Testing in the Time of Time

Programmer tests - meaning those tests that we run between edits to estimate how many new mistakes we have added to the code - run eye blink fast.

Which means that the lifetime of an entity within our test scenario is an instant.

But the scenario that motivates our simulation often has measurable duration.

If this is to reflect in our design; if the test is to communicate this duration to its future maintainer, then the design of the test needs to imply measurable time.