Fix unit tests

Author: przemekwitek

server/src/main/java/org/elasticsearch/action/admin/indices/alias/IndicesAliasesRequest.java

@@ -536,6 +536,7 @@ public String toString() {
                     + ",indexRouting=" + indexRouting
                     + ",searchRouting=" + searchRouting
                     + ",writeIndex=" + writeIndex
+                    + ",isHidden=" + isHidden
                     + "]";
         }
 
@@ -553,12 +554,13 @@ public boolean equals(Object obj) {
                     && Objects.equals(routing, other.routing)
                     && Objects.equals(indexRouting, other.indexRouting)
                     && Objects.equals(searchRouting, other.searchRouting)
-                    && Objects.equals(writeIndex, other.writeIndex);
+                    && Objects.equals(writeIndex, other.writeIndex)
+                    && Objects.equals(isHidden, other.isHidden);
         }
 
         @Override
         public int hashCode() {
-            return Objects.hash(type, indices, aliases, filter, routing, indexRouting, searchRouting, writeIndex);
+            return Objects.hash(type, indices, aliases, filter, routing, indexRouting, searchRouting, writeIndex, isHidden);
         }
     }
 

x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/ml/utils/MlIndexAndAliasTests.java

@@ -157,7 +157,7 @@ public void testCreateStateIndexAndAliasIfNecessary_WriteAliasAlreadyExistsAndPo
         assertThat(
             indicesAliasesRequest.getAliasActions(),
             contains(
-                AliasActions.add().alias(TEST_INDEX_ALIAS).index(FIRST_CONCRETE_INDEX),
+                AliasActions.add().alias(TEST_INDEX_ALIAS).index(FIRST_CONCRETE_INDEX).isHidden(true),
                 AliasActions.remove().alias(TEST_INDEX_ALIAS).index(LEGACY_INDEX_WITHOUT_SUFFIX)));
     }
 
@@ -175,7 +175,7 @@ private void assertMlStateWriteAliasAddedToMostRecentMlStateIndex(List<String> e
         IndicesAliasesRequest indicesAliasesRequest = aliasesRequestCaptor.getValue();
         assertThat(
             indicesAliasesRequest.getAliasActions(),
-            contains(AliasActions.add().alias(TEST_INDEX_ALIAS).index(expectedWriteIndexName)));
+            contains(AliasActions.add().alias(TEST_INDEX_ALIAS).index(expectedWriteIndexName).isHidden(true)));
     }
 
     public void testCreateStateIndexAndAliasIfNecessary_WriteAliasDoesNotExistButInitialStateIndexExists() {