Unlocking the style within a .css file during an Angular unit test - here's how to do

I have been working on unit testing for an Angular app, specifically trying to access styles from a .css file within the unit test. I will share with you what I have attempted so far.

 component.listedIps.length=0;
 fixture.detectChanges();

 let whitelistipsdiv=fixture.debugElement.query(By.css('.divAllAllowedIPs'));

 //Unit test for style: checking background-color to be green
 expect(whitelistipsdiv.nativeElement.style.backgroundColor).toEqual('green');// Expected darkgreen but it's null

.css file

.divAllAllowedIPs {
  background-color: green; 
}
cssangulartypescriptunit-testingkarma-jasmine

Answer №1

Apologies for the delay, but give this a try. It's guaranteed to work without fail.

  it('should have a green background color', () => {
    const element = fixture.debugElement.query(By.css(".divAllAllowedIPs")).nativeElement;
    expect(getComputedStyle(element).backgroundColor).toEqual('rgb(0, 128, 0)');
  });

I believe this solution will benefit others with similar queries.

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

My components views are not being rendered in Angular 4

Currently, I am in the process of learning how to use Angular 4, but I seem to be encountering an issue. Despite having a functioning App template that renders perfectly fine, I am facing difficulties when attempting to render more than one template. I cre ...

javascriptangular

What could be causing the overflow of my <table> data from its parent <div> container in Bootstrap?

Currently, I am trying to utilize angular in conjunction with bootstrap to present my data. I have mock data stored within a component and displayed in the html file of that component. However, I am facing an issue where when the table expands in size, it ...

htmlcssangularbootstrap-4

Encountering an error when trying to declare a type in VSCode with ESlint and React Types

After setting up an axios configuration file with proper typing support, I encountered the following error message: import axios, { AxiosRequestConfig, AxiosInstance } from 'axios'; const api = axios.create({ baseURL: '/api', resp ...

reactjstypescriptaxioseslint

Guide to generating touch interactions with Angular 2 and beyond

What are some methods for implementing touch events in Angular, since Angular does not natively support touch events like (click)? ...

javascriptangulartouch

How can I utilize a filter or pipe to populate product categories onto screens within Ionic 2?

I am considering creating an Ionic 2 app with 6 pages, but I'm unsure whether to utilize a Pipe or a Filter for the individual category pages and how to implement the necessary code. Each category page should be able to display products from the "app ...

javascriptangulartypescriptionic2ionic3

Injecting a service into a base class in Angular, but not in the sub-class, then utilizing the parent service in the sub-

When working with Angular 7 and Typescript, I have a base class that relies on multiple services and has around 40 subclasses. Instead of adding these services to each subclass constructor and passing them to super(), I am looking for a more efficient wa ...

angulartypescriptangular7

The database is receiving new information, however, it is not being visually represented on the frontend

After making updates to my user details, I noticed that the changes are reflected in the collection data but not on the page when I refresh. However, upon logging out and back in, the updated information is displayed correctly. For some reason, the compone ...

angularmongodb

Creating a text container in PHP for displaying information

As someone who is new to PHP and HTML, I'm curious about the CSS statements needed to create a text box that will display a value from one of my PHP functions. Right now, the function retrieves data from an SQL server and returns it, but I would like ...

phphtmlcsstextbox

The attribute 'xxx' is not found within the 'Readonly<{}>' type

I am currently in the process of writing tests for a React Typescript component. App.tsx: import * as React from 'react'; import { Button } from 'react-bootstrap'; interface Igift { id: number; } interface IAppState { gifts: Igi ...

javascriptreactjstypescriptfrontendjestjs

Tips for increasing the complexity of your bottom-line animation

Hello everyone, I am currently learning the basics of CSS and have a question about a specific animation effect. Please bear with me if this type of inquiry is not suitable for StackOverflow. In my index.html file, I have the following code: <n ...

htmlcss

What is the difference between TypeScript's import/as and import/require syntax?

In my coding project involving TypeScript and Express/Node.js, I've come across different import syntax options. The TypeScript Handbook suggests using import express = require('express');, while the typescript.d.ts file shows import * as ex ...

javascriptnode.jsexpresstypescript

Guidelines for automating button click using selenium in Python

<div class="wrapper"> <button class="w-full h-14 pt-2 pb-1 px-3 bg-accent text-dark-1 rounded-full md:rounded select-none cursor-pointer md:hover:shadow-big focus:outline-none md:focus:bg-accent-2 md:focus:shadow-small "> ...

pythoncssseleniumautomationselenium-chromedriver

Creating a responsive design for Bootstrap divs

I am trying to display 5 images in one row with 5 columns. I have used the following CSS for this layout: .col-half-offset { margin-left: 4.166666667% } This setup works well on the web, but on mobile devices, the layout does not di ...

htmlcssbootstrap-4responsive-design

Creating a global user object accessible to all Angular2 components

Hey there! I've successfully shared the Parent container's property with an attribute directive and inputs, but it's not working when the child component is brought in using <router-outlet>. Any suggestions on how to share it with ever ...

dependency-injectionangularangular2-routingangular2-directives

Scroll horizontally in Ionic 3 without displaying the scrollbar by implementing a button

Is there a way to implement ion scroll in such a manner that upon clicking the right arrow button, it smoothly transitions to the next element within the div section of ion content in Ionic 3 without displaying any scrollbar? I want the scrollbar to remain ...

angularionic3ion-scroll

NextJS Typescript Layout is throwing errors due to the absence of required props

After following the instructions on https://nextjs.org/docs/basic-features/layouts#with-typescript and making changes to my Home page as well as _app.tsx, I encountered an issue with the layout file Layout.tsx. The provided guide did not include an exampl ...

reactjstypescriptnext.js

The 'catch' property is not found within the type 'PromiseLike<void>'

Help! I'm encountering a Typescript Error. An issue is arising with the 'catch' property on type 'PromiseLike<void>'. I am using Ionic and facing an error in the line containing catch: sendrequest(req: connreq) { var p ...

typescriptionic2

What is the best way to initialize a component only when its tag is set to *ngIf=true?

Update: After receiving a very helpful answer from Günter Zöchbauer that resolved my issue, I still have a lingering question about the correct approach for achieving the desired result. The context is provided below. With my custom tag on the parent ...

angularangular2-templateangular2-directives

Exploring the integration of SendGrid with Angular and NodeJS

Struggling to send an email using Angular and SendGrid. The NPM package is installed correctly, but I'm facing challenges with code implementation. Generated API key stored in directory: echo "export SENDGRID_API_KEY='YOUR_API_KEY'" > se ...

node.jsangularsendgridsendgrid-api-v3

TypeScript Error: Attempting to slice an undefined property - TypeError

In my Angular project, I have a csv file containing data that is imported along with the D3.js library: group,Nitrogen,normal,stress banana,12,1,13 poacee,6,6,33 sorgho,11,28,12 triticum,19,6,1 The TypeScript file includes code for displaying a stacked ba ...

javascriptangulartypescriptd3.js