- one functional (fizzbuzz.js, luhn.js)
- one optimized (fizzbuzz_optimized.js, luhn_optimized.js)
- one modular (fizzbuzz_manual.js, luhn_manual.js)
- currently only the functional test is provided (test/fizzbuzz/fizzbuzz.js, test/luhn/luhn.js)
- add a test that matches the name of its test candidate
- test should run separately as well as in a suite