areacode-to-zipcode/tests/getDataFromAreaCode.test.ts

Translate area codes to zip codes. A utility for looking up postal codes in the US.

import { count } from "console";
import { getDataFromAreaCode } from "..";

test('gets zipcode from areacode', () => {
    const result = getDataFromAreaCode(212);
    expect(result).toEqual({
        city: "New York City",
        state: "NY",
        zipCode: "10024",
        country: "US"
    });
});

test('gets zipcode from toll-free areacode', () => {
    const result = getDataFromAreaCode(887);
    expect(result).toEqual({ city: null, state: null, zipCode: null, country: null });
});


test('zipcode does not exist', () => {
    const result = getDataFromAreaCode(911);
    expect(result).toEqual(null);
});