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JavaScript JavaScript Unit Testing Introducing Unit Testing Greater Expectations

My test script does not pass, throws an error

My test script throws an error even thou it same as the instructor's own.

var expect = require("chai").expect;

function titleCase(title) {
  var words = title.split("");
  var titleCasedWords = words.map(function(word) {
    return word[0].toUpperCase() + word.substring(1);

  return titleCasedWords.join("");

expect(titleCase("the great mouse detective")).to.be.a("string");
expect(titleCase("the great mouse detective")).to.equal(
  "The great Mouse Detective"

1 Answer

1) There is a space between the empty double quotes - here:

var words = title.split(" ");

and here:

return titleCasedWords.join(" ");

2) The G in the 2nd Great should be uppercase here:

expect(titleCase("the great mouse detective")).to.equal("The Great Mouse Detective")