During my testing of a React/TypeScript project using Jest + Enzyme, I encountered an issue when trying to append an HTML tag. The error occurred with the following unit test code: const htmlTag: HTMLElement = document.createElement('html'); htm ...
While using Next.js, I set up Jest according to the official guidelines. However, when running a test for a component that utilizes the remark module, an error is encountered: Jest encountered an unexpected token Jest failed to parse a file. This occurs w ...
Can this query be broadened to ask - what is the best way to simulate all attributes on a module that has been imported in order to produce React components? ...
Previously, with vue-i18n (v8.25.0 and vue v2.6.14), I stored all translations in .ts files containing JS objects: import { LocaleMessages } from 'vue-i18n' const translations: LocaleMessages = { en: { test: 'Test', }, } export default translatio ...
I'm currently facing an issue where I need to mount a component that utilizes a function from a library. This particular function is utilized within the componentDidMount lifecycle method. Here's a simplified version of what my code looks like: import * a ...
Currently, I am struggling with an issue where there is no built-in method to retry flaky tests in Jest. My tech stack includes Jest + TypeScript + Puppeteer. Has anyone else encountered this problem or have any suggestions for possible solutions? I attem ...
I have just created a new project in VueJS and incorporated TypeScript into it. Below is my component along with some testing methods: <template> <div></div> </template> <script lang="ts"> import { Component, Vue } from ...
Below is a snippet of code where I am attempting to test the method getParameter for failure. The module A contains the method that needs to be tested. The test is located in Module A.spec. The issue I am facing is that the test always passes, as it never ...
Whenever I attempt to test TypeScript code: namespace MainNamespace { export class MainClass { public sum(a: number, b: number) : number { return a + b; } } } The test scenario is as follows: describe("main test", () ...
I'm facing some challenges while trying to perform an integration test on a material UI component. I can locate the slider element, but have not been successful in moving the slider and retrieving the new value. Can you provide any guidance on how to inter ...
I encountered an issue with the following code snippet: /* eslint-disable react/display-name */ import { Box, Button, LinearProgress, makeStyles } from '@material-ui/core'; import { Refresh } from '@material-ui/icons'; import { SearchHi ...
I recently included two libraries in my package.json "devDependencies": { ... "react-dom/test-utils": "*", "react-test-renderer/shallow": "*" }, These were recommended by the React documentation to align with version 16 of the React ecosy ...
I've utilized a table from material-ui import React from 'react'; import PropTypes from 'prop-types'; import { withStyles } from '@material-ui/core/styles'; import Table from '@material-ui/core/Table'; import T ...
My code testing tool, Jest, is indicating that I have only covered 50% of the branches in my return statement test. How can I go about testing the alternate branches? The code snippet below defines a function called getClient. It returns a collection h ...
I'm working with a component that has the following structure. How can I create a Vue Jest test that meets these specific requirements? <template> <div align="center"> <button @click="Tests()">Tests</button& ...
What is the best way to simulate this code snippet using Jest : useEffect(() => { document .getElementById('firstname') ?.querySelector('input-field') ?.setAttribute('type', 'password') }, []) ...
I have discovered various ways to utilize mock functions in jest for spying on callback functions passed down to a component, but I have not found any information on testing a simple onClick function defined within the same component. Here is an example f ...
Typically, I only test files ending with .ts, but this time I have a file containing utility methods that return a react element. Therefore, my file has a .tsx extension and includes components from material ui and other libraries. Initially, I encountere ...
I have a unique custom hook designed to manage the toggling of a product id using a boolean value and toggle function as returns. As I attempt to write a unit test for it following a non-typescripted example, I encountered type-mismatch errors that I' ...
Currently, I am facing an issue while running my project's tests on the CI/CD machines. These tests, which are performed using jest, have been smoothly executed on all environments for a significant period of time. However, after some package updates, ...
In an attempt to simulate a React function component for the purpose of validating the properties passed to it, I encountered an interesting difference in behavior. When the mock is placed at the top of the file, everything works as expected: const mockTra ...
When I run npm test on my React project, it runs unit tests using jest and react testing library. The test logs (including console log lines added for debugging) are printed to the screen but get deleted after running the tests. It seems like the logs are ...
I have a model setup in the following way: export class MyClass { grpcClient: MyGRPCClient; constructor(config: MyGRPCClientConfig) { this.grpcClient = new MyGRPCClient( config.serverUrl, grpc.credentials.createInsecure(), ); ...
Currently, I am attempting to simulate the file-type library within a jest test scenario. Within my javascript document, this particular library is utilized in the subsequent manner: import * as fileType from 'file-type'; .... const uploadedFileType = fi ...
I am encountering an issue with my Typescript project that contains two files, a.ts and b.ts. In a.ts, I have imported b.ts using the following syntax: import * from "./b.js" While this setup works smoothly with Typescript, Jest (using ts-jest) ...
I'm currently facing an issue while writing unit test cases using Jest in my Angular project. Whenever I attempt to run my test file, the following errors occur: TypeError: Cannot read property 'features' of undefined TypeError: Cannot read property 'enha ...
In my Node-Typescript-Express application, I am utilizing the FTP library to connect and retrieve files from a designated location. As part of creating unit tests, I am focusing on mocking the library to ensure coverage for code handling Ready and Error ev ...
In my project, I have a customized styled component for a navigation list item which is wrapped around a Material-UI list item. To override the default styles without using '!important' flags, I am utilizing the '&&' operator in the styling. impor ...
In my React component, I have the following code: componentWillUnmount () { document.body.classList.remove('isPreloaded') } Initially, in my index.html file, I have a body tag with the class isPreloaded, along with a Preloader HTML and ...
While conducting tests on my app components created with the material UI library using jest and enzyme, I encountered an error in one of my packages. Here is a screenshot of the error: Click here to view ...
Previously, I had this index.js file created for React version <= 17. import React from 'react'; import ReactDOM from 'react-dom'; import App from './views/App'; import reportWebVitals from './reportWebVitals'; im ...
I am delving into the world of Jest unit testing and exploring NodeJS for the first time. Currently, I am attempting to test my API using the code snippet below: const request = require('supertest'); const quick_registration = require('../. ...
I have successfully created a command-line interface (CLI) program using yargs. I have managed to cover test cases for all the functions exported by the application. However, there seems to be a gap in the test coverage from lines 12-18. Can you provide i ...
For quite some time now, I've been grappling with a particular issue. It all started when I was conducting basic integration tests using a MongoDB database. However, I've minimized the code to its simplest form. The only thing left running is a single test ...
For the past few years, I have been developing an ExpressJS server application for internal use at my workplace. This application serves as a clinical decision support tool utilized in various hospitals. As the application has grown significantly in size, ...
I am currently working on a project that involves using Clojure for the server-side and React for the client-side. In this project, there are two separate run/build configurations: one based on REPL for the server-side code, and another based on Jest for ...
We've just completed a major update to our monorepository, bringing it up to date with the following versions: Nx 14.3.6 Angular 14.0.3 Jest 28.1.1 TypeScript 4.7.4 Although the compilation process went smoothly after the upgrade, we encountered num ...
I decided to create a simple test using jest to simulate a date change function. Here is the code snippet: import React from 'react'; import '@testing-library/jest-dom'; import { render, screen } from '@testing-library/react'; import Calendar from './cale ...
While using Nx for my Angular workspace, I noticed something that sparked a question in my mind. Why is it necessary to use CommonJS modules in all tsconfig.spec.json files for libs? Looking at Nx examples, I observed that not all libs include it, only app ...
I have been attempting to mock a named imported function in a NextJS page, but so far all my efforts from various sources have been unsuccessful. I tried to replicate this by using create-next-app with --example with-jest and minimal code as shown below: ...
I am facing an issue with a Checkbox component in my project. I have implemented a simple functionality to hide the checkbox by setting its opacity : 0 based on certain conditions within the containing component (MyCheckbox) MyCheckBox.js import React fr ...
After updating from MUI v4 to version v5, I encountered failing tests with the following error: TypeError: Cannot read properties of undefined (reading 'keyboardDate') 17 | it("should render correctly without any errors", () =& ...
I have a module in NodeJS where I utilize a function called existsObject to validate the existence of a file in Google Storage. While testing my application with Jest 29.1.2, I am attempting to create a Mock to prevent the actual execution of this functio ...
Currently, I am utilizing jest in conjunction with the Vue framework to create unit tests. My test example is successfully passing, however, I am encountering an issue with logging the request. How can I resolve this error? Is there a mistake in my usage o ...
Issues Encountered My upgrade from NextJS v12.1.6 to v12.2.2 went smoothly except for one test file that is causing problems. During the execution of the BreadcrumbTrail test suite, a particular test is failing related to routing. The error suggests a nu ...
I am currently diving into jest while utilizing vue3 and jest 26.6.3 for my project //pachage.json "jest": { "moduleFileExtensions": [ "js", "json", "vue" ], "moduleNameMapper": { "^@/(.*)$": "<rootDir>/src/$1", "^vue$ ...
I've been experimenting with Jest to execute some TypeScript tests, but I've noticed that it's running quite slow. It takes around 10 seconds to complete the following tests: import "jest" test("good", () => { expec ...
In the process of developing a new application with Vue.js and axios, I am focusing on retrieving stock market details based on company names. To kickstart the application, I am compiling all the names of US-based S&p 500 companies into a JavaScript ar ...
I have a function that triggers another function which returns a Promise. Below is the code snippet for reference: export const func1 = ({ contentRef, onShareFile, t, trackOnShareFile, }) => e => { trackOnShareFile() try { func2(conte ...
Greetings, I have a couple of queries regarding Next.js, testing-library/react, and emotion. Before diving into the questions, let me share some code below: // Component import { css, Theme } from '@emotion/react'; function Foo() { return < ...
In my Jest setupTests file, I define several global identifiers such as "global.sinon = sinon". However, when typing these in ambient declarations, they apply to all files, not just the *.spec.ts files where the setupTests file is included. In the past, ...
I am the owner of a medium-sized nodejs application that can be found on GitHub under the link here. This application heavily relies on various 3rd party APIs to function. Essentially, the purpose of this app is to make calls to different Salesforce APIs, ...
The Jest documentation includes the following quote: Jest documentation: Node.js v6.* has Proxy enabled by default; if you are not using Node v6.*, be sure to run Jest with node --harmony_proxies node_modules/.bin/jest. My tests are running via npm tes ...
Seeking expert advice from the React Testing Library community on ensuring completion of a Material UI ripple animation before taking a snapshot. We've been experiencing inconsistent test results with our CI servers due to the animation finishing faster t ...
Can you test for specific Material UI icons, such as ArrowLeft or ArrowRight, instead of relying on .MuiSvgIcon-root? Code snippet from the App component: return {open ? <ArrowLeft/> :<ArrowRight/>} RTL Testing : The following tests are passi ...
Upon including setupFilesAfterEnv in the jest.config.js like this: module.exports = { preset: 'ts-jest', testEnvironment: 'node', setupFilesAfterEnv: ["./test/setupAfterEnv.ts"] } The mock functions seem to sto ...
I have been working on making assertions with jest mocked functions, and here is the code I am using: const mockSaveProduct = jest.fn((product) => { //some logic return }); jest.mock('./db', () => ({ saveProduct: mockSaveProduct })); ...
Troubleshooting the simulation of a click event on the Menu component using Antd v4.3.1 Component: import React from 'react' import PropTypes from 'prop-types' import { Menu } from 'antd' import { SMALL_ICONS, PATHS } from '../../constants' export co ...
I currently have some components that contain mui TextFields, and there are two specific scenarios for these components: One TextField is meant for LicenseCode and does not require a label. Additionally, there are several TextFields generated using t ...
Trying to understand React testing, I came across two files: Button.js and Button.test.js The code below contains the question along with comments: // Button.js import React from 'react'; import { string, bool, func } from 'prop-types'; import { StyledBu ...
When it comes to mocking a function of a component using Jest, Enzyme, and React, the process typically involves creating a shallow wrapper of the component and then overloading the function as needed. However, there seems to be an issue where the componen ...
Just starting out with unit testing in JavaScript and I'm attempting to create a unit test for a Next JS project. However, when running the test, I encountered the following error: Code: import {isBase64} from '../../service/base64-service' test('sho ...
I've encountered an issue where I can't mock files and functions that are utilized in the API call handler. The API call is being simulated with superagent. Below is the test code: // users.itest.js const request = require('superagent&apos ...
It's clear to me that including act() around user events is unnecessary since the testing library handles it automatically. However, despite this knowledge, I still receive warnings if I omit it. An instance of this is with a Material-UI component fea ...
I've been working on a mock test case using Jest in TypeScript, attempting to mock API calls with supertest. However, I'm having trouble retrieving a mocked response when using Axios in the login function. Despite trying to mock the Axios call, I ...
Previously, my Jest tests were functioning properly with Quasar version 0.14. Currently, some simple tests and all snapshot-tests are passing but I am encountering issues with certain tests, resulting in the following errors: console.error node_modules/vu ...
We developed a React library for use in another application. However, when attempting to link the library using npm link ../myLibrary, Jest tests fail with an error message: TypeError: Cannot read property 'webpackChunk_my_library' of undefined To work a ...
After setting up my Next.js project, I decided to install jest by running the command below: npm i --save-dev jest @testing-library/react @testing-library/jest-dom jest-environment-jsdom I then created a jest.config.json file with the following code snipp ...
I am currently delving into the world of jest testing. Here is a snippet from an implementation class I'm working with: import { ExternalObject } from 'external-library'; export class MyClass { public createInstance(settings : ISettings) : ExternalObjec ...
As a newcomer to React, please excuse any novice questions I may have. I am currently utilizing npx create-react-app to develop a React app, but I'm unsure of the inner workings: Q1-If I were to throw an error in a component like so: import React, { ...
Testing the functionality of a select component: <FormControl fullWidth> <InputLabel id="demo-simple-select-label"> {t("StrategyManager.Select_Action_Origin")} </InputLabel> <Select name="actionOr ...
Issue: Module react not found at path /home/react/node_modules/react-redux/lib/components While utilizing cypress for unit testing components, the tests are encountering the error mentioned above despite 'react' being present in the dependencies. ...
I am currently working on a reusable component that utilizes Material UI Grid containers. In my jest snapshot test, I encountered the following error message: Summary of all failing tests FAIL src/components/Form/__tests__/FormContentGrid.node.js ● ...
I have been facing a challenge in properly testing this File. Some tests require mocking the entire module, while others only need specific methods mocked. I have tried various combinations, but currently, for one specific test below, I am attempting the f ...
As a testing newcomer, I am still learning the necessary skills. I have been working on testing my error handler controller and after some time, I finally got it up and running. However, I would appreciate some feedback on the implementation. There seems ...