calculator-test.html

<!DOCTYPE html>
<html lang="en" dir="ltr">
  <head>
    <meta charset="utf-8">
    <title></title>
    <link rel="stylesheet"
    href="https://unpkg.com/jasmine-core@4.1.0/lib/jasmine-core/jasmine.css" />

<!-- include JS for Jasmine -->  
<script 
  src="https://unpkg.com/jasmine-core@4.1.0/lib/jasmine-core/jasmine.js"></script>
<script 
  src="https://unpkg.com/jasmine-core@4.1.0/lib/jasmine-core/jasmine-html.js"></script>
<script 
  src="https://unpkg.com/jasmine-core@4.1.0/lib/jasmine-core/boot0.js"></script>
<script 
  src="https://unpkg.com/jasmine-core@4.1.0/lib/jasmine-core/boot1.js"></script>
    <script type="text/javascript" src="calculator.js"></script>
    <script type="text/javascript" src="calculator-test.js"></script>
  </head>
  <body>

  </body>
</html>