Intermediate unit test

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Next: Runtime evaluation

Required course material for the lesson

Powerpoint: Testing
Online: pytest documentation
Resource: Unit test - start of reverse polish notation class
Blog: On testing, by the founder of StackExchange.

Subjects covered

Unit test using pytest framework.
Files, test data
Setting up real projects

Exercises to be handed in

You should make a special folder for the exercises. I will refer to my special folder as unittest in these exercises. You will also see some __pycache__ folders appear in places. This is Pythons cache for "compiled" programs. It is safe to ignore and also to delete, because it may become outdated.

1. Follow the file structure of having a code (or src) folder for programs, a test folder for tests, and now a testdata folder for files containing test data. Now make unit tests and appropriate test data files for your fasta class from last week. In this exercise you just need to make unit test for the method load. You need to hand in both tests and test data.
   
   
2. Add unit tests for the method save in your fasta class. Hand in same way as above.
   
   
3. Add unit tests for the method delete in your fasta class. Use a fixture for setting up a test set for you deletion tests. Hand in same way as above.
   
   
4. Change your unit test setup of your fasta class to the package structure. That includes the correct folder structure, pyproject.toml and __init__.py file.
   
   

I would not be surprised if you find errors in your fasta class based on these tests. I found flaws in my code.

Exercises for extra practice

1. Add unit tests for all methods in your fasta class. That will be a bit of work.