Tips for Testing an Ajax jQuery Function Within the document.ready Event

I am in the process of developing a script that utilizes $.ajax to make requests for a json api. My goal is to create unit tests that can verify the results received from the ajax request. For instance, I expect the returned JSON object to contain "items" and "result" as an array. However, I am unsure about how to initialize the $.ajax function which is embedded within a

$("#button").click(function() { });

Included below is a snippet of my JavaScript file index.js. Please note that this is not the complete file but just the relevant sections. The application is functional. You can view the live version of this app online

$(document).ready(function() {
  var item, tile, author, publisher, bookLink, bookImg;
  var outputList = document.getElementById("list-output");
  var bookUrl = "https://www.googleapis.com/books/v1/volumes?q=";
  var searchData;

$("#search").click(function() {
    outputList.innerHTML = ""; //clear HTML output
     searchData = $("#search-box").val();
     //handle empty search input field
     if(searchData === "" || searchData === null) {
       displayError();
     }
    else {
       // console.log(searchData);
       // $.get("https://www.googleapis.com/books/v1/volumes?q="+searchData, getBookData()});
       $.ajax({
          url: bookUrl + searchData,
          dataType: "json",
          success: function(response) {
            console.log(response)
            if (response.totalItems === 0) {
              alert("no result!.. try again")
            }
            else {
              $("#title").animate({'margin-top': '5px'}, 1000); //search box animation
              $(".book-list").css("visibility", "visible");
              displayResults(response);
            }
          },
          error: function () {
            alert("Something went wrong.. <br>"+"Try again!");
          }
        });
      }
      $("#search-box").val(""); //clear search box
   });
});

Answer №1

To begin your test, create an HTML fixture that includes necessary elements such as #search. Once the fixture is ready, use $.getScript() to load your script, which will add a click event listener to #search. Lastly, set up a spy on $.ajax and manually trigger the click by using $('#search').trigger('click')

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