[Dlang Episode 102] unittest 2 of n - Test Techniques (Pure, Whitebox, Blackbox, __ctfe, more)

Published: 17 August 2024
on channel: Mike Shah

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►Lesson Description: In this lesson I show you some testing techniques in the D programming language. The unittest block again is a simple feature, but we can combine it with things that we have learned before, like the 'pure' attribute. A good unittest usually does not need state from the outside world, so making a unittest pure is a good idea. After this, I then talk about whitebox and blackbox testing, which informs us of how to write a test based on what knowledge we have of the implementation. Then I talk about using 'assertThrown' to capture if an exception is thrown. Finally, I reiterate that we can catch code that executes at compile time or run-time with assert and static assert (this gives a brief introduction to __ctfe). As always, share your interesting use cases with the community in the discussion below!

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