Use .toBeBeforeOrEqualTo when checking if a date equals to or occurs before date

import {
  defineExpect,
  not,
  test,
  toBeBeforeOrEqualTo,
} from "https://deno.land/x/unitest@$VERSION/mod.ts";

const expect = defineExpect({
  matcherMap: {
    toBeBeforeOrEqualTo,
  },
  modifierMap: {
    not,
  },
});

test("passes when input is equal to or before date", () => {
  expect(new Date("01/01/2018")).toBeBeforeOrEqualTo(new Date("01/01/2019"));
  expect(new Date("01/01/2018")).toBeBeforeOrEqualTo(new Date("01/01/2018"));
  expect(new Date("01/01/2019")).not.toBeBeforeOrEqualTo(
    new Date("01/01/2018"),
  );
});