Are you asking about the process for the weaving, or the process for the software? For the weaving, it's straightforward to test that everything was woven corre

Are you asking about the process for the weaving, or the process for the software? For the weaving, it's straightforward to test that everything was woven correctly, by verifying the values in all the memory locations. As for writing the software, they had detailed specifications, review of changes, design reviews, and lots of testing. Some information is here: https://history.nasa.gov/computers/Ch2-6.html https://history.nasa.gov/computers/Ch2-6.html