I am getting this exception when I run the tests:

It seems that it does not recognize my CRS even though it starts exactly with the suggested string.
I believe the issue lies here.
In this line you are checking the CRS against http://www.opengis.net/def/crs/EPSG with EPSG in capital letters. And right bellow you suggest that it should be "starting with http://www.opengis.net/def/crs/epsg"

Shouldn't both capital and lower case letters be accepted?