How to Mock useHistory Hook in Jest: A Complete Guide for React Router v5.1.2 with TypeScript

DevelopmentLeave a comment

Introduction: Welcome to our comprehensive guide on mocking the useHistory hook in Jest for React Router v5.1.2 with TypeScript. If you’ve encountered the error “TypeError: Cannot read property ‘history’ of undefined” while running unit tests, you’re in the right place. In this article, we’ll walk you through the process of mocking the useHistory hook to…

Efficiently Mock TypeORM Connections in Your Jest Unit Tests: A Comprehensive Guide to Improving Test Performance and Reliability

DevelopmentLeave a comment

In this blog post, we will discuss a common issue faced by developers when trying to mock TypeORM connections using Jest: issue #5751. We’ll explore different methods to efficiently mock connections, improve test performance, and ensure that your tests are reliable, all while ranking high in search engines with unique and easy-to-rank keywords. Let’s dive…