@b1u3too/lotide/test/findKeyByValueTest.js

LHL Web Development Flex Program Project -- Helper function library inspired by lodash

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

describe("#findKeyByValue", () => {
  it("should return the key if the desired value is found", () => {
    const bestTVShowsByGenre = {
      sci_fi: "The Expanse",
      comedy: "Brooklyn Nine-Nine",
      drama:  "The Wire"
    };    
    assert.strictEqual(findKeyByValue(bestTVShowsByGenre, "The Wire"), "drama");
    assert.strictEqual(findKeyByValue(bestTVShowsByGenre, "The Expanse"), "sci_fi");
  });
  it("should return undefined if the desired value is not found", () => {
    const bestTVShowsByGenre = {
      sci_fi: "The Expanse",
      comedy: "Brooklyn Nine-Nine",
      drama:  "The Wire"
    };
    assert.strictEqual(findKeyByValue(bestTVShowsByGenre, "That '70s Show"), undefined);
    assert.strictEqual(findKeyByValue(bestTVShowsByGenre, ""), undefined);
  });
});