[ipnon]

This speaks to the artfulness of testing, as a discipline of programming in general. There is no science of testing. Testing well is a skill learned over decades, as in the case of the author.

Testing is a fraught activity, too often leaving stakeholders without confidence, and leaving programmers feeling like they are just going through the motions. Yet there is clearly some value to testing; who prefers untested code to the tested?

Our lack of definitive answers regarding how to best test should not discourage us from testing. We should instead appreciate the inexactness of good testing, and seek to develop a fine sensitivity for how to test our software well.