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https://github.com/streamich/react-use.git
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30abe2b22e
feat(useFirstMountState): hook to track if render is first; feat(useRendersCount): hook to track renders count; refactor(useUpdateEffect): now uses useFirstMountState hook; refactor(usePreviousDistinct): now uses with useFirstMountState hook; docs: update readme;
23 lines
643 B
TypeScript
23 lines
643 B
TypeScript
import { renderHook } from '@testing-library/react-hooks';
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import { useRendersCount } from '../src';
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describe('useRendersCount', () => {
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it('should be defined', () => {
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expect(useRendersCount).toBeDefined();
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});
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it('should return number', () => {
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expect(renderHook(() => useRendersCount()).result.current).toEqual(expect.any(Number));
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});
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it('should return actual number of renders', () => {
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const hook = renderHook(() => useRendersCount());
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expect(hook.result.current).toBe(1);
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hook.rerender();
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expect(hook.result.current).toBe(2);
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hook.rerender();
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expect(hook.result.current).toBe(3);
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});
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});
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