testing a Promise.all returned from dispatched action with jest and enzyme












1















I've got a quite problem with understanding how to test an async action creator.
Action is fetching data to github api which is taking user information and also fetching his repositories i put them into Promise.all() to resolve them as 1 promise and I didn't see any clues to test it right way to mock fetchData



here is action:



import fetch from 'isomorphic-fetch';
import apikey from '../../apikey';
import {
fetchUserBegin,
fetchUserInfoSucces,
fetchUserError,
fetchUserReposSuccess,
fetchUserLoadingEnd,
} from './index';

const apkey = process.env.NODE_ENV === 'production' ? '' : apikey;

export function fetchData(url) {
return (
fetch(url)
.then(result => result.json())
);
}


export default function takeUserNameAndFetchData(name) {
const userInfoUrl = `https://api.github.com/users/${name}${apkey}`;
const userRepoUrl = `https://api.github.com/users/${name}/repos${apkey}`;

return (dispatch) => {
dispatch(fetchUserBegin());
return Promise.all([
fetchData(userInfoUrl),
fetchData(userRepoUrl),
])
.then(([info, repos]) => {
console.log(info, repos);
dispatch(fetchUserInfoSucces(info));
dispatch(fetchUserReposSuccess(repos));
dispatch(fetchUserLoadingEnd());
})
.catch((err) => {
dispatch(fetchUserError(err));
});
};
}


and here is my test:



import configureMockStore from 'redux-mock-store';
import thunk from 'redux-thunk';
import fetchMock from 'fetch-mock';
import * as types from '../../src/actions/types';
import takeUserNameAndFetchData from '../../src/actions/fetchData';

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

describe('testing fetchData actions', () => {
afterEach(() => {
fetchMock.restore();
});
test('should pass user name and fetch data', () => {
fetchMock.getOnce('*', {
body: [
{ userInfo: {} },
{ userRepos: },
],
});

const expectedActions = [
{ type: types.FETCH_USER_BEGIN },
{ type: types.FETCH_USER_INFO_SUCCESS, payload: { body: { userInfo: {} } } },
{ type: types.FETCH_USER_REPOS_SUCCESS, payload: { body: { userRepos: } } },
{ type: types.FETCH_USER_LOADING_END },
];
const store = mockStore({ userInfo: {}, userRepos: });
return store.dispatch(takeUserNameAndFetchData())
.then(() => {
const actualActions = store.getActions().map(action => action.type);
expect(actualActions).toEqual(expectedActions);
});
});
});


I am really confused about to test it right way with jest/enzyme.










share|improve this question

























  • well I replaced fetch with axios and I made an global mock of axios it is much easier than mocking globally fetch

    – Michał Lutecki
    Nov 21 '18 at 21:29
















1















I've got a quite problem with understanding how to test an async action creator.
Action is fetching data to github api which is taking user information and also fetching his repositories i put them into Promise.all() to resolve them as 1 promise and I didn't see any clues to test it right way to mock fetchData



here is action:



import fetch from 'isomorphic-fetch';
import apikey from '../../apikey';
import {
fetchUserBegin,
fetchUserInfoSucces,
fetchUserError,
fetchUserReposSuccess,
fetchUserLoadingEnd,
} from './index';

const apkey = process.env.NODE_ENV === 'production' ? '' : apikey;

export function fetchData(url) {
return (
fetch(url)
.then(result => result.json())
);
}


export default function takeUserNameAndFetchData(name) {
const userInfoUrl = `https://api.github.com/users/${name}${apkey}`;
const userRepoUrl = `https://api.github.com/users/${name}/repos${apkey}`;

return (dispatch) => {
dispatch(fetchUserBegin());
return Promise.all([
fetchData(userInfoUrl),
fetchData(userRepoUrl),
])
.then(([info, repos]) => {
console.log(info, repos);
dispatch(fetchUserInfoSucces(info));
dispatch(fetchUserReposSuccess(repos));
dispatch(fetchUserLoadingEnd());
})
.catch((err) => {
dispatch(fetchUserError(err));
});
};
}


and here is my test:



import configureMockStore from 'redux-mock-store';
import thunk from 'redux-thunk';
import fetchMock from 'fetch-mock';
import * as types from '../../src/actions/types';
import takeUserNameAndFetchData from '../../src/actions/fetchData';

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

describe('testing fetchData actions', () => {
afterEach(() => {
fetchMock.restore();
});
test('should pass user name and fetch data', () => {
fetchMock.getOnce('*', {
body: [
{ userInfo: {} },
{ userRepos: },
],
});

const expectedActions = [
{ type: types.FETCH_USER_BEGIN },
{ type: types.FETCH_USER_INFO_SUCCESS, payload: { body: { userInfo: {} } } },
{ type: types.FETCH_USER_REPOS_SUCCESS, payload: { body: { userRepos: } } },
{ type: types.FETCH_USER_LOADING_END },
];
const store = mockStore({ userInfo: {}, userRepos: });
return store.dispatch(takeUserNameAndFetchData())
.then(() => {
const actualActions = store.getActions().map(action => action.type);
expect(actualActions).toEqual(expectedActions);
});
});
});


I am really confused about to test it right way with jest/enzyme.










share|improve this question

























  • well I replaced fetch with axios and I made an global mock of axios it is much easier than mocking globally fetch

    – Michał Lutecki
    Nov 21 '18 at 21:29














1












1








1








I've got a quite problem with understanding how to test an async action creator.
Action is fetching data to github api which is taking user information and also fetching his repositories i put them into Promise.all() to resolve them as 1 promise and I didn't see any clues to test it right way to mock fetchData



here is action:



import fetch from 'isomorphic-fetch';
import apikey from '../../apikey';
import {
fetchUserBegin,
fetchUserInfoSucces,
fetchUserError,
fetchUserReposSuccess,
fetchUserLoadingEnd,
} from './index';

const apkey = process.env.NODE_ENV === 'production' ? '' : apikey;

export function fetchData(url) {
return (
fetch(url)
.then(result => result.json())
);
}


export default function takeUserNameAndFetchData(name) {
const userInfoUrl = `https://api.github.com/users/${name}${apkey}`;
const userRepoUrl = `https://api.github.com/users/${name}/repos${apkey}`;

return (dispatch) => {
dispatch(fetchUserBegin());
return Promise.all([
fetchData(userInfoUrl),
fetchData(userRepoUrl),
])
.then(([info, repos]) => {
console.log(info, repos);
dispatch(fetchUserInfoSucces(info));
dispatch(fetchUserReposSuccess(repos));
dispatch(fetchUserLoadingEnd());
})
.catch((err) => {
dispatch(fetchUserError(err));
});
};
}


and here is my test:



import configureMockStore from 'redux-mock-store';
import thunk from 'redux-thunk';
import fetchMock from 'fetch-mock';
import * as types from '../../src/actions/types';
import takeUserNameAndFetchData from '../../src/actions/fetchData';

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

describe('testing fetchData actions', () => {
afterEach(() => {
fetchMock.restore();
});
test('should pass user name and fetch data', () => {
fetchMock.getOnce('*', {
body: [
{ userInfo: {} },
{ userRepos: },
],
});

const expectedActions = [
{ type: types.FETCH_USER_BEGIN },
{ type: types.FETCH_USER_INFO_SUCCESS, payload: { body: { userInfo: {} } } },
{ type: types.FETCH_USER_REPOS_SUCCESS, payload: { body: { userRepos: } } },
{ type: types.FETCH_USER_LOADING_END },
];
const store = mockStore({ userInfo: {}, userRepos: });
return store.dispatch(takeUserNameAndFetchData())
.then(() => {
const actualActions = store.getActions().map(action => action.type);
expect(actualActions).toEqual(expectedActions);
});
});
});


I am really confused about to test it right way with jest/enzyme.










share|improve this question
















I've got a quite problem with understanding how to test an async action creator.
Action is fetching data to github api which is taking user information and also fetching his repositories i put them into Promise.all() to resolve them as 1 promise and I didn't see any clues to test it right way to mock fetchData



here is action:



import fetch from 'isomorphic-fetch';
import apikey from '../../apikey';
import {
fetchUserBegin,
fetchUserInfoSucces,
fetchUserError,
fetchUserReposSuccess,
fetchUserLoadingEnd,
} from './index';

const apkey = process.env.NODE_ENV === 'production' ? '' : apikey;

export function fetchData(url) {
return (
fetch(url)
.then(result => result.json())
);
}


export default function takeUserNameAndFetchData(name) {
const userInfoUrl = `https://api.github.com/users/${name}${apkey}`;
const userRepoUrl = `https://api.github.com/users/${name}/repos${apkey}`;

return (dispatch) => {
dispatch(fetchUserBegin());
return Promise.all([
fetchData(userInfoUrl),
fetchData(userRepoUrl),
])
.then(([info, repos]) => {
console.log(info, repos);
dispatch(fetchUserInfoSucces(info));
dispatch(fetchUserReposSuccess(repos));
dispatch(fetchUserLoadingEnd());
})
.catch((err) => {
dispatch(fetchUserError(err));
});
};
}


and here is my test:



import configureMockStore from 'redux-mock-store';
import thunk from 'redux-thunk';
import fetchMock from 'fetch-mock';
import * as types from '../../src/actions/types';
import takeUserNameAndFetchData from '../../src/actions/fetchData';

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

describe('testing fetchData actions', () => {
afterEach(() => {
fetchMock.restore();
});
test('should pass user name and fetch data', () => {
fetchMock.getOnce('*', {
body: [
{ userInfo: {} },
{ userRepos: },
],
});

const expectedActions = [
{ type: types.FETCH_USER_BEGIN },
{ type: types.FETCH_USER_INFO_SUCCESS, payload: { body: { userInfo: {} } } },
{ type: types.FETCH_USER_REPOS_SUCCESS, payload: { body: { userRepos: } } },
{ type: types.FETCH_USER_LOADING_END },
];
const store = mockStore({ userInfo: {}, userRepos: });
return store.dispatch(takeUserNameAndFetchData())
.then(() => {
const actualActions = store.getActions().map(action => action.type);
expect(actualActions).toEqual(expectedActions);
});
});
});


I am really confused about to test it right way with jest/enzyme.







redux jestjs enzyme redux-thunk






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 21 '18 at 16:10









skyboyer

3,66111129




3,66111129










asked Nov 21 '18 at 10:11









Michał LuteckiMichał Lutecki

62




62













  • well I replaced fetch with axios and I made an global mock of axios it is much easier than mocking globally fetch

    – Michał Lutecki
    Nov 21 '18 at 21:29



















  • well I replaced fetch with axios and I made an global mock of axios it is much easier than mocking globally fetch

    – Michał Lutecki
    Nov 21 '18 at 21:29

















well I replaced fetch with axios and I made an global mock of axios it is much easier than mocking globally fetch

– Michał Lutecki
Nov 21 '18 at 21:29





well I replaced fetch with axios and I made an global mock of axios it is much easier than mocking globally fetch

– Michał Lutecki
Nov 21 '18 at 21:29












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