Add wire tests for get autoscaling decision objects

This commit adds wire serializing tests for the get autoscaling decision
request and response objects.

x-pack/plugin/autoscaling/src/main/java/org/elasticsearch/xpack/autoscaling/action/GetAutoscalingDecisionAction.java

@@ -51,6 +51,18 @@ public class GetAutoscalingDecisionAction extends ActionType<GetAutoscalingDecis
             return null;
         }
 
+        @Override
+        public boolean equals(final Object o) {
+            if (this == o) return true;
+            if (o == null || getClass() != o.getClass()) return false;
+            return true;
+        }
+
+        @Override
+        public int hashCode() {
+            return 0;
+        }
+
     }
 
     public static class Response extends ActionResponse implements ToXContentObject {
@@ -91,6 +103,19 @@ public class GetAutoscalingDecisionAction extends ActionType<GetAutoscalingDecis
             return builder;
         }
 
+        @Override
+        public boolean equals(final Object o) {
+            if (this == o) return true;
+            if (o == null || getClass() != o.getClass()) return false;
+            final Response response = (Response) o;
+            return decisions.equals(response.decisions);
+        }
+
+        @Override
+        public int hashCode() {
+            return Objects.hash(decisions);
+        }
+
     }
 
 }

x-pack/plugin/autoscaling/src/main/java/org/elasticsearch/xpack/autoscaling/decision/AutoscalingDecisions.java

@@ -23,6 +23,10 @@ public class AutoscalingDecisions implements ToXContent, Writeable {
 
     private final Collection<AutoscalingDecision> decisions;
 
+    public Collection<AutoscalingDecision> decisions() {
+        return decisions;
+    }
+
     public AutoscalingDecisions(final Collection<AutoscalingDecision> decisions) {
         Objects.requireNonNull(decisions);
         if (decisions.isEmpty()) {

x-pack/plugin/autoscaling/src/test/java/org/elasticsearch/xpack/autoscaling/action/GetAutoscalingDecisionActionRequestWireSerializingTests.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+package org.elasticsearch.xpack.autoscaling.action;
+
+import org.elasticsearch.common.io.stream.Writeable;
+import org.elasticsearch.test.AbstractWireSerializingTestCase;
+
+public class GetAutoscalingDecisionActionRequestWireSerializingTests extends AbstractWireSerializingTestCase<
+    GetAutoscalingDecisionAction.Request> {
+
+    @Override
+    protected Writeable.Reader<GetAutoscalingDecisionAction.Request> instanceReader() {
+        return GetAutoscalingDecisionAction.Request::new;
+    }
+
+    @Override
+    protected GetAutoscalingDecisionAction.Request createTestInstance() {
+        return new GetAutoscalingDecisionAction.Request();
+    }
+
+}

x-pack/plugin/autoscaling/src/test/java/org/elasticsearch/xpack/autoscaling/action/GetAutoscalingDecisionActionResponseWireSerializingTests.java

@@ -0,0 +1,37 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+package org.elasticsearch.xpack.autoscaling.action;
+
+import org.elasticsearch.common.io.stream.Writeable;
+import org.elasticsearch.test.AbstractWireSerializingTestCase;
+import org.elasticsearch.xpack.autoscaling.decision.AutoscalingDecisions;
+
+import java.util.Collections;
+import java.util.SortedMap;
+import java.util.TreeMap;
+
+import static org.elasticsearch.xpack.autoscaling.AutoscalingTestCase.randomAutoscalingDecisions;
+
+public class GetAutoscalingDecisionActionResponseWireSerializingTests extends AbstractWireSerializingTestCase<
+    GetAutoscalingDecisionAction.Response> {
+
+    @Override
+    protected Writeable.Reader<GetAutoscalingDecisionAction.Response> instanceReader() {
+        return GetAutoscalingDecisionAction.Response::new;
+    }
+
+    @Override
+    protected GetAutoscalingDecisionAction.Response createTestInstance() {
+        final int numberOfPolicies = randomIntBetween(1, 8);
+        final SortedMap<String, AutoscalingDecisions> decisions = new TreeMap<>();
+        for (int i = 0; i < numberOfPolicies; i++) {
+            decisions.put(randomAlphaOfLength(8), randomAutoscalingDecisions());
+        }
+        return new GetAutoscalingDecisionAction.Response(Collections.unmodifiableSortedMap(decisions));
+    }
+
+}