[Someone]

The "unit testing" of that standard (https://s3.amazonaws.com/akitaonrails/files/std1008-1987.pdf) is a process that is quite a bit heavier than what we now understand unit testing to be.

In particular, it assumes the existence of detailed requirements documentation, and requires excessive documentation on tests and their results.

One thing that makes it an evolutionary step towards modern unit testing is that it explicitly states that developers may do the unit testing.