fix style and tests

src/main/kotlin/io/emeraldpay/dshackle/rpc/SubscribeNodeStatus.kt

@@ -27,7 +27,9 @@ class SubscribeNodeStatus(
         req.flatMapMany {
             val knownUpstreams = ConcurrentHashMap<String, Boolean>()
             // send known upstreams details immediately
-            val descriptions = Flux.fromIterable(multistreams.all().flatMap { multiStream ->
+            val descriptions = Flux.fromIterable(
+                multistreams.all()
+                    .flatMap { multiStream ->
                         multiStream.getAll().map { up ->
                             NodeStatusResponse.newBuilder()
                                 .setNodeId(up.getId())
@@ -35,18 +37,24 @@ class SubscribeNodeStatus(
                                 .setStatus(buildStatus(up.getStatus(), up.getHead().getCurrentHeight()))
                                 .build()
                         }
-            })
+                    }
+            )
 
             // subscribe on head/status updates for known upstreams
-            val upstreamUpdates = Flux.merge(multistreams.all().flatMap { ms ->
+            val upstreamUpdates = Flux.merge(
+                multistreams.all()
+                    .flatMap { ms ->
                         ms.getAll().map { up ->
                             knownUpstreams[up.getId()] = true
                             subscribeUpstreamUpdates(ms.chain, up)
                         }
-            })
+                    }
+            )
 
             // subscribe on head/status updates for just added upstreams
-            val muliStreamUpdates = Flux.merge(multistreams.all().map { ms ->
+            val muliStreamUpdates = Flux.merge(
+                multistreams.all()
+                    .map { ms ->
                         ms.subscribeAddedUpstreams()
                             .distinctUntilChanged {
                                 it.getId()
@@ -60,10 +68,12 @@ class SubscribeNodeStatus(
                                             .setDescription(buildDescription(ms.chain, it))
                                             .setStatus(buildStatus(it.getStatus(), it.getHead().getCurrentHeight()))
                                             .build()
-                            ), subscribeUpstreamUpdates(ms.chain, it)
+                                    ),
+                                    subscribeUpstreamUpdates(ms.chain, it)
                                 )
                             }
-            })
+                    }
+            )
 
             Flux.concat(descriptions, Flux.merge(upstreamUpdates, muliStreamUpdates))
         }
@@ -96,14 +106,16 @@ class SubscribeNodeStatus(
     private fun buildDescription(chain: Chain, up: Upstream): NodeDescription.Builder =
         NodeDescription.newBuilder()
             .setChain(Common.ChainRef.forNumber(chain.id))
-            .addAllLabels(up.getLabels().flatMap { labels ->
+            .addAllLabels(
+                up.getLabels().flatMap { labels ->
                     labels.map {
                         BlockchainOuterClass.Label.newBuilder()
                             .setName(it.key)
                             .setValue(it.value)
                             .build()
                     }
-            })
+                }
+            )
             .addAllSupportedMethods(up.getMethods().getSupportedMethods())
 
     private fun buildStatus(status: UpstreamAvailability, height: Long?): NodeStatus.Builder =

src/test/groovy/io/emeraldpay/dshackle/test/MultistreamHolderMock.groovy

@@ -86,6 +86,11 @@ class MultistreamHolderMock implements MultistreamHolder {
         return upstreams.containsKey(chain)
     }
 
+    @Override
+    List<Multistream> all() {
+        return upstreams.values().toList()
+    }
+
     static class EthereumMultistreamMock extends EthereumPosMultiStream {
 
         EthereumCachingReader customReader = null