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Recently I had to write some tests for a piece of JavaScript code that used window.location. This left me trying to figure out how to mock the window.location so that I could pass in dummy data and ensure that the data I got back was what was expected. Here was how I managed to solve the issue.

Next.js offers a feature called Incremental Static Regeneration (ISR) that allows you to generate a static page when the page is first visited, rather than generating a static copy at build time. This is a really handy feature as it allows you to reduce your build time, but still benefit from having a cache of a page generated so future visitors will have a faster response time.

Recently I wanted to write a test for a React component that uses axios to retrieve information from an API. To do this I had to mock jest, but I ran into some issues with the types as I was using typescript. This article explains how I managed to get it to work.