lookup.test.js

const createLookup = require("./lookup.js");

test.todo("creates a country currency code lookup for multiple codes");

/*

Create a lookup object of key value pairs from an array of code pairs

Acceptance Criteria:

Given
 - An array of arrays representing country code and currency code pairs
   e.g. [['US', 'USD'], ['CA', 'CAD']]

When
 - createLookup function is called with the country-currency array as an argument

Then
 - It should return an object where:
 - The keys are the country codes
 - The values are the corresponding currency codes

Example
Given: [['US', 'USD'], ['CA', 'CAD']]

When
createLookup(countryCurrencyPairs) is called

Then
It should return:
 {
   'US': 'USD',
   'CA': 'CAD'
 }
*/

// create single country currency in countryCurrencyPairs


//given an empty country currency pair/array

describe("createLookup", () => {

  test("creates a country currency code lookup for multiple codes", () => {
    const input = [['US', 'USD'], ['CA', 'CAD']];
    const expected = { US: 'USD', CA: 'CAD' };

    expect(createLookup(input)).toEqual(expected);
  });

  test("creates a single country code currency", () => {
    const input = [['GB', 'GBP']];
    const expected = { GB: 'GBP' };

    expect(createLookup(input)).toEqual(expected);
  });

  test("returns an empty object when given an empty pair", () => {
    const input = [[]];
    const expected = {};

    expect(createLookup(input)).toEqual(expected);
  });

});