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
From time to time I get the feeling that I have too much free time and so I set myself and look for new challenges, and although the last year has been challenging to all of us I've still found myself committed to create another unit testing course for Pluralsight. This time it's unit testing … Continue reading New Pluralsight course – Unit Testing C Code in CLion
The builder pattern is one of the more useful patterns out there when creation unit tests. Instead of having a huge initialization such as: @Test void validateUser_userNameIsEmpty_returnFalse(){ var user = new User(); user.setId("id-1"); user.setName(null); user.setPhoneNumber("555-1234"); // additional user initialization boolean result = userService.validate(user); assertFalse(result); } You can instead create a simple user builder object for … Continue reading Easily create builders for your tests using Intellij IDEA
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
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
Next month is going to be a busy month for me - I'm starting it with .NET developer days in Warsaw where I'm going to give three talks in two days. I'll speak on my all time favorite topic of unit testing in three different sessions -Â I hope I'll get to see some of beautiful … Continue reading Speaking engagements: October 2017
I have been "living" in the C++ world since the very beginning (of my career). But lately I've noticed a rising interest in C++ unit testing and even got to speaking about it in NDC Oslo. Â But there's more to it than testing 10 year old C++ legacy code - it is my opinion that … Continue reading Getting started with C++ unit testing
My latest course: Advanced C++ Mocking Using Google Mock was published during the weekend. After finishing my very first Pluralsight course I knew I want to author another one. I've been working with C++, Java and .NET developers for the last five years, teaching about clean code, design patterns and unit testing. I've seen good developers struggle with TDD, … Continue reading New Pluralsight course: Advanced C++ Mocking Using Google Mock
It seems as if causing DateTime.Now to return another value has become the demo to show when demoing an unconstrained Mocking framework. It’s easy to show and needed in many unit tests – unless you want your tests to be affected by time – trust me and you don’t. That’s why I was amazed to … Continue reading Faking DateTime using Microsoft Fakes seems to be broken
