23 lines
905 B
JavaScript
23 lines
905 B
JavaScript
// `lodash/debounce` has a non-trivial implementation which can lead to
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// [flaky spec errors][1]. This mock simply makes `debounce` calls synchronous.
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//
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// In the future we could enhance this by injecting some test values in
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// the function passed to it. See [this issue][2] for more information.
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//
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// [1]: https://gitlab.com/gitlab-org/gitlab/-/issues/212532
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// [2]: https://gitlab.com/gitlab-org/gitlab/-/issues/213378
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// Further reference: https://github.com/facebook/jest/issues/3465
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export default fn => {
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const debouncedFn = jest.fn().mockImplementation(fn);
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debouncedFn.cancel = jest.fn();
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debouncedFn.flush = jest.fn().mockImplementation(() => {
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const errorMessage =
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"The .flush() method returned by lodash.debounce is not yet implemented/mocked by the mock in 'spec/frontend/__mocks__/lodash/debounce.js'.";
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throw new Error(errorMessage);
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});
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return debouncedFn;
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};
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