MARKUS OBERLEHNER

Unit tests are the perfect place for testing edge cases and multiple variations as well as complicated operations. For example, suppose we have a function for formatting prices. We might test what happens if we need to round the price to the next cent. Or that we add commas and decimal points correctly. We don't want to test all possible formatting variations in dedicated acceptance tests, but we can easily do this in a unit test... I have often experienced that many people perceive automated testing as an additional step-even worse: a further step at the end of the process. As a result, we do not benefit from the many advantages that automated testing offers us. On the contrary, tests performed at the end of the process tend to slow us down. Slower progress leads to more and more stakeholders questioning the merits of automated testing in general. Therefore, it is crucial to integrate testing into our process in a way that enables us to reap all the benefits and minimize the..