When you’re writing code inPython, it’s important to make sure that your code works as expected. One of the best ways to do this is by using unit tests, which help you check if small parts (or units) of your code are working correctly. In this article, we will learn how to wri...
Unit testing is the technique in which individual units are analyzed for errors to make your code stable and future-proof. These units may be individual functions, a complete class, or an entire module. In most cases, these units have no dependencies on the other part of the code. It is ...
Today I'm starting a new series of articles about a topic that does not get a lot of coverage: how to write Python unit tests. Unlike other testing tutorials, I'm going to focus on testing techniques more than on the testing tools themselves. The idea is that in each part of this ...
Pythonhas a reputation as being a simple language to work in, but that doesn’t always extend to the unit tests; some things are just really awkward to write tests for. Perhaps the function you’re testing requires you tomockout a bunch of things, or perhaps it outputs a complex data s...
How to make mistakes in Python Experienced programmer Mike Pirnat shares some of his most memorable blunders. By avoiding these missteps, you’ll be free to make truly significant mistakes—the ones that advance the art of programming.
Consider the same Python function,divide, which performs division but raises aValueErrorwhen attempting to divide by zero. This time, we will use thepatchdecorator to mock thedividefunction and make it raise aValueErrorduring testing. # File: calculator.pydefdivide(a,b):ifb==0:raiseValueError(...
We are still enjoying using the Python plugin 2.10.0 in IDEA 12.0.1 on Mac OS X 10.6.8. I'd appreciate your help figuring out how to enable a feature I've seen working before, but can't get to work again: Getting this context menu to show:...
A Python doctest is written as though it is a comment, with a series of three quotation marks in a row —"""— at the top and bottom of the doctest. Sometimes, doctests are written with an example of the function and the expected output, but it may be preferable to also include a...
Trying to make changes without a test means you are incurring technical debt for the future and making teammates pay for it. In this case, if my goal is making changes to the computations, I would figure out how to mock the data connectors and start writing tests. ...
you just need to copy the unit test directory (average/ that is in tests/) to create a new unit test. The Makefile in this unit test directory sets up a number of variables (including COMPONENT_NAME, which you will want to change for your test) before running the MakefileWorker.mk fi...