packages/util/src/is/function.spec.ts
// Copyright 2017-2024 @polkadot/util authors & contributors
// SPDX-License-Identifier: Apache-2.0
/// <reference types="@polkadot/dev-test/globals.d.ts" />
import { isFunction } from './index.js';
describe('isFunction', (): void => {
it('returns true on valid functions', (): void => {
expect(
isFunction(isFunction)
).toEqual(true);
});
it('returns false on invalid functions', (): void => {
expect(
isFunction('notAFunction')
).toEqual(false);
});
});