python testing
Mocking in python tests: practical examples
What is mocking when it comes to python tests? Mocking is a way to simulate and control the behavior of functions or objects. Typically this type of control is necessary when unit testing code that deals with systems external to our own code. Why mock external systems? The main issue is with external systems unpredictability, we have limited control over the state of these external systems, making tests potentially very brittle. For example when code reads data from disk or a database. If there is a piece of functionality that reads and modifies files on disk we would have to…
Tim
Continuous testing python code with pytest: how to
In this article, we will look at simple and straightforward ways to set up continuous testing of python code for your local machine. After we complete these steps we will be able to get real time updates to test results in a terminal every time we save a code file. You can find an example project in the following repository. Why continuous testing The main motivator to having continuous testing is, instantly letting us know when a code change has broken some piece of functionality. Continuously testing python code will give us confidence that our code is robust. Furthermore, Continuous…
Automated testing for a Flask API: useful examples
In this article, we will look at simple, straightforward, and practical ways of automated testing of the flask REST API we built in this previous article. The completed project can be found in the following github repository: https://github.com/tmsdev82/collectors-items-at-rest Why continuous testing The main motivation for having continuous testing is that it instantly lets you know when a code change has broken some (piece of) functionality. It also lowers the bar to do major code refactoring, because we are assured that the tests are continuously running and if something goes wrong we immediately know about it before it becomes a problem.…