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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { assertEquals } from "../assert/mod.ts";import { extension } from "./mod.ts";
Deno.test({  name: "extension()",  fn() {    const fixtures: [string, string | undefined][] = [      ["image/gif", "gif"],      ["application/javascript", "js"],      ["text/html; charset=UTF-8", "html"],      ["application/foo", undefined],    ];    for (const [fixture, expected] of fixtures) {      assertEquals(extension(fixture), expected);    }  },});