XP123

I’m building Betwist(tm), a word-finding game related to Boggle®.

We’ll look at how Arrange-Act-Assert (AAA) tests reflect the lifecycle of the objects we’re working with.

“Test Interface, Not Implementation” Perhaps you’ve heard the phrase “Test interface, not implementation”, or its relative, “Test behavior, not implementation”.

Two objects are coupled if changing one requires us to change the other.

Recently I needed to implement a drag-and-drop reordering, with persistence.

Suppose you want to represent a finite set of possibilities in a compact way.

I’m frustrated when unit tests run slowly.

Apple has introduced a new unit testing framework.

Our “geek” group tackled a problem a couple weeks ago, that one of us had heard suggested by Michael Feathers: given a sequence of numbers, tell how many non-zero runs it has.

Test-Driven Development (TDD) depends on assembling well-tested parts into a trustworthy whole.