(prevState);
});