From 41b985ee0b221b011f733272b9667fad0601225d Mon Sep 17 00:00:00 2001
From: teor <teor@riseup.net>
Date: Wed, 30 Sep 2020 06:59:59 +1000
Subject: [PATCH] Block test vector comment updates

---
 zebra-test/src/vectors/block.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/zebra-test/src/vectors/block.rs b/zebra-test/src/vectors/block.rs
index 72a5bb8e7..9fcde69a5 100644
--- a/zebra-test/src/vectors/block.rs
+++ b/zebra-test/src/vectors/block.rs
@@ -17,8 +17,12 @@ lazy_static! {
 
     // Update these lists of blocks when you add new block test vectors to
     // this file
+    //
+    // We use integer heights in these maps, to avoid a dependency on zebra_chain
 
     /// Mainnet blocks, indexed by height
+    ///
+    /// This is actually a bijective map, the tests ensure that values are unique.
     pub static ref MAINNET_BLOCKS: BTreeMap<u32, &'static [u8]> = BTreeMap::from_iter(
         [
             // Genesis
@@ -57,6 +61,8 @@ lazy_static! {
     );
 
     /// Testnet blocks, indexed by height
+    ///
+    /// This is actually a bijective map, the tests ensure that values are unique.
     pub static ref TESTNET_BLOCKS: BTreeMap<u32, &'static [u8]> = BTreeMap::from_iter(
         [
             // Genesis