One of my functions encrypts a string and one of my tests verifies that it took place. Naturally, strings like sldjf982389
are not recognized as a valid English word, so IntelliJ
complains.
If there a way to suppress these warnings without adding junk to the dictionary?
You can disable that in the Inspections menu. Click on the little green box at the top of source code, or navigate to File > Settings > Inspections, under the Project Settings divider. You can then untick the box shown below.