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> The condition is, though, that I need to be able to quickly run the program to validate just all of it to work. That's a condition for all TDD. > I know the

> The condition is, though, that I need to be able to quickly run the program to validate just all of it to work. That's a condition for all TDD. > I know there's testing frameworks, although it seems more of an eclectic mess than Java If you look at the test suites for popular libraries like numpy, django, airflow it's mostly `pytest`, `unittest` (part of the standard library), and `nose`. > where testing and mocking is just a little harder to do... Mocking is actually pretty easy to do in python using pytest.monkeypatch or unittest.mock. Compared to mocking in a strongly typed language like C++ (and I assume Java) if an object you're mocking implements a particular interface, you would only have to mock out the parts that get exercied by the codepath in the tests you care about.

sverhagen 7y ago
> That's a condition for all TDD. I was saying, run the program, not run a test in a larger suite. > > where testing and mocking is just a little harder to do... You were quoting me trying to say that mocking out system interactions, such as I /O, things with external side-effects, tends to be harder, regardless of Python versus Java. > Mocking is actually pretty easy to do in python Let's disagree. As a Java developer, doing some Python takes me a moderate amount of online searching, unless I'm writing the test code, during which the online searching and associated trial and error skyrockets. Just my modest experience.