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import { assertEquals } from "https://deno.land/std@0.95.0/testing/asserts.ts";import { Timezone } from "./types.ts";import { tzOffset } from "./timezone.ts";import { MILLISECONDS_IN_HOUR } from "./constants.ts";
Deno.test("tzOffset", () => {  type Test = {    date: Date;    tz: Timezone;    expected: number;  };  const tests: Test[] = [    { date: new Date("2021-05-13T12:15:30Z"), tz: "Asia/Tokyo", expected: 9 },    { date: new Date("2021-05-13T12:15:30Z"), tz: "UTC", expected: 0 },    {      date: new Date("2021-05-13T12:15:30Z"),      tz: "America/New_York",      expected: -4,    },    {      date: new Date("2021-12-13T12:15:30Z"),      tz: "America/New_York",      expected: -5,    },  ];  tests.forEach((t) => {    assertEquals(tzOffset(t.date, t.tz), t.expected * MILLISECONDS_IN_HOUR);  });});