React Jest creating error "new Error('...')" exit and fail testing immediately

I'm new to Jest and React and is setting up Jest unit test for the React web project and encounter this problem when I'm trying to do it on async dispatch. Whenever there is a new Error(...), the test case just exits and fails when execute that line. (It starts with the test case run to jest-jasmine2 module where it has a new Error in execution. Then I try new Error in my test case directly and it fails too...). When npm start, nothing wrong happen, but only when npm test, this happens.

./__TEST__/action.test.js

import * as actions from '../actions';
import configureMockStore from 'redux-mock-store'
import thunk from 'redux-thunk'

const middlewares = [ thunk ];
const mockStore = configureMockStore(middlewares);


describe('signIn dispatch action',()=>{
let store
beforeEach(()=>{
    store = mockStore({})
    window.fetch =jest.fn()
})
it('successful2 login', async ()=>{
    const response = '{...}'
    window.fetch.mockImplementationOnce (
        () => Promise.resolve({json: () => Promise.resolve(JSON.parse(response))})
    );
    await store.dispatch(actions.signIn({email:"a@a.com",password:"123"}))
})

it('fail login', () => {

    window.fetch =jest.fn()
    const error = new Error("blahblahblah")
    window.fetch.mockImplementationOnce(
        () => Promise.reject(error)
    );
    return store.dispatch(actions.signIn({email: "", password: ""}, onSuccess))
        .then(() => {
        })
})
})

npm test output

● signIn dispatch action › successful2 login

Failed: [object Object]

  at stackFormatter (node_modules/jest-jasmine2/build/expectationResultFactory.js:30:20)
  at process._tickCallback (internal/process/next_tick.js:109:7)

● signIn dispatch action › fail login

blahblahblah

  at Object.it (src/actions/__test__/actions.test.js:117:23)
  at Promise.resolve.then.el (node_modules/p-map/index.js:42:16)
  at process._tickCallback (internal/process/next_tick.js:109:7)

package.json

"devDependencies": {
"babel-jest": "^20.0.3",
"babel-plugin-transform-es2015-modules-commonjs": "^6.24.1",
"babel-preset-es2015": "^6.24.1",
"babel-preset-react": "^6.24.1",
"babel-preset-stage-0": "^6.24.1",
"babel-preset-stage-2": "^6.24.1",
"enzyme": "^2.9.1",
"enzyme-to-json": "^1.5.1",
"jest": "^20.0.4",
"jest-immutable-matchers": "^1.5.0",
"react-addons-test-utils": "^15.6.0",
"react-dom": "^15.6.1",
"react-scripts": "^1.0.10",
"react-test-renderer": "^15.6.1",
"redux-devtools": "^3.3.1",
"redux-devtools-dock-monitor": "^1.1.1",
"redux-devtools-log-monitor": "^1.1.1",
"redux-mock-store": "^1.2.3"
},

.babelrc

{
"presets":["react","es2015","stage-0","stage-2"]
}