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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { assertEquals } from "../assert/mod.ts";import { mapValues } from "./map_values.ts";
function mapValuesTest<T, O>(  input: [Record<string, T>, (value: T) => O],  expected: Record<string, O>,  message?: string,) {  const actual = mapValues(...input);  assertEquals(actual, expected, message);}
Deno.test({  name: "mapValues() handles no mutation",  fn() {    const object = { a: 5, b: true };    mapValues(object, (it) => it ?? "nothing");
    assertEquals(object, { a: 5, b: true });  },});
Deno.test({  name: "mapValues() handles empty input",  fn() {    mapValuesTest(      [{}, (it) => it],      {},    );  },});
Deno.test({  name: "mapValues() handles identity",  fn() {    mapValuesTest(      [        {          foo: true,          bar: "lorem",          1: -5,        },        (it) => it,      ],      {        foo: true,        bar: "lorem",        1: -5,      },    );  },});
Deno.test({  name: "mapValues() handles falsy values",  fn() {    mapValuesTest<number, null | undefined | string | boolean>(      [        {          "something": 0,          "yetanotherkey": 1,          "andonemore": 2,          "lastone": 3,        },        (it) => [null, undefined, "", false][it],      ],      {        "something": null,        "yetanotherkey": undefined,        "andonemore": "",        "lastone": false,      },    );  },});
Deno.test({  name: "mapValues() handles normal mappers",  fn() {    mapValuesTest(      [        {          "FoodFile": "/home/deno/food.txt",          "CalendarFile": "/home/deno/weekend.cal",        },        (path) => path.slice(path.lastIndexOf(".")),      ],      {        "FoodFile": ".txt",        "CalendarFile": ".cal",      },    );    mapValuesTest(      [        {          "Curry": 20,          "Beans": 2,          "Rice": 3.5,        },        (price) => price.toFixed(2),      ],      {        "Curry": "20.00",        "Beans": "2.00",        "Rice": "3.50",      },    );  },});
Deno.test({  name: "mapValues() preserves key type (Record)",  fn() {    type Variants = "a" | "b";    const input: Record<Variants, string> = { a: "a", b: "b" };    const actual = mapValues(      input,      (_: string) => 1,    );    const expected = { a: 1, b: 1 };
    assertEquals(actual, expected);  },});
Deno.test({  name: "mapValues() preserves key type (Partial Record)",  fn() {    type Variants = "a" | "b";    const input: Partial<Record<Variants, string>> = { a: "a" };    const actual = mapValues(      input,      (_: string) => 1,    );    const expected = { a: 1 };
    assertEquals(actual, expected);  },});
Deno.test({  name: "mapValues() pass key to transformer",  fn() {    const key = "key";    const actual = mapValues(      { [key]: "value" },      (_, k) => k,    );    const expected = { [key]: key };
    assertEquals(actual, expected);  },});