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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { assertEquals } from "../assert/mod.ts";import { mapNotNullish } from "./map_not_nullish.ts";
function mapNotNullishTest<T, O>(  input: [Array<T>, (el: T) => O | undefined | null],  expected: Array<O>,  message?: string,) {  const actual = mapNotNullish(...input);  assertEquals(actual, expected, message);}
Deno.test({  name: "mapNotNullish() handles no mutation",  fn() {    const array = [1, 2, 3, 4];    mapNotNullish(array, (it) => it * 2);
    assertEquals(array, [1, 2, 3, 4]);  },});
Deno.test({  name: "mapNotNullish() handles empty input",  fn() {    mapNotNullishTest(      [[], (it) => it],      [],    );  },});
Deno.test({  name: "mapNotNullish() handles identity",  fn() {    mapNotNullishTest(      [        [[], 1, 3],        (it) => it,      ],      [[], 1, 3],    );  },});
Deno.test({  name: "mapNotNullish() handles mappers without nullish values",  fn() {    mapNotNullishTest(      [        ["Anna", "Kim", "Hans"],        (it) => it.charAt(0),      ],      ["A", "K", "H"],    );    mapNotNullishTest(      [        [3, 4, 5, 6],        (it) => it * 2,      ],      [6, 8, 10, 12],    );  },});
Deno.test({  name: "mapNotNullish() handles mappers with nullish values",  fn() {    mapNotNullishTest(      [        ["Errors: 5", "Success", "Warnings: 10", "..."],        (it) =>          it.match(/\w+: (?<numberOfProblems>\d+)/u)?.groups?.numberOfProblems,      ],      ["5", "10"],    );    mapNotNullishTest(      [        [          { first: "Kim", middle: undefined, last: "Example" },          { first: "Arthur", middle: "Hans", last: "Somename" },          { first: "Laura", middle: "Marija", last: "Anothername" },          { first: "Sam", middle: null, last: "Smith" },        ],        (it) => it.middle,      ],      ["Hans", "Marija"],    );  },});