While trying to get a better understanding of pytest fixtures, I noticed a little problem: I could not see the output of the print() statements in my code. Let’s look why this happens and how we can change it. This post is part of my journey to learn Python. You can find the other parts …
Flask is a great framework, but before I continue with more elaborate parts I need to make sure that the code I wrote until now keeps working. Let’s look how we can test our code in Python. This post is part of my journey to learn Python. You can find the other parts of this …
Visual regression testing is the last part I write about the NDC Oslo 2020 workshop Front End Web Fundamentals hosted by Amy Kapernick (@amys_kapers). This kind of testing is a nice extension to my testing toolbox and can help you to get an alarm when you unintentionally change your user interface. How does visual …
We use Selenium and Firefox to verify our BDD specifications. That combination worked well until the last update to Firefox 75. Instead of our application on the developer machine, Firefox only showed us the “Your connection is not secure error” overlay. We depend on fast feedback cycles and needed a solution quickly. I found some …
One of the most important concepts of object-oriented design is encapsulation. You try to hide all the internal things of a class from the other developers and only offer them a subset of functionality to use. You can achieve this by setting an appropriate access modifier for your methods and classes: public: The type or …
Behavior-driven development (short BDD) is all about examples. They are used to explain what should happen when certain events occur and what exactly the meaning of a certain requirement is. So far all is simple and straight-forward. The challenges come with writing those examples. There are different ways to express the same ideas and not …
The SSMS Tools Pack created by Mladen Prajdić is a great extension for the SQL Server Management Studio. In this post I will explain how you can use it to create test data from a small subset of your production database. From a bug in production… Bugs happen, especially when complex data is involved. …
Suddenly, NUnit stopped working. We were in the middle of our refactoring, moved code around and ended up with all our tests being ignored. We rebuild the solution – no errors detected. We run our application – no problems at all. We even rebooted the machine. Everything worked except our tests: There was a little …
Exploratory testing is a great way to find bugs of any sorts. However, after an hour of testing all possible edge cases you don’t know what you tried and what not. Rapid Reporter is a great helper to keep track of your activities. You can download the executable here and run it right away – …
I am currently learning the xUnit.net framework as part of a new project I work on. For the last years I used NUnit for my unit and integration tests. Conceptually those two libraries aren’t that different. However, the naming of attributes and what is possible in sharing setup & clean-up code makes it worth to …