These are, in turn, just taken from RFC 8032 and are all in
ed25519_tests.txt. But it's probably good to test non-empty inputs at
the EVP_PKEY layer too.
Change-Id: I21871a6efaad5c88b828d2e90d757c325a550b2a
Reviewed-on: https://boringssl-review.googlesource.com/16989
Reviewed-by: Steven Valdez <svaldez@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
Commit-Queue: Steven Valdez <svaldez@google.com>
CQ-Verified: CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org>