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8de2a3ee13
chore: move all the tests to the separate directory outside of sources; chore: remove jest.config.js (config moved to the package.json); test: unused import in test; test: 💍 fix tests add back x and y to useMeasure chore: 🤖 add linter to /tests folder ci: 🎡 limit Jest worker count for CircleCI
40 lines
1.3 KiB
TypeScript
40 lines
1.3 KiB
TypeScript
import { renderHook } from '@testing-library/react-hooks';
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import { useDeepCompareEffect } from '../src';
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import { useEffect } from 'react';
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let options = { max: 10 };
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const mockEffectNormal = jest.fn();
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const mockEffectDeep = jest.fn();
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const mockEffectCleanup = jest.fn();
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const mockEffectCallback = jest.fn().mockReturnValue(mockEffectCleanup);
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it('should run provided object once', () => {
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const { rerender: rerenderNormal } = renderHook(() => useEffect(mockEffectNormal, [options]));
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const { rerender: rerenderDeep } = renderHook(() => useDeepCompareEffect(mockEffectDeep, [options]));
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expect(mockEffectNormal).toHaveBeenCalledTimes(1);
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expect(mockEffectDeep).toHaveBeenCalledTimes(1);
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options = { max: 10 };
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rerenderDeep();
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rerenderNormal();
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expect(mockEffectNormal).toHaveBeenCalledTimes(2);
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expect(mockEffectDeep).toHaveBeenCalledTimes(1);
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options = { max: 10 };
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rerenderNormal();
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rerenderDeep();
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expect(mockEffectNormal).toHaveBeenCalledTimes(3);
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expect(mockEffectDeep).toHaveBeenCalledTimes(1);
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});
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it('should run clean-up provided on unmount', () => {
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const { unmount } = renderHook(() => useDeepCompareEffect(mockEffectCallback, [options]));
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expect(mockEffectCleanup).not.toHaveBeenCalled();
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unmount();
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expect(mockEffectCleanup).toHaveBeenCalledTimes(1);
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});
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