@nknahom/lotide/test/countOnlyTest.js

Lotide is mini clone of the Lodash (https://lodash.com) library for learning JavaScript. What is Lodash? Lodash is a library that makes JavaScript easier by taking the hassle out of working with arrays, numbers, objects, strings, etc.

const assert = require("chai").assert;
const countOnly = require("../countOnly");

describe("#countOnly", () => {
  it('it should return 1 for ["Jason"]', () => {
    const firstNames = [
      "Karl",
      "Salima",
      "Agouhanna",
      "Fang",
      "Kavith",
      "Jason",
      "Salima",
      "Fang",
      "Joe",
    ];

    const result1 = countOnly(firstNames, {
      Jason: true,
      Karima: true,
      Fang: true,
      Agouhanna: false,
    });
    assert.strictEqual(result1["Jason"], 1);
  });

  it('it should return undefined for ["Karima"]', () => {
    const firstNames = [
      "Karl",
      "Salima",
      "Agouhanna",
      "Fang",
      "Kavith",
      "Jason",
      "Salima",
      "Fang",
      "Joe",
    ];

    const result1 = countOnly(firstNames, {
      Jason: true,
      Karima: true,
      Fang: true,
      Agouhanna: false,
    });
    assert.strictEqual(result1["Karima"], undefined);
  });
});