Svelte Testing Crash Course - part 15

store.spec.js

it('should set info coming from endpoint', async () => {
  const commit = jest.fn();
  jest.spyOn(axios, 'post').mockImplementation(() => ({
    body: 'Modified by post'
  }));

  const { store, onModify } = createStore();
  let info;
  store.subscribe(value => info = value);
  await onModify('Modified by click');

  expect(info).toEqual('Modified by post');
});