Questions tagged [enzyme]

React comes equipped with a unique unit testing library. This exceptional tool has been meticulously crafted by none other than Airbnb themselves. What sets it apart is its compatibility with various JavaScript testing frameworks such as Mocha, Jest, Karma, and more. Experience the seamless integration of this remarkable library to enhance your React applications' testing capabilities.

I encountered a mysterious Debug entry in my package.json within Visual Studio that seems impossible to remove

I found an unexpected Debug statement in my package.json file and I'm unsure of how it appeared there. I have no clue how to remove it either. https://i.stack.imgur.com/P7RFn.png Any ideas on how I can eliminate it from the file? ...

Here is a unique version: "Exploring the process of implementing act(...) for second, deferred,

I am currently working on a component that looks like this: function MyCustomComponent(props) { const [items, setItems] = useState([]); useEffect(() => { loadItems(); }, []); async function loadItems() { const result = await axios. ...

Add the specified HTML tag to the existing document. An error has occurred: HierarchyRequestError - The action would result in an invalid node

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 ...

What methods does Enzyme have for determining the visibility of components?

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 ...

Exploring Responsive UI Testing in React using Material-UI Components (Hidden, Grid, Breakpoints) with Enzyme or React Testing Library

Looking to verify responsiveness in Material-UI? Here is an example: import React from "react"; import Hidden from "@material-ui/core/Hidden"; const HideOnMobile = (props) => { return <Hidden xsDown>{props.children}</Hid ...

"Explore the React Storybook with a curated selection of three unique unit tests

I've encountered a puzzling issue. I have 9 unit tests that are running flawlessly with the jest command. However, when I run storybook, only 3 out of the 9 tests are displayed. The version of Storybook being used is 5.1.7. https://i.stack.imgur.com/l8nXf ...

Exploring the integration of Jest/Enzyme for testing React components while maintaining JSS style encapsulation

I've been facing some challenges while testing my React components with Jest due to the encapsulation of JSS components. Here's a pseudo code example: JSS(style.js): export default { pinkOnYellow: { color: 'pink', b ...

Checking React props using Jest and Enzyme - A simple guide

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 ...

Shallow Rendering with Enzyme and Material-UI: The function you are providing does not include a theme within the context

I am completely new to writing tests and I am currently in the process of incorporating them into an existing React project. One of the components that I'm working on is a button component that requires a theme context to function properly. Despite my effo ...

What is the best way to write unit tests for a Material-ui textfield component with enzyme?

As I continue to learn ReactJS with Enzyme and Material-ui, I am facing a new challenge. In my component that utilizes Material-ui's TextField, I want to perform a unit test for a specific scenario. When a user inputs '123' into the TextF ...

Jest and Enzyme failing to trigger `onload` callback for an image

I'm having trouble testing the onload function of an instance of the ImageLoader class component. The ImageLoader works fine, but my tests won't run properly. Here's an example of the class component: export default class ImageLoader extends React.Compone ...

Testing useEffect with React hooks, Jest, and Enzyme to add and remove event listeners on a ref

Here is a component I've been working on: export const DeviceModule = (props: Props) => { const [isTooltipVisible, changeTooltipVisibility] = useState(false) const deviceRef = useRef(null) useEffect(() => { if (deviceRef && dev ...

Struggling with testing the checkbox when it changes inside the CardHeader Avatar={} component

I've recently implemented a feature similar to the example showcased on MaterialUI's TransferList. However, I'm encountering difficulties accessing a checkbox within the avatar={}. The project utilizes Jest and Enzyme for testing purposes. T ...

Using enzyme mock function prior to componentDidMount

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 ...

What is the best way to simulate a library in jest?

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 ...

Experimenting with React component functionality using Enzyme and Jest

Currently, I am in the process of testing a component that follows the Container/Presentational pattern. To achieve 100% coverage, I need to test the handleChange() function which contains a setState() method. The challenge lies in the fact that I am only ...

Only class components can utilize ReactWrapper::state() in Unit Testing with Jest and Enzyme

Encountering an error while writing unit tests in React using Jest and Enzyme. The error message states: "ReactWrapper::state() can only be called on class components". import React from 'react'; import { mount } from 'enzyme'; import expect from 'expect' ...

Mastering AgGridReact Testing: A Comprehensive Guide Using Jest and Enzyme

Seeking guidance on testing AgGridReact with Jest/Enzyme. I'm attempting to simulate the onGridReady callback that should trigger automatically, but it's not working as expected. Below is a simplified version of my test scenario: import React from "react" ...

Guide to simulating a function using .then within a hook

I am using a function that is called from a hook within my component. Here is my component: ... const handleCompleteContent = (contentId: string) => { postCompleteContent(contentId, playerId).then(data => { if (data === 201) { ... The caller ...

Issue with unit tests failing to properly update states after calling setState within a callback function

Exploring a basic modal component has led me to a scenario where upon clicking a button to open it, a request is triggered with two callback functions (success and error). The success callback aims to modify three states: function successGetData(data) { ...

Don't worry about Higher Order Components while conducting tests on React Components

Currently, I am attempting to test a straightforward Material UI select form that utilizes a FormControl and is exported with withStyles. In my testing scenario, the goal is quite simple: I wish to confirm that my component appropriately renders a child el ...

Analyzing outcomes of asynchronous requests initiated within the useEffect hook

I need to ensure that my custom hook retrieves data from an API when it is initialized. The code snippet for the custom hook is as follows: import * as React from 'react'; import { findByStatus } from '../../services/AssignmentService'; import Assignment ...

What is the best way to choose a specific row with Enzyme?

We have chosen Jest for doing UI Test-Driven Development on our React application. Our component rendering structure looks like this: <Div> <Row> </Row> <ROW> <Row> <ROW> <Link> <Link> ...

Error: The property 'create' of undefined cannot be read (Material UI/enzyme)

When I mount a component, I encounter an error that does not occur when using shallow rendering. The specific error is: TypeError: Cannot read property 'create' of undefined at stylesOrCreator (node_modules/@material-ui/core/CircularProgress/CircularPro ...

Having trouble triggering a click event on Ant Design menu button using jest and enzyme

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 ...

Troubleshooting React Tests: Investigating the Reason Behind the Failure of a Jest Snapshot Test for a Component Utilizing Material UI's Grid

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 ● ...

Exploring the Capabilities of Connected Container Functions through Jest and Enzyme Testing

I am currently working with a connected container that looks like this: import React from 'react'; import PropTypes from 'prop-types'; import { bindActionCreators } from 'redux'; import { connect } from 'react-redux&apos ...

Finding the imported function in Jest Enzyme's mount() seems impossible

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 ...

Discovering the status of a wrapped component using Jest

const wrapper = mount( <ContextProvider> <FreeformEquationQuestionPractice question={question} /> </ContextProvider> ) console.log('freeform state: ', wrapper.childAt(0).instance().state) FreeformEquationQuestionPracti ...

Running Jest encounters errors when there is ES6 syntax present in the node modules of a create-react-app project

Currently, I am working on a project using create-react-app and attempting to perform unit testing on a component from office-ui-fabric-react using Jest and Enzyme. The most recent version of office-ui-fabric-react utilizes es6 syntax which is causing iss ...

Experiencing an issue with hasClass when conducting jest testing on react components

I've recently started using Jest to test my React components, and this is my very first test. Here's the code snippet for my component: import React from 'react'; import PropTypes from 'prop-types'; import uuidv1 from 'uuid'; import withStyles from 'react ...

Exploring the functionality of React components within components using enzyme

Following up on a previous issue related to testing nested components with Enzyme in React & Redux (Link)... I'm facing a challenge where I need to test props and methods of a component that must be rendered within a provider to function properly: const ...

What is the best way to check for a "click" event on the icon button within the material-ui AppBar component?

I'm currently experimenting with a React component: import React from 'react' import AppBar from 'material-ui/lib/app-bar' class NavBar extends React.Component { render () { return ( <div> <AppBar title='My Custom N ...

Ways to check if styles are being dynamically implemented within a React component

I have developed a React component named Button: import PropTypes from 'prop-types' import Radium from 'radium' import React from 'react' import { Icon } from 'components' import { COLOURS, GLOBAL_STYLES, ICONS, MEASUREMENTS } from 'app-constants' @Radiu ...

ConfirmUsername is immutable | TypeScript paired with Jest and Enzyme

Currently, I am experimenting with Jest and Enzyme on my React-TS project to test a small utility function. While working on a JS file within the project, I encountered the following error: "validateUsername" is read-only. Here is the code for the utilit ...

Can Enzyme snapshots be utilized with React fragments?

Are React fragments compatible with Enzyme's snapshots? Currently, it appears that fragments from React 16+ are being displayed as Symbols in enzyme's shallow() method, leading to a conversion error: "TypeError: Cannot convert a Symbol value to a string". ...

Unable to trigger enzyme test click event on a material ui Checkbox within a redux-form Field component

I am currently working on setting up an enzyme/mocha/chai test to replicate the scenario where the state of a materialUI Checkbox component changes from true to false. The Checkbox is enclosed within a redux-form Field, and I am facing difficulties in simu ...

Error: Jest react testing encountered an issue when attempting to read the property 'type' from an undefined value

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 ...

Is there a way to replicate a change in value on a Material UI Slider?

I'm currently testing a state change using React Hooks (useState) by simulating a value change on a Material UI slider to trigger my hooks state update function. However, I'm facing an issue when trying to verify the change by checking the displa ...

Experiment with Google Sign-In authentication in jest with Firebase

As I try to effectively mock firebase authentication with Google login, I am encountering some difficulties. Below is the code that I am currently working with: simple.tsx import React, { Component } from 'react'; import * as firebase from &apo ...

What are some methods for testing enzyme, react-virtualized, and material-ui components?

I am facing a unique testing scenario where I need to interact with a component wrapped in TreeView from material-ui that is nested inside the List component from react-virtualized. Here is my approach: wrapper .find(TreeView) .dive() .find(AutoSiz ...

Error: The value for 'prepareStyles' property is undefined and cannot be read

Can anyone provide some guidance on this code snippet? I am struggling to understand the error message I am receiving. import React, {PropTypes} from 'react'; import TransactionListRow from './TransactionListRow'; import {Table, TableB ...

Encountering an error stating "target" property is undefined while testing the useState function

I'm attempting to utilize these state methods when passing state from a parent component to a child component const [bio, setBio] = useState(""); const [gravatar, setGravatar] = useState(""); However, I am encountering the following error: ✓ Should ch ...

Issue: The `mount()` function was called without a global document being loaded

While attempting to mount a component for testing using enzyme, I encountered the following error message. ...

Exploring tabs functionality with Material UI, Jest, and Enzyme testing

I am currently testing a component with tabs. My initial test is to verify the correct initial state, followed by testing whether clicking on another tab changes the state. The technologies I am using for this are material-ui, jest, and enzyme. import Rea ...

Enzyme fails to locate text within a div even though it is present

In my current test scenario, I have a set of data displayed in Material-UI Cards. The data is provided through a JSON array consisting of objects with fields like projectName, crc, dateCreated, createdBy, and lastModified. { projectName: 'Projec ...

Guide to efficiently testing the onChange event for a ui-material TextField component with Jest and Enzyme

I am a beginner in testing and struggling to test the changing value in the TextField component export const ParentComponent = ({ question, onValueChange }: ParentProps) => { const [value, setValue] = useState(default); const on ...

Top method for creating integration tests in React using Redux and Enzyme

Currently, I am working on setting up integration tests within my application. There are a few API calls that occur both when the component mounts and upon a button click. The response from these API calls is stored in the app's store, which then updates ...

How can we check for the presence of the string '...loading' in a React component that utilizes styled-components?

Looking for tips on writing jest enzyme assertions for styled components? Typically, my test setup includes the following: import React from 'react'; import { shallow } from 'enzyme'; // test-setup.js import { configure } from 'e ...

Exploring the optimal placement and techniques for testing an ESC keydown event within a modal component

In my latest project, I created a modal component with added functionality to close it when the ESC key is pressed. Here's how I implemented this behavior in a ModalContainer component: componentDidMount() { window.addEventListener('keydown&ap ...

Exploring the `React.createRef` method using Enzyme for testing purposes

Is there a way to test the following class that utilizes the React.createRef API? I couldn't find any examples online. Has anyone attempted this before? How can I mock the ref effectively? My preference would be to utilize shallow. class Main exten ...

Using Jest and React: How can I invoke a function within the expect(setInterval).toHaveBeenLastCalledWith() method?

While testing the component in the Jest environment, I am facing a challenge with passing the function callback inside the setInterval method. Every time I run the test, I encounter an error message related to the 'expect' statement: The mock ...

"Unable to execute validateOptions as it is not a recognized function

ERROR src/pages/trade/trade-sagas/trade-sagas.unit.test.js ● Test suite failed to run Cannot locate module 'axios' from 'src/pages/trade/trade-sagas/trade-sagas.unit.test.js' 1 | import { runSaga } from "redux-saga"; &g ...

Testing Content Rendered in a Modal or Popover using React, Jest, and Material-UI

Some material-ui components, such as Dialog and Menu, do not render their results in the same location as where they are placed by their parent component. Due to this behavior, testing for the presence of content within these components becomes challengin ...

Testing a project can become challenging when it involves third-party modules that have not been transpiled

Having issues using enzyme to test my React Native project even after following the set up instructions. Link to Set Up Instructions "scripts": { "start": "node node_modules/react-native/local-cli/cli.js start", "test": "mocha --require react ...

How to manage Apollo-wrapped children in test cases when mounting the React component

For the past few months, I've been immersed in working with ApolloJS within React (using react-apollo) and have encountered various tricks and challenges when it comes to unit testing components wrapped with Apollo. When testing a component directly wrapp ...

Error: Attempting to access property 'map' of an undefined value

I am currently working on setting up a unit test for the code snippet below. I have identified where the error is occurring: populateActionDropdown = (actionList) => { let actions = actionList.map(action => { if (action.Name != 'Sig ...

"Encountering an issue with mounting components in React Unit Testing with Jest and Typescript

Having developed a simple app with components, here is the code: import GraphicCanvas from './Graphing/GraphCanvas'; import { drawCircle } from './Graphing/DrawCircle'; function App() { return ( <div className="App"> < Graphic ...

Challenges encountered during the execution of React tests: Enzyme, Jest, and React integration

Encountered an error while running tests: FAIL src/components/common/user/UserMenu/__tests__/UserMenu.test.js ● Runtime Error Error: Failed to get mock metadata: /redacted-directory/node_modules/core-js/library/modules/_global.js See: http://facebook ...

Could Enzyme testing be implemented with Next.js (SSR)?

Embarking on my inaugural Next.js project with SSR. Encountering issues when attempting to incorporate Enzyme for ReactJS UI testing. It fails to run, displaying the error message: "React' refers to a UMD global, but the current file is a module ...

Trying out the componentWillUnmount() function to erase a class from the body element

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 ...

What is the best way to test the props that are passed to a child component using Enzyme Shallow?

I am facing an issue while testing a component that wraps the Material-UI autocomplete in a thin layer. When running my test, I want to check the props being passed to it but find that my console statement returns an empty object. I am using Enzyme's shall ...

How can we replicate user input in React for unit testing purposes?

Struggling to unit test a React component that accepts user input, specifically the onChange function within the component. Unable to set the input value despite trying various methods found online. Below is the component under test: class Input extends C ...