Here are some best practices for testing and debugging applications built using Go:
Write tests early and often: Writing tests early in the development process can help catch bugs early and ensure that new code does not break existing functionality.
Use the testing package: Go provides a built-in testing package that makes it easy to write and run tests. Use this package to write unit tests, integration tests, and end-to-end tests.
Use a debugger: Go has a built-in debugger called Delve, which can help you identify and fix bugs in your code.
Write simple and modular code: Complex code is difficult to debug and maintain. Keep your code simple and modular to make it easier to debug.
Use logging and tracing: Logging and tracing can help you identify and diagnose problems in your application. Use the built-in logging package or a third-party tracing package to add logging and tracing to your application.
Use code reviews: Code reviews can help catch bugs and ensure that code is well-designed and follows best practices.
Use profiling tools: Profiling tools can help you identify performance bottlenecks in your application. Use the built-in profiling tools or a third-party profiling tool to identify and optimize slow code.
Test in production-like environments: Testing your application in production-like environments can help you identify problems that may not appear in test environments.
Use error handling and panic recovery: Proper error handling and panic recovery can help prevent crashes and make your application more resilient.
Keep dependencies up to date: Keep your application's dependencies up to date to ensure that you are using the latest and most secure versions of libraries and packages. Use a tool like Go Modules to manage dependencies.