unittests.md

There is this piece of code that is not yet covered by tests, and our product owner requested that we increase code coverage. Can you do it?

Three modes:

• easy
• normal
• hard

What do they check?

• easy: knowledge about tests in general, ability to test different execution paths, ability to handle exceptions, very basic creativity, simple unit testing
• normal: ability to write test cases for more than one object at the same time, more complex scenarios
• hard: mocking, dependency injection, functional testing

This question can be split into two phases:

• writing actual tests (few)
• listing possible test scenarios (i.e. “what scenarios would you write if you had to cover this code with tests?”)