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--- | ||
"@nf-team/react": patch | ||
--- | ||
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test(@nf-team/react): useIsFirstRender, useUpdateEffect hook 테스트 추가 |
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import { act, renderHook } from '@testing-library/react'; | ||
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import useIsFirstRender from './useIsFirstRender'; | ||
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describe('useIsFirstRender', () => { | ||
const useIsFirstRenderHook = () => renderHook(useIsFirstRender); | ||
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context('첫 렌더링인 경우', () => { | ||
it('true를 반환해야만 한다', () => { | ||
const { result } = useIsFirstRenderHook(); | ||
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expect(result.current).toBe(true); | ||
}); | ||
}); | ||
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context('첫 렌더링이 아닌 경우', () => { | ||
it('false를 반환해야만 한다', () => { | ||
const { result, rerender } = useIsFirstRenderHook(); | ||
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act(() => { | ||
rerender(); | ||
}); | ||
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expect(result.current).toBe(false); | ||
}); | ||
}); | ||
}); |
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import { renderHook } from '@testing-library/react'; | ||
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import useIsFirstRender from './useIsFirstRender'; | ||
import useUpdateEffect from './useUpdateEffect'; | ||
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jest.mock('./useIsFirstRender'); | ||
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describe('useUpdateEffect', () => { | ||
const effectCallback = jest.fn(); | ||
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beforeEach(() => { | ||
(useIsFirstRender as jest.Mock).mockImplementation(() => given.isFirstRender); | ||
jest.clearAllMocks(); | ||
}); | ||
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const useUpdateEffectHook = () => renderHook(() => useUpdateEffect(effectCallback, [])); | ||
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context('첫 랜더링인 경우', () => { | ||
given('isFirstRender', () => true); | ||
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it('effect callback 함수는 호출되지 않아만한다', () => { | ||
useUpdateEffectHook(); | ||
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expect(effectCallback).not.toHaveBeenCalled(); | ||
}); | ||
}); | ||
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context('첫 렌더링이 아닌 경우', () => { | ||
given('isFirstRender', () => false); | ||
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it('첫 랜더링이 아닌 경우 effect callback 함수는 호출되어야만 한다', () => { | ||
useUpdateEffectHook(); | ||
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expect(effectCallback).toHaveBeenCalledTimes(1); | ||
}); | ||
}); | ||
}); |