Security News
ESLint is Now Language-Agnostic: Linting JSON, Markdown, and Beyond
ESLint has added JSON and Markdown linting support with new officially-supported plugins, expanding its versatility beyond JavaScript.
jest-environment-node
Advanced tools
The jest-environment-node npm package is a test environment for Jest that simulates a Node.js environment. It is used when testing Node.js specific code. It provides a global environment that's set up for each test file to be executed in a Node-like environment, with all the necessary globals like `process` and `Buffer` available.
Simulating Node.js Environment
This configuration in Jest's setup file tells Jest to use the Node environment for testing. It is useful when you want to test code that relies on Node.js APIs.
module.exports = { testEnvironment: 'jest-environment-node' };
Global Setup and Teardown
This feature allows you to extend the Node environment to add custom setup and teardown logic that runs before and after each test suite.
class CustomEnvironment extends NodeEnvironment {
async setup() {
await super.setup();
// Your setup code here
}
async teardown() {
// Your teardown code here
await super.teardown();
}
}
Custom Module Mocking
In a Node environment, you can mock Node modules like 'fs' to control their behavior during tests, which is useful for testing code that interacts with the filesystem without actually reading or writing files.
jest.mock('fs', () => ({
readFileSync: jest.fn().mockReturnValue('mocked content'),
}));
This package is similar to jest-environment-node but is intended for testing web applications by simulating a browser environment using jsdom. It provides a DOM API that can be used in tests.
This package integrates Jest with Puppeteer for end-to-end testing. It sets up a browser environment and allows for testing user interactions with a real browser.
This package is designed for integration with Selenium WebDriver for browser-based testing. It is similar to jest-environment-puppeteer but uses WebDriver API for controlling browsers.
29.2.0
[@jest/cli, jest-config]
A seed for the test run will be randomly generated, or set by a CLI option (#13400)[@jest/cli, jest-config]
--show-seed
will display the seed value in the report, and can be set via a CLI flag or through the config file (#13400)[jest-config]
Add readInitialConfig
utility function (#13356)[jest-core]
Allow testResultsProcessor
to be async (#13343)[@jest/environment, jest-environment-node, jest-environment-jsdom, jest-runtime]
Add getSeed()
to the jest
object (#13400)[expect, @jest/expect-utils]
Allow isA
utility to take a type argument (#13355)[expect]
Expose AsyncExpectationResult
and SyncExpectationResult
types (#13411)[babel-plugin-jest-hoist]
Ignore TSTypeQuery
when checking for hoisted references (#13367)[jest-core]
Fix detectOpenHandles
false positives for some special objects such as TLSWRAP
(#13414)[jest-mock]
Fix mocking of getters and setters on classes (#13398)[jest-reporters]
Revert: Transform file paths into hyperlinks (#13399)[@jest/types]
Infer type of each
table correctly when the table is a tuple or array (#13381)[@jest/types]
Rework typings to allow the *ReturnedWith
matchers to be called with no argument (#13385)[*]
Update @babel/*
deps, resulting in slightly different stack traces for each
(#13422)[jest-runner]
Do not instrument v8 coverage data if coverage should not be collected (#13282)FAQs
Unknown package
The npm package jest-environment-node receives a total of 15,199,290 weekly downloads. As such, jest-environment-node popularity was classified as popular.
We found that jest-environment-node demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 3 open source maintainers collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Security News
ESLint has added JSON and Markdown linting support with new officially-supported plugins, expanding its versatility beyond JavaScript.
Security News
Members Hub is conducting large-scale campaigns to artificially boost Discord server metrics, undermining community trust and platform integrity.
Security News
NIST has failed to meet its self-imposed deadline of clearing the NVD's backlog by the end of the fiscal year. Meanwhile, CVE's awaiting analysis have increased by 33% since June.