Method skip_if_blake2_not_builtin

Lib/test/test_hashlib.py:810–814

(self, name, skip_reason)

          "de0ff244877ea60a4cb0432ce577c31beb009c5c2c49aa2e4eadb217ad8cc09b")

    def skip_if_blake2_not_builtin(self, name, skip_reason):
        # blake2 builtins may be absent if python built with
        # a subset of --with-builtin-hashlib-hashes or none.
        if "blake2" in name and "blake2" not in builtin_hashes:
            self.skipTest(skip_reason)

    def check_blake2(self, constructor, salt_size, person_size, key_size,
                     digest_size, max_offset):