updux/dist/middleware.test.js

"use strict";

var _ = _interopRequireDefault(require("."));

var _updeep = _interopRequireDefault(require("updeep"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

test('simple effect', () => {
  const tracer = jest.fn();
  const store = (0, _.default)({
    effects: {
      foo: api => next => action => {
        tracer();
        next(action);
      }
    }
  }).createStore();
  expect(tracer).not.toHaveBeenCalled();
  store.dispatch({
    type: 'bar'
  });
  expect(tracer).not.toHaveBeenCalled();
  store.dispatch.foo();
  expect(tracer).toHaveBeenCalled();
});
test('effect and sub-effect', () => {
  const tracer = jest.fn();

  const tracerEffect = signature => api => next => action => {
    tracer(signature);
    next(action);
  };

  const store = (0, _.default)({
    effects: {
      foo: tracerEffect('root')
    },
    subduxes: {
      zzz: (0, _.default)({
        effects: {
          foo: tracerEffect('child')
        }
      })
    }
  }).createStore();
  expect(tracer).not.toHaveBeenCalled();
  store.dispatch({
    type: 'bar'
  });
  expect(tracer).not.toHaveBeenCalled();
  store.dispatch.foo();
  expect(tracer).toHaveBeenNthCalledWith(1, 'root');
  expect(tracer).toHaveBeenNthCalledWith(2, 'child');
});
test('"*" effect', () => {
  const tracer = jest.fn();
  const store = (0, _.default)({
    effects: {
      '*': api => next => action => {
        tracer();
        next(action);
      }
    }
  }).createStore();
  expect(tracer).not.toHaveBeenCalled();
  store.dispatch({
    type: 'bar'
  });
  expect(tracer).toHaveBeenCalled();
});
test('async effect', async () => {
  function timeout(ms) {
    return new Promise(resolve => setTimeout(resolve, ms));
  }

  const tracer = jest.fn();
  const store = (0, _.default)({
    effects: {
      foo: api => next => async action => {
        next(action);
        await timeout(1000);
        tracer();
      }
    }
  }).createStore();
  expect(tracer).not.toHaveBeenCalled();
  store.dispatch.foo();
  expect(tracer).not.toHaveBeenCalled();
  await timeout(1000);
  expect(tracer).toHaveBeenCalled();
});