f337dec2b1 hashes: Remove unnecessary feature guard from test (Tobin C. Harding)
0cea90d505 Test hashes honour Formatter::precision (Tobin C. Harding)
4bfb466bb9 Upgrade hex dependency (Tobin C. Harding)
f0558e8eb9 Use fmt_hex_exact (Tobin C. Harding)
6820f51408 hashes: Add fmt roundtrip tests (Tobin C. Harding)
e302e30e7c Import with super::* in unit test (Tobin C. Harding)
Pull request description:
Upgrade to use the newly released `hex` code.
- Patch 1: Does trivial preparatory cleanup
- Patch 2: Adds some unit tests to check we roundtrip hashes correctly (added because in the test PR I had the `Midstate` iml wrong and it was not being caught).
- Patch 3: Uses macro in place of `forward_hex` and `backward_hex` - needs concept review, I hacked this without understanding why the functions existed in the first place.
- Patch 4: Does the upgrade, I've attempted to make minimal changes, so there is room for a bunch of cleanups if/when this merges.
- Patch 5: Adds a unit test to verify that we can close#2494
- Patch 6: Removes unnecessary feature gate from unit test.
ACKs for top commit:
Kixunil:
ACK f337dec2b1
apoelstra:
ACK f337dec2b1
Tree-SHA512: 7913d1b3079cf5ba1b0e70f5c33e091c5ef1258026c8f27bbe8a050100bbc7622b6555d560b15be3b3d90d47ce873f137a73cf2d772108d2915fb30ed129bded
a124ff41c4