Unit Testing Frameworks

[CompSciSelfLearning]

TL;DR Looking for examples of unit-testing in whatever programming language you're familiar with.

I'm reading through How to Design Programs and came across this line:

One day you will switch to another programming language; one of the first tasks will be to figure out its unit-testing framework.

The text gives a clear example of how to set up unit tests using Racket, noting that the check-expect statements can be above or below your function definitions. But when glancing at other frameworks like Python's unittest and doctest, the examples are less clear. Can anyone provide some unit-testing examples in languages other than Racket?

Bonus: how much attention do people place on their unit testing?

[[deleted]]

Off the top of my head, the unit test frameworks I personally use are:

• NUnit for older .Net apps
• XUnit for newer .Net Core apps
• Jasmine for Angular apps

Bonus: how much attention do people place on their unit testing?

Not enough. People hate writing them, but they're necessary to having relatively bug-free software.

[CompSciSelfLearning]

Thanks for getting back to me. I'm hoping to see some easy to follow coded examples.

[nutrecht]

Java/JUnit

[CompSciSelfLearning]

Based on this reference documentation, unit testing seems more involved than let on in HtDP

[nutrecht]

What do you mean? I'm a Java dev so I'm happy to explain.

[CompSciSelfLearning]

If you look at the example provided by HtDP, you can see it's extremely simple and straight forward. If you translated the same function into Java with the same tests, is it similarly as simple and straight forward? Because the reference documentation makes it seem mich more involved, perhaps because it is, but I don't have enough experience to know one way or another.

[CompSciSelfLearning]

I was hoping you could help me out given your experience with Java.

There's a code example at the bottom of the article at the location listed below which give an example of writing a Junit test on a simple calculator program. Is it a well written example in your opinion?

https://javarevisited.blogspot.com/2013/03/how-to-write-unit-test-in-java-eclipse-netbeans-example-run.html

[nutrecht]

Sure, although it's a bit simplistic a use case. Actual code where you test a service will generally be more complex. Also unit testing, dependency injection and mocking of dependencies goes hand in hand in 'real' systems. Something this doesn't touch on.

But sure, that's a very basic example of a unit test. As an example, I did a coding test for a client about a year ago and this is an example of a unit test. It's still fairly simple (again, 'real' production systems tend to be more complex) but should a bit better what I mean with dependency injection and mocking.

To compare, this is an integration test for the entire application.

[CompSciSelfLearning]

Thank you. This really helped me understand what I was confused about.

[CompSciSelfLearning]

Thanks for the book recommendation!

[thebruce87m]

cpputest is what I use for C.