Code Coverage != Functional Coverage

To reach 100% testing coverage is a dream for many teams. The metric used is code coverage for tests, but is that enough? Unfortunately not. Code line coverage is not the same as functional coverage. And it is full functional coverage that really matters in the end. Look at a simple method that formats a… Continue reading Code Coverage != Functional Coverage

Adding an Overload is a Breaking Change

Adding functionality to a library, without touching the existing code should be safe for clients, shouldn’t it? Unfortunately not, adding another overload to a library can be a breaking change. It might work when the library is updated, but suddenly break when the client is recompiled – even though no code was changed. That’s nasty,… Continue reading Adding an Overload is a Breaking Change

My Favourite Visual Studio Key Bindings

Working with code, there are some operations that are repeated many times every day, hour or even minute. Knowing (and creating) shortcut keys for those operations not only saves time, but keeps focus on the code. Reaching for the mouse might not take much longer time, but it switches the brain over to mouse-control mode… Continue reading My Favourite Visual Studio Key Bindings

Writing an Owin Authentication Middleware

Owin and Katana offers a flexible pipeline for external authentication with existing providers for authentication by Google, Facebook, Twitter and more. It is also possible to write your own custom authentication provider and get full integration with the Owin external authentication pipeline and ASP.NET Identity. Anatomy of an Owin Authentication Middleware For this post I’ve… Continue reading Writing an Owin Authentication Middleware