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Testing React Applications with Postman and WebdriverIO

Challenge: Unit Test a Vowels Counter Function

Challenge yourself by checking how many vowels are there in a word.

We'll cover the following...

Challenge overview

const vowels = (str) => {
  const matches = str.match(/[aeiou]/gi);
  return matches ? matches.length : 0;
};

Let’s explain the code written in the example above:

  • In line 1, we have a vowels function that takes in one parameter, str, which is a word passed into the function as a JavaScript string to test.

  • In line 2, we use a regular ...

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