fix(rpc): validator_updates in block results might be explicit null

.changelog/unreleased/bug-fixes/1318-deserialize_block_results.md

@@ -0,0 +1 @@
+- `[tendermint-rpc]` - `validator_updates` in block results might be explicit null.

rpc/src/endpoint/block_results.rs

@@ -57,7 +57,7 @@ pub struct Response {
     pub end_block_events: Option<Vec<abci::Event>>,
 
     /// Validator updates (might be explicit null)
-    pub validator_updates: Vec<validator::Update>,
+    pub validator_updates: Option<Vec<validator::Update>>,
 
     /// New consensus params (might be explicit null)
     pub consensus_param_updates: Option<consensus::Params>,
@@ -104,7 +104,7 @@ where
             end_block_events: msg
                 .end_block_events
                 .map(|v| v.into_iter().map(Into::into).collect()),
-            validator_updates: msg.validator_updates,
+            validator_updates: Some(msg.validator_updates),
             consensus_param_updates: msg.consensus_param_updates,
         }
     }

rpc/tests/kvstore_fixtures/v0_34.rs

@@ -428,7 +428,7 @@ fn incoming_fixtures() {
                 assert!(result.end_block_events.is_none());
                 assert_eq!(result.height.value(), 10);
                 assert!(result.txs_results.is_none());
-                assert!(result.validator_updates.is_empty());
+                assert!(result.validator_updates.unwrap().is_empty());
             },
             "block_by_hash" => {
                 let result = endpoint::block_by_hash::Response::from_string(content).unwrap();

rpc/tests/kvstore_fixtures/v0_37.rs

@@ -427,7 +427,7 @@ fn incoming_fixtures() {
                 assert!(result.end_block_events.is_none());
                 assert_eq!(result.height.value(), 10);
                 assert!(result.txs_results.is_none());
-                assert!(result.validator_updates.is_empty());
+                assert!(result.validator_updates.unwrap().is_empty());
             },
             "block_by_hash" => {
                 let result = endpoint::block_by_hash::Response::from_string(content).unwrap();