I had to read the C documentation and experimented quite a lot with IRB to get this where it is now (and the MRI documentation is pretty much lacking in this regard). I would have attempted to write a test, but I didn't know where to put it.
I'll still try to write one, but when I do so, where do I put it and how do I enable it?
Would a new file test/test_openssl_stub_bn.rb load on its own?
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