What Is A Harness, Demystified

One fine day a tiny laddie came and asked his dad: "Could you tell me, Daddy, what is good and what is bad?" V.V. Mayakovsky "What Is Good And What Is Bad" (1925), trans. Dorian Rottenberg From testing The word isn&rsquo;t new. Test harness 1 is a thirty-year-old term: the rig that runs the code under test, feeds it inputs, collects outputs, and says &ldquo;pass / fail&rdquo;. Swap &ldquo;code…