Guide on verifying jQuery selector using jasmine

We are currently tasked with testing a function that determines the top position of an element. Specifically, we need to evaluate the top position of an element with the ID 'test'.

function findTopPosition(){
    var targetElement = $('#test');
    return targetElement[0].getBoundingClientRect().top;
}

As part of our testing process using Jasmine, we attempted the following approach:

var mockedObject = {
                name: 'test',
                getBoundingClientRect: function () {
                    return {top: 100}
                }
            }

spyOn($('#test'), 'getBoundingClientRect').and.returnValue([mockedObject]);

However, this resulted in an error message:

Error: <spyOn> : getBoundingClientRect() method does not exist
    Usage: spyOn(<object>, <methodName>) (line 4740)

Answer №1

Adding my input as the solution.

The getBoundingClientRect method is not included in jQuery, so you will not be able to retrieve its value through spying on it.

Alternatively, you can directly target the element using document.querySelector("#test").

spyOn(document.querySelector("#test"), 'getBoundingClientRect').and.returnValue([myObj]);

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

How can we use SWR to fetch user data conditionally based on their logged-in state?

I am facing an issue with setting the UI state based on whether a user is logged in or not. The UI should display different states accordingly. I am currently using SSG for page generation and SWR for user data retrieval. However, I noticed that when call ...

Exploring Source Map Explorer in Next.js: A Beginner's Guide

Looking for assistance in analyzing the Next.js build using source-map-explorer. Can anyone provide guidance on the script? For React (CRA), the script I use is: "build:analyze": "npm run build && source-map-explorer 'build/sta ...

Encountered an issue while processing the firebase get request with the following error message: 'Unauthorized request in Angular'

Here are my rules: Utilizing a Firebase database Calling an API URL from this section https://i.stack.imgur.com/auAmd.png I am attempting to retrieve data from a Firebase API in an Angular application, but I keep encountering an 'Unauthorized reque ...

Execute angular function as you scroll upwards in a chat application with pagination feature

I'm currently working on a chat application and looking to implement pagination upon scrolling up (not down). I am in need of a directive for this task. Additionally, I would like to display a preloader while loading new page data. Can someone advise ...

What is the process of transferring data from one div to another div (table) using AngularJS?

In my quest to enhance my table with JSON data upon clicking the + icon, I am faced with two sections: Pick Stocks where stock names and prices (retrieved from data.json) need to be added to the table found in the Manage Portfolio section. First Section h ...

AngularJS and .NET do not support the POST method

In my attempt to create a user-friendly interface with basic CRUD operations, I encountered an issue. While the GET methods are functioning correctly, I am struggling to make the POST method work (although it successfully inserts data into the database whe ...

How can I trigger a function once ng-show has finished executing?

I have an HTML table and buttons with the attribute ng-show=some_property. What I am trying to achieve is: I want Button1 to reveal a table containing field1, and I would like to change the focus directly from Button1 to field1. However, I am encounterin ...

Vue.js tutorial: Disabling button dynamically based on empty data array

My project involves creating a shopping cart application using Vue.js: var app = new Vue({ el: "#app", data: { items: [ { id: 1, name: "Item 00", spec: "spec 00", price: 400, quantity: 1, unit: &quo ...

An error occurred while trying to load the resource in the Redux-Saga: connection refused

Utilizing axios allows me to make calls to the backend server, while redux-saga helps in managing side effects from the server seamlessly. import {call, put, takeEvery} from "redux-saga/effects"; import {REQUEST_FAILED, REQUEST_SUCCESS, ROOT_URL, SUBMIT_U ...

Dealing with Failed Axios Requests in React

I'm having trouble figuring out what I'm doing incorrectly. My goal is for the Main component to pass the ajax request method to the child component InputForm. The child component would then return the results, which will be stored in the state ...

What is the best location to insert <script src=...></script> in an angular-fullstack-generator project?

I'm having trouble integrating mobile-angular-ui into my angular-fullstack-generator project. Despite receiving a proper 200 response in the network tab, I keep encountering an "Uncaught SyntaxError: Unexpected token <" error when trying to includ ...

Why is my filtering and sorting function failing to function properly?

I have a collection of events represented by an array of objects, where each event contains a start date and an end date. My goal is to filter out any events that have already passed based on the current time (now), and then sort the remaining events in d ...

Troubleshoot: Bootbox Confirm Functionality Issues

Can anyone help me troubleshoot this issue? I'm trying to implement code that uses bootbox.confirm when deleting a file, but it's not functioning correctly. $('#fileupload').fileupload({ destroy: function (e, data) { var that = $(th ...

Creating a recursive function using NodeJS

This particular challenge I am tackling is quite intricate. My objective is to develop a recursive function in NodeJS that can interact with the database to retrieve results. Based on the retrieved data, the function should then recursively call itself. F ...

Implementing multiple lists in a dropdown menu in React and dynamically displaying one based on the state

I am struggling to load multiple lists in options based on the selected country. I have tried various approaches but can't seem to get it right. Initially, I attempted to load all the lists and place them in <option> # lists <datalist id=&q ...

Using Fullcalendar Moment to retrieve the current time plus an additional 2 hours

Trying to tackle this seemingly simple task using moment.js in conjunction with Fullcalendar. My goal is to retrieve the current time and then add two hours to it. Within the select method (or whatever terminology you prefer), I currently have: select: f ...

Transferring variables between vanilla JS and Angular 2: A guide

I am facing a challenge where I need to retrieve an object title from vanilla JavaScript and then access it in my Angular 2 component. Currently, I am storing the variable in localStorage, but I believe there must be a better approach. The issue arises wh ...

What is the quickest method to identify duplicate entries within a JavaScript array?

let items = ['test0','test2','test0']; In the scenario shown above, we have two duplicate elements with the value "test0". What is the most efficient way to check for this duplication? ...

The idea of a webpage completely powered by Ajax

I'm currently in the process of creating a compact website that utilizes full ajax requests for features such as login and registration, all done asynchronously. However, I've come across an issue where if a user decides to refresh the site, any ...

Generate a JavaScript function on the fly

I am looking for a way to dynamically bind a function to the .click() event of multiple divs in a loop. Once clicked, the function should hide the respective div. Despite my attempts, I have been struggling with losing reference to the div and unsuccessful ...