Is there a way to mock the value of a hard private property in a unit test? For example, how can I expect something like
expect(event.getEventHis()).toBeEqual(['a', 'b'])export class EventController {
#event: [];
constructor() {
this.#event = [];
this.#lastIndex = 0;
}
getEventHis(): [] {
return this.#event;
}
getLastIndex(): number {
return this.#lstastIndex;
}
}
``
One way to simulate the behavior of the getEventHis() method and its output is by utilizing jest.spyOn(object, methodName).
For instance:
index.ts:
export class EventController {
#event: string[];
#lastIndex: number;
constructor() {
this.#event = [];
this.#lastIndex = 0;
}
getEventHis(): string[] {
return this.#event;
}
getLastIndex(): number {
return this.#lastIndex;
}
}
index.test.ts:
import { EventController } from './';
describe('68199289', () => {
it('should succeed', () => {
jest.spyOn(EventController.prototype, 'getEventHis').mockReturnValueOnce(['a', 'b']);
const event = new EventController();
expect(event.getEventHis()).toEqual(['a', 'b']);
});
});
Currently, I am working on a project to create a database that can be filtered using various options. My approach was to keep it simple by using HTML for sliders and checkboxes, along with JavaScript/jQuery for filtering the results. This setup allows me t ...
I am looking to enhance the Response object in Express by adding custom functions. Specifically, I want to introduce a function: sendError(statusCode: number, errorMessage: string) which can be called from anywhere like this: response.sendError(500, &qu ...
I've been working on updating the values of initUsers on the DOM. The initial state values work fine, but when I try to update initUsers, it displays different values than expected. Essentially, entriesNum receives a number as an event and changes th ...
How can I retrieve the panel numbers of jQuery UI tabs and adjust their visibility using CSS? I am looking to identify the panel numbers of each tab and control the visibility of certain tabs. <div id="tabs"> <ul> <li><a href="#"> ...
Is there a way to successfully download a large 400+ mb Json file using xmlhttprequest without encountering the dreaded Ah Snap message in Chrome due to its immense size? One potential solution I've considered is implementing setInterval() to read th ...
Consider this scenario: import { Action, AnyAction } from 'redux'; // interface Action<Type> { type: Type } and type AnyAction = Action<any> export type FilterActionByType< A extends AnyAction, ActionType extends string > ...
Being relatively new to react, I’ve adopted a method of defining default values which looks like this: class TextInput extends Component { render() { return ( <input type="text" name={ this.pr ...
Upon page load, I wanted to save the initial page information so that I could access it when navigating back from subsequent pages. (Initial Page -> Page2 -> Initial Page) After some trial and error, I ended up storing a global variable named first ...
Seeking assistance, I am currently working on building a portfolio using HTML while following a tutorial. I utilized undraw to insert an image but unfortunately, the image is fixed to the right-hand side: I would like to position the image below my icons, ...
Is there a way to create a menu like Google's user account menu using jQuery or Javascript? You can find an example of this dropdown menu on the top right corner when logged in to Google. See the image below for reference. ...
In my development workflow, I have established an Angular Component Library that I deploy using NPM (via Nexus) to various similar projects. This library includes a PageComponent, which contains a FooterComponent and a NavbarComponent. Within the NavbarCom ...
I am having trouble adding a loader to my site using the ajaxStart and ajaxStop requests to show and hide a div. The issue is that these requests are not being triggered by button onclick events. <style> // CSS for loader // Another class with o ...
Is there a way to adjust the quantity of products in the shopping cart? I would like to be able to increase and decrease the quantity, while also displaying the current value in a span tag. <a href="javascript:" id="minus2" onclick="decrementValue()" ...
Currently, I am facing an issue while attempting to integrate Semantic-UI-Vue into my Vue project. Upon trying to execute Vue.use(SuiVue), the following error message is displayed: Argument of type 'typeof import("semantic-ui-vue")' is not ass ...
I encountered an issue with my paginated article list (105 articles with 10 per page). Everything works fine on the first page, but when I click on an article from page 2 onwards, it takes me to the index of the very first article in the array. <div cla ...
I'm currently working on accessing the user's profile picture through Microsoft's Graph API. The code snippet below demonstrates how I am trying to obtain the profile image: export async function fetchProfilePhoto() { const accessToken = a ...
I'm attempting to create a slide show with an overlapping caption that appears when hovering over the container or image. The image needs to fit exactly inside the container so no scroll bar is shown and the border radius is correct. I managed to achi ...
I have encountered an issue where I am trying to multiply two numbers and add another number, but the output is displaying as NaN. How can I troubleshoot and solve this problem? Below is the code snippet: medicines = [new Medicine()]; this.sum = 0;// su ...
When working inside a v-for loop, I am attempting to add a character at the beginning of each item in a nested array that may contain multiple items. I have explored various options but have not been successful: :data-filter="addDot(item.buttonFilter ...
Curious to know the name of the effect where images scroll in a different orientation than the page, creating a 2D appearance. Take a look at the Google Nexus website and scroll down - do you see the effect? What is this effect called? Is it created usin ...