Sometimes, tests imitate code, and not in a good way. Here’s our tested code: public String encode(String word) { String result = word + word.length(); return result; } And here’s our test: @Test public void howItsDone() { Encoder enc = Read more…
You’re testing the right thing, and the test passes, and everything is cool. Or is it? Check out this test: @Test public void encodeString_sizeAtEnd() { Encoder enc = new Encoder(); String result = enc.encode(“hello”); assertEquals(“hello5”, result); } This test looks Read more…
Anti-patterns are patterns with negative consequences. In this series I’m going to tackle those patterns, explain what they signify in terms of risks, and what to do instead. Let’s look at a pattern common to people who start out on Read more…
Last time we’ve started talking about how to approach TDD in real, complex systems. While plain vanilla TDD assumes nothing about the world around our component, in real life, there are constraints we need to relate to. Where we stopped, Read more…
TDD comes from the world of unit testing. It’s optimized for small pieces of code; small increments of functionality. BDD takes the test-first approach, adds functional and user semantics and tries to follow the same formula for the whole software. Read more…
That’s right! It’s been a while, but lots of content going into the new version, which you can download right now. What’s added? Two new chapters: Testing strategy – how to think about testing (and unit testing) a feature. TDD Read more…
Other awesome posts in the series: If the code we want to test is highly-decoupled from its dependencies, we probably don’t need to do anything to it. But when we have a medium-big ball of mud things change. There are Read more…
It used to be. Somewhere, squeezed between the end of development and release. But then things changed, because they had to. We’re testing product ideas, way before there’s one line of code. We’re testing the code as it’s being written, Read more…
