From 8f838166a86be1a4516b2764906f106d77ee3e66 Mon Sep 17 00:00:00 2001
From: teor <teor@riseup.net>
Date: Wed, 11 Nov 2020 00:45:53 +1000
Subject: [PATCH] Make ExpandedDifficulty Debug byte order match Hash

Bugfix on PR #1171.
---
 zebra-chain/src/work/difficulty.rs               | 2 +-
 zebra-chain/src/work/difficulty/tests/vectors.rs | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/zebra-chain/src/work/difficulty.rs b/zebra-chain/src/work/difficulty.rs
index 6443e2b2..846583eb 100644
--- a/zebra-chain/src/work/difficulty.rs
+++ b/zebra-chain/src/work/difficulty.rs
@@ -98,7 +98,7 @@ impl fmt::Debug for ExpandedDifficulty {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         let mut buf = [0; 32];
         // Use the same byte order as block::Hash
-        self.0.to_little_endian(&mut buf);
+        self.0.to_big_endian(&mut buf);
         f.debug_tuple("ExpandedDifficulty")
             .field(&hex::encode(&buf))
             .finish()
diff --git a/zebra-chain/src/work/difficulty/tests/vectors.rs b/zebra-chain/src/work/difficulty/tests/vectors.rs
index a906b8e3..9379c88a 100644
--- a/zebra-chain/src/work/difficulty/tests/vectors.rs
+++ b/zebra-chain/src/work/difficulty/tests/vectors.rs
@@ -36,7 +36,7 @@ fn debug_format() {
     );
     assert_eq!(
         format!("{:?}", ExpandedDifficulty(U256::one())),
-        "ExpandedDifficulty(\"0100000000000000000000000000000000000000000000000000000000000000\")"
+        "ExpandedDifficulty(\"0000000000000000000000000000000000000000000000000000000000000001\")"
     );
     assert_eq!(
         format!("{:?}", ExpandedDifficulty(U256::MAX)),
@@ -44,6 +44,7 @@ fn debug_format() {
     );
 
     assert_eq!(format!("{:?}", Work(0)), "Work(0x0, 0, -inf)");
+    assert_eq!(format!("{:?}", Work(1)), "Work(0x1, 1, 0.00000)");
     assert_eq!(
         format!("{:?}", Work(u8::MAX as u128)),
         "Work(0xff, 255, 7.99435)"