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9 days agoUnit tests are good IMO, but integration tests are also important. Unit tests are too discrete and don’t expose system wide issues that cross the boundaries of what you’re testing at the unit level. Examples: performance, stability, memory leaks, bugs that are caused by how multiple components interact with each other, etc.
The other thing is that I think people use tests to give a false sense of security. Tests cannot expose issues that aren’t explicitly covered by testing. Design validation is still important and people tend to overlook that because of the false sense of security they get from seeing a test suite pass.
Yeah, I reflected on your comment for a bit and I can see what you’re saying. All software uses dependencies, but how they are shipped is different for a lot of languages. If we take an extreme example, Go has a lot of the same microdependencies that Python, JS, etc. have, (probably a lot more than Python even), but since programs are usually compiled into a standalone binary, you never think about them as a user. Interpreted languages on the other hand tend to not do this because they’re not compiled, and when you’re installing a dependency, you’re often installing the source code itself, rather than a shared library or .jar like you would in C++ or Java.
A lot of people do complain about virtual environments though, and while I don’t personally have a problem with them, I do wonder why nobody uses bundlers in Python. It seems that something like this already exists, but it doesn’t seem to be widely adopted or used for all the complaints I hear about virtual environments and such.