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While you’re writing your tests it can be helpful to see what the DOM looks like. You can do this with React Testing Library’s debug function which wi 阅读全文
posted @ 2020-04-30 17:50
Zhentiw
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Component: import React from 'react' function FavoriteNumber({ min = 1, max = 9 }) { const [number, setNumber] = React.useState(0) const [numberEntere 阅读全文
posted @ 2020-04-30 17:47
Zhentiw
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We can use 'jest.spyOn', similr to 'spyOn' in Jasmine. jest.spyOn(utils, 'getWinner') We get 'getWinner' as a method. Jest has mockImplementation: // 阅读全文
posted @ 2020-04-30 15:01
Zhentiw
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import { SET_STATUS, FETCH_FULFILLED, FETCH_FAILED, RESET, } from '../actions/beerActions' import lensProp from 'ramda/es/lensProp' import set from 'r 阅读全文
posted @ 2020-04-30 02:00
Zhentiw
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Epic: import { ofType } from 'redux-observable' import { of, concat, merge, fromEvent, race, forkJoin } from 'rxjs' const buildAPI = (apiBase, perPage 阅读全文
posted @ 2020-04-30 01:57
Zhentiw
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Let's say we are using 'React.lazy()' to lazy load some Router: const Home = React.lazy(() => import('./screens/home')) const User = React.lazy(() => 阅读全文
posted @ 2020-04-30 00:27
Zhentiw
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Our <Query /> component is a render prop based component that the <User /> component uses. But because it doesn't render anything, we can actually jus 阅读全文
posted @ 2020-04-30 00:15
Zhentiw
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