As far as I'm aware it's best practice to name a test class after the class it's testing. So if you're testing SomeClass you would name the test class SomeClassTest. We usually do this but in nucleotide-count we have NucleotideTest which test the class DNA. I suggest we:

1. Rename NucleotideTest to DNATest (or possibly Dna and DnaTest to make it more readable?)
2. Add this preference to the POLICIES doc

Do you agree with this @exercism/java?