33 lines
881 B
JavaScript
33 lines
881 B
JavaScript
/**
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* A mock version of a commonUtils `backOff` to test multiple
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* retries.
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*
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* Usage:
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*
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* ```
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* import * as commonUtils from '~/lib/utils/common_utils';
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* import { backoffMockImplementation } from '../../helpers/backoff_helper';
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*
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* beforeEach(() => {
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* // ...
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* jest.spyOn(commonUtils, 'backOff').mockImplementation(backoffMockImplementation);
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* });
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* ```
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*
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* @param {Function} callback
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*/
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export const backoffMockImplementation = callback => {
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const q = new Promise((resolve, reject) => {
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const stop = arg => (arg instanceof Error ? reject(arg) : resolve(arg));
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const next = () => callback(next, stop);
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// Define a timeout based on a mock timer
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setTimeout(() => {
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callback(next, stop);
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});
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});
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// Run all resolved promises in chain
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jest.runOnlyPendingTimers();
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return q;
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};
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export default { backoffMockImplementation };
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