This guide demonstrates setting up automated code coverage reporting for Next.js applications. It walks through configuring Jest and React Testing Library for interaction tests, integrating Coveralls to track coverage metrics over time, and automating the entire workflow with CircleCI. The tutorial includes practical examples using a Todo list app, shows how to enforce coverage thresholds to maintain code quality, and explains how to configure CircleCI pipelines to automatically run tests and upload coverage reports whenever code changes are pushed to GitHub.
Table of contents
This tutorial covers:PrerequesitesCloning a Next.js projectSetting up Jest for testing and coverageIntegrating Coveralls for code coverage reportingAutomating testing and coverage reporting with CircleCISetting up the project on CircleCISimulating coverage failureConclusionSort: