rc-js-util/src/array/impl/array-insert-at-index.spec.ts

A collection of TS and C++ utilities to help writing performant and correct applications, achieved through strict typing and (removable) invariant checking.

import { arrayInsertAtIndex } from "./array-insert-at-index.js";
import { Test_setDefaultFlags } from "../../test-util/test_set-default-flags.js";

describe("=> arrayInsertAtIndex", () =>
{
    beforeEach(() =>
    {
        Test_setDefaultFlags();
    });

    it("| returns the expected index", () =>
    {
        const a = [1, 2, 3];
        arrayInsertAtIndex(a, 5, 1);
        expect(a).toEqual([1, 5, 2, 3]);
    });
});