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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { assertEquals } from "../assert/mod.ts";import { reduceGroups } from "./reduce_groups.ts";
function reduceGroupsTest<T, A>(  input: [    record: Record<string, ReadonlyArray<T>>,    reducer: (accumulator: A, current: T) => A,    initialValue: A,  ],  expected: Record<string, A>,  message?: string,) {  const actual = reduceGroups(...input);  assertEquals(actual, expected, message);}
Deno.test({  name: "mapEntries() handles no mutation",  fn() {    const input = {      Woody: [2, 3, 1, 4],      Buzz: [5, 9],    };
    reduceGroups(input, (sum, it) => sum + it, 0);
    assertEquals(input, {      Woody: [2, 3, 1, 4],      Buzz: [5, 9],    });  },});
Deno.test({  name: "mapEntries() handles array of numbers",  fn() {    reduceGroupsTest(      [        {          Woody: [2, 3, 1, 4],          Buzz: [5, 9],        },        (sum, it) => sum + it,        0,      ],      {        Woody: 10,        Buzz: 14,      },    );  },});
Deno.test({  name: "mapEntries() handles array of strings",  fn() {    reduceGroupsTest(      [        {          Woody: ["foo", "bar"],          Buzz: ["foo", "bar", "baz"],        },        (sum, it) => sum + it + " ",        "",      ],      {        Woody: "foo bar ",        Buzz: "foo bar baz ",      },    );  },});
Deno.test({  name: "mapEntries() handles mapper",  fn() {    reduceGroupsTest(      [        {          Woody: [{ val: 14 }, { val: 24 }],          Buzz: [{ val: 1 }, { val: 2 }, { val: 3 }, { val: 4 }],        },        (sum, it) => sum + it.val,        0,      ],      {        Woody: 38,        Buzz: 10,      },    );  },});
Deno.test({  name: "mapEntries() handles initial value",  fn() {    reduceGroupsTest(      [        {          Woody: [],          Buzz: [],        },        (sum, it) => sum + it,        24,      ],      {        Woody: 24,        Buzz: 24,      },    );  },});
Deno.test({  name: "mapEntries() handles empty input",  fn() {    reduceGroupsTest([{}, () => 0, 0], {});  },});