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What Testers can learn from Developers – and vice versa

When creating software, there is a constant iteration between development and testing. The below figure visualizes this phenomenon. During development, new increments of the produced software are created, which are verified via testing. Defects found in this testing phase are

Illustration good vs. bad unit tests
Good Unit Tests VS Bad Unit Tests (with C# and NUnit Examples)

In this post, I describe the difference between good and bad unit tests based on some examples created in C# using the NUnit unit testing framework.For these examples, test cases are created based on the following code unit (download example

Illustration - man sitting in front of laptop, big screens with code in the background
The AAA Test Pattern explained with C# and NUnit

Patterns enable code quality also for unit tests. Using the same structure in all of your tests saves most of your time in unit testing on the long run, by helping you and others easily understand the content of test

Illustration checklist
A Checklist for Assessing the Quality of your Unit Tests

In this post, I present a checklist that you can use to assess the quality of your unit tests (regardless of the used language or unit testing framework). The checklist is thereby divided into three parts. The Test Suite checklist

Illustration People testing
Why you shouldn’t write a single unit test, before you know how to do unit testing right

Here are some thoughts that I wanted to put out in the world on why we we currently fail to implement unit testing in practice, and why we should learn how to implement it right before actually writing a single

Illustration 5 Learnings from 1.000 test cases
5 Learnings from writing 1.000 test cases as a c# test automation expert

In my three years as a consultant in software test automation for c#, I’ve written a lot of test cases. These are my top 5 learnings. 1. A failing test doesn’t necessarily mean that you found a bug in the

Illustration Frontend Tests
Automated Frontend Tests

We now look at which tools can be used to support the creation of automated test cases. For executing test cases on a frontend, the created code actions must be converted to be executed on the frontend and mapped to

Illustration Stages of test automation
Stages of Test Automation

In this article, we introduce three different stages of Test Automation, as originally proposed by Mike Cohn [1], and give characteristics of test cases in each stage. As naming and definition of the individual stages differ in the literature, we

Programmer standing in front of laptop and screen and thinking about logic
Models – theory vs. reality

In a previous article, I have discussed the power of models in software engineering. In theory, using models solves the most fundamental problem in software engineering: the communication between business (e.g. client, project manager, business developer) and engineering (e.g. developers,

Test Automation
Barriers and limits in test automation

The potential of Test Automation is huge. Dependencies to requirement specifications change requests and project deadlines significantly impact the success of Test Automation. Insufficient fulfilment of prerequisites often provides huge barriers to the automated execution of test cases in software

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