Consumption of ASCII-armored objects without CRC, or with failed CRC
We should add a new test suite, with a handful of ASCII-armored objects without CRC, or with a CRC line with a value that doesn't align with the underlying octet stream.
This probably matters for:
One additional test might include a malformed CRC line, but there are many different ways to make such a line malformed. So i'd start with just (a) missing CRC and (b) CRC with a different value than the expected value.