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// Copyright 2019-2020 Yusuke Sakurai. All rights reserved. MIT license.import { group } from "./_test_util.ts";import { createDataHolder } from "./data_holder.ts";import { assertEquals } from "./vendor/https/deno.land/std/testing/asserts.ts";
group("data_holder", ({ test }) => {  test("basic", () => {    const data = createDataHolder();    assertEquals(data.get("k"), undefined);    assertEquals(data.getString("k"), undefined);    assertEquals(data.getNumber("k"), undefined);    assertEquals(data.getBoolean("k"), undefined);    data.set("string", "s");    assertEquals(data.get("string"), "s");    assertEquals(data.getString("string"), "s");    data.set("number", 1);    assertEquals(data.get("number"), 1);    assertEquals(data.getNumber("number"), 1);    data.set("boolean", true);    assertEquals(data.get("boolean"), true);    assertEquals(data.getBoolean("boolean"), true);    data.delete("string");    assertEquals(data.get("string"), undefined);  });});