@mxmitch/lotide/test/findKeyByValueTest.js

A mini clone of the [Lodash](https://lodash.com) library.

const assert = require('chai').assert;
const findKeyByValue = require('../findKeyByValue');

describe("#findKeyByValue", () => {
  it("returns comedy for Brooklyn Nine-Nine", () => {
    assert.deepEqual(findKeyByValue(bestTVShowsByGenre, "Brooklyn Nine-Nine"), "comedy");
  });
  it("returns drama for The Wire", () => {
    assert.deepEqual(findKeyByValue(bestTVShowsByGenre, "The Wire"), "drama");
  });
  it("returns undefined for That 70's Show", () => {
    assert.deepEqual(findKeyByValue(bestTVShowsByGenre, "That '70s Show"), undefined);
  });
  it("returns undefined for an empty string", () => {
    assert.deepEqual(findKeyByValue(bestTVShowsByGenre, ""), undefined);
  });
});

const bestTVShowsByGenre = {
  sciFi: "The Expanse",
  comedy: "Brooklyn Nine-Nine",
  drama: "The Wire"
};