import {expect, test} from "@jest/globals";

const whatToBeTested = [
    /*mutating function, returned value of mutating function, mutated array, not-mutating function, returned value of not-mutated function*/
];

test("pop is mutable", () => {
    const testArray =["Januar", "Februar", "Mars", "April"];
    const result = testArray.pop();
    expect(result).toBe(null);
    expect(testArray).toBe(null);
});