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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { assertEquals } from "../assert/mod.ts";import { maxBy } from "./max_by.ts";
Deno.test("maxBy() handles array input", () => {  const input = [    { name: "Kyle", age: 34 },    { name: "John", age: 42 },    { name: "Anna", age: 23 },  ];
  const max = maxBy(input, (i) => i.age);
  assertEquals(max, { name: "John", age: 42 });});
Deno.test("maxBy() handles array input with mutation", () => {  const input = [    { name: "Kyle", age: 34 },    { name: "John", age: 42 },    { name: "Anna", age: 23 },  ];
  const max = maxBy(input, (i) => i.age - 10);
  assertEquals(max, { name: "John", age: 42 });});
Deno.test("maxBy() handles array input with multiple max", () => {  const input = [    { name: "Kyle", age: 34 },    { name: "John", age: 42 },    { name: "John", age: 42 },    { name: "Anna", age: 23 },  ];
  const max = maxBy(input, (i) => i.age);
  assertEquals(max, { name: "John", age: 42 });});
Deno.test("maxBy() handles array of positive numbers", () => {  const input = [2, 3, 5];
  const max = maxBy(input, (i) => i);
  assertEquals(max, 5);});
Deno.test("maxBy() handles array of negative numbers", () => {  const input = [-2, -3, -5];
  const max = maxBy(input, (i: number) => i);
  assertEquals(max, -2);});
Deno.test("maxBy() handles array of strings", () => {  const input = ["Kyle", "John", "Anna"];
  const max = maxBy(input, (i: string) => i);
  assertEquals(max, "Kyle");});
Deno.test("maxBy() handles of empty array", () => {  const input: number[] = [];
  const max = maxBy(input, (i) => i);
  assertEquals(max, undefined);});
Deno.test("maxBy() handles array of numbers with multiple max", () => {  const input = [2, 3, 5, 5];
  const max = maxBy(input, (i) => i);
  assertEquals(max, 5);});
Deno.test("maxBy() handles array of numbers with infinity", () => {  const input = [2, 3, 5, Infinity];
  const max = maxBy(input, (i) => i);
  assertEquals(max, Infinity);});
Deno.test("maxBy() handles array of numbers with NaN", () => {  const input = [2, 3, 5, NaN];
  const max = maxBy(input, (i) => i);
  assertEquals(max, 5);});
Deno.test("maxBy() handles no mutation", () => {  const input = [2, 3, 5];
  maxBy(input, (i) => i);
  assertEquals(input, [2, 3, 5]);});
Deno.test("maxBy() handles empty input", () => {  const emptyArray: Array<{ age: number }> = [];  const max = maxBy(emptyArray, (it) => it.age);
  assertEquals(max, undefined);});
Deno.test({  name: "maxBy() handles bigint",  fn() {    const input = [      "9007199254740999",      "9007199254740991",      "9007199254740995",    ];
    assertEquals(maxBy(input, (it) => BigInt(it)), "9007199254740999");  },});
Deno.test({  name: "maxBy() handles date",  fn() {    const input = [      "February 1, 2022",      "December 17, 1995",      "June 12, 2012",    ];
    assertEquals(maxBy(input, (it) => new Date(it)), "February 1, 2022");  },});