A screenshot of the Action Chain editor's Tests tab showing a tests for a Call REST action. On the right side, in the Parameters section, a value is entered for the movie ID, which is the only parameter. Below this section, there is the Mocks section populated with an Action called loadGETMovieMovieiD and a Return containing a JSON response whose parameters are status, statusText, ok, headers, and body. Below this, there is an Expectations section populated with Variables.