[英]How to fix TypeError is not a function (testing promises with Jest)
I have a passing test now thanks to the answer here: How to test is chained promises in a jest test?由于这里的答案,我现在通过了测试: How to test is chained promises in a jest test?
However I'm still getting an error in the catch part of my test.但是,我在测试的 catch 部分仍然遇到错误。
I seem to not be able to correctly mock or spy this part in the actions file: .then(res => res.getIdToken())
我似乎无法在操作文件中正确模拟或监视此部分:
.then(res => res.getIdToken())
TEST signIn ERROR => TypeError: res.getIdToken is not a function
测试登录错误 => 类型错误:res.getIdToken 不是函数
jest.mock('services/firebase', () => new Promise(resolve => resolve({
signInWithEmailAndPassword: () => Promise.resolve({ getIdToken: 'abc123' }),
getIdToken: () => jest.fn(),
signOut: () => jest.fn()
})));
describe('login actions', () => {
let store;
beforeEach(() => {
store = mockStore({});
});
it('signIn should call firebase', () => {
const user = {
email: 'first.last@yum.com',
password: 'abd123'
};
return store.dispatch(signIn(user.email, user.password))
.then(() => {
console.log('TEST signIn SUCCESS');
expect(mockSignIn).toHaveBeenCalled();
expect(store.getActions()).toEqual({
type: USER_ON_LOGGED_IN
});
})
.catch((err) => {
console.log('TEST signIn ERROR =>', err);
});
});
// Sign in action
export const signIn = (email, password, redirectUrl = ROUTEPATH_DEFAULT_PAGE) => (dispatch) => {
dispatch({ type: USER_LOGIN_PENDING });
return firebase
.then((auth) => {
console.log('auth =>', auth);
return auth.signInWithEmailAndPassword(email, password);
})
.catch((e) => {
console.error('actions/Login/signIn', e);
// Register a new user
if (e.code === LOGIN_USER_NOT_FOUND) {
dispatch(push(ROUTEPATH_FORBIDDEN));
dispatch(toggleNotification(true, e.message, 'error'));
} else {
dispatch(displayError(true, e.message));
setTimeout(() => {
dispatch(displayError(false, ''));
}, 5000);
throw e;
}
})
// I can't seem to mock this correctly
.then(res => res.getIdToken())
.then((idToken) => {
if (!idToken) {
dispatch(displayError(true, 'Sorry, there was an issue with getting your token.'));
}
dispatch(onCheckAuth(email));
dispatch(push(redirectUrl));
});
};
It looks like the reason why you're getting this error has to do with the data you're mocking through Jest.看起来您收到此错误的原因与您通过 Jest 模拟的数据有关。
Try using jest.fn()
to mock your getIdToken
as a function, rather than a string:尝试使用
jest.fn()
将您的getIdToken
模拟为一个函数,而不是一个字符串:
const mockGetIdToken = jest.fn(() => 'abc123');
jest.mock('services/firebase', () => new Promise(resolve => resolve({
signInWithEmailAndPassword: () => Promise.resolve({ getIdToken: mockGetIdToken }),
getIdToken: mockGetIdToken,
signOut: () => jest.fn()
})));
describe('login actions', () => {
let store;
beforeEach(() => {
store = mockStore({});
});
it('signIn should call firebase', () => {
const user = {
email: 'first.last@yum.com',
password: 'abd123'
};
return store.dispatch(signIn(user.email, user.password))
.then(() => {
console.log('TEST signIn SUCCESS');
expect(mockSignIn).toHaveBeenCalled();
expect(store.getActions()).toEqual({
type: USER_ON_LOGGED_IN
});
})
.catch((err) => {
console.log('TEST signIn ERROR =>', err);
});
});
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.