Bounded: body position 0 is file offset 16; write past the header rejected: True
Hashing: 32-byte digest matches a one-shot hash of the same bytes
Encrypted: ciphertext length 36 equals plaintext length; offset 20 decrypts to klmno
ReadOnly rejected a write: True; stream still open after its non-closing view was disposed: True
Fragmented: 10 bytes stored in 3 fragments of 4 bytes
