Every developer knows the sinking feeling. A "simple" change breaks production. You realize there were no tests catching the edge case. Poor test coverage means longer debugging sessions, more production incidents, and that nagging anxiety every time you deploy. But here's the catch-22: going back to add tests to existing code feels like an overwhelming … Continue reading Using Kiro Subagents to Improve Test Coverage
Writing unit tests can be challenging, but there is one thing that can get you on the right track - the test name. If you manage to give your test a good name - you will write a good test. Unfortunately in some (read: many) unit testing frameworks the test name must be a valid … Continue reading Better tests names using JUnit’s display names generators
Does this sounds familiar to you: You come to work early(ish) in the morning - ready to apply a new technology you've just learnt about - just to find out that you can't. Your frustration grows as you understand that in order to use this "new and shiny" some adjustments must be made and what … Continue reading Using C# anonymous types to assert complex results in your unit tests
A while ago I've needed to count the number of events arriving from an external system and perform a specific task once a specific threshold has been reached. I've needed to count groups of events each group had it's own unique key. Although I might have been able to solve this problem using a dictionary … Continue reading How to count the number of event invocations using Rx
Every unit testing framework out there comes with a plethora of assertion methods - this is not necessarily a good thing. Instead of writing simple code a developer is forced to choose the correct assertion method from a seemingly endless list of methods, most of which look exactly the same! Having multiple overloaded methods with … Continue reading Assert.AreEqual in MSTest – done right
These days a .NET developer can create, test and deploy powerful software without breaking sweat. Writing a scalable, easily deployable performant ASP.NET Core microservice is easier than ever. The cool thing about using Docker is run automated tests against that soon-to-be-written service in an environment that was quickly created and immediately disposed once the testing … Continue reading Develop (and test) a dockerized, PostgreSQL backed, ASP.NET Core microservice in less than an hour
We've been developing .NET Core micro-services for a few months. Obviously we've decided to use Docker for Windows for deployment. Don't get me wrong I still find the experience amazing: Write code, and immediately debug your code running on Docker, it got to a point I no longer think about this amazing integration - write … Continue reading What to do when Visual Studio 2017 debugger won’t attach to Docker
It seems to me that there is a lot of talk about the new .NET Dynamic Languages lately. Because I wanted to see what the DLR was all about I will learn IronPython as part of my quest to learn new programming languages. Learning new language When I learn a new programming language I look … Continue reading Getting started with IronPython – Part 1 where to start
