A Surprising Injection

So, I owe Jim an apology. He’d written a working mockito and JUnit test, and I told him in review…

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Fuzzy Assertions

As discussed in other Test Smells, like Trail by Competitive Calculation, and It Passed Yesterday, it’s very easy to create…

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To Infinity (Streams) and Beyond!

Java allows you to process data in collections or streams. It’s very easy to think of streams as a technique…

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Test Setup is Somewhere Else

What to Expect of a Test Case It prepares some scenario It executes the system under test It makes some…

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Hidden Meaning

Good tests should: Run quickly Fail meaningfully Document the system under test Explain themselves when they go wrong Consider the…

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Name Parameters In Tests?

As discussed in What are We Testing Again? from the Test Smells, making the test code explain its test case…

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The First and Last Rites

Let’s look at another test smell. Consider the following tests: @Test public void connectionWorks() { database = openDatabase(); database.healthCheck(); database.close();…

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It’s Too Noisy

I want to look at a general case of noise in code. To do so, let’s look at how to…

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Missing Parameterized Test

Sometimes, what you need is a parameterized test. They do the job of representing a single way of testing with…

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