A tutorial on how to mock Firebase database and authentication features using Jest for unit testing in JavaScript/Node.js.
A guide on configuring Jest to work with Babel Module Resolver aliases for cleaner imports in tests.
A guide to fixing the 'not wrapped in act(...)' warning in React component tests, covering class and function components.
Explains why you should make your tests fail to ensure they are actually testing the intended functionality and not giving false confidence.
A guide to setting up and writing component tests for Svelte applications using Jest and the Svelte Testing Library.
A tutorial on testing Axios API calls in Jest, including mocking requests and handling success/error cases with code examples.
A guide to mocking the JavaScript Date object in Jest for consistent testing, covering timezone configuration and mocking Date.now.
A tutorial on testing React components connected to a Redux store using Jest and Redux Mock Store.
A tutorial on using Jest snapshot testing to capture and compare the output of a React component before and after a state change.
A guide to using shallow rendering in Jest snapshot tests to avoid large outputs and duplicated test setups for React parent components.
A tutorial series on setting up testing libraries and writing unit, integration, and E2E tests for React components.
A tutorial on setting up and using Enzyme with Jest for unit and integration testing of React components.
A tutorial on setting up and using Jest to test React components, including assertions and snapshot testing.
A developer shares their experience speaking at DinosaurJS and React Loop conferences, discussing technical talks on Babel 7 and migrating to React.
A guide to improving Jest test clarity by refactoring assertions and using custom error messages for better debugging.
An introduction to code coverage, explaining how to read it and use it effectively in your testing workflow, with practical examples using Jest.
A tutorial on unit testing a Vue.js component using Vue Test Utils and Jest, covering setup, best practices, and test implementation.
A guide on integrating the Jest testing framework into an Angular application and library, replacing the default Karma runner.
A guide to common pitfalls and best practices for testing asynchronous code using the Jest framework in JavaScript.
A guide on achieving test isolation in React components to improve test reliability and prevent shared mutable state issues.
