Add unit test for cluster/FlowResponseDataDecoder (#1514)

Signed-off-by: yunfeiyanggzq <yunfeiyang@buaa.edu.cn>

sentinel-cluster/sentinel-cluster-client-default/src/test/java/com/alibaba/csp/sentinel/cluster/client/codec/data/FlowResponseDataDecoderTest.java

@@ -0,0 +1,36 @@
+/*
+ * Copyright 1999-2018 Alibaba Group Holding Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.alibaba.csp.sentinel.cluster.client.codec.data;
+
+import com.alibaba.csp.sentinel.cluster.response.data.FlowTokenResponseData;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class FlowResponseDataDecoderTest {
+    @Test
+    public void testDecode() {
+        ByteBuf buf = Unpooled.buffer();
+        FlowResponseDataDecoder decoder = new FlowResponseDataDecoder();
+        FlowTokenResponseData data = new FlowTokenResponseData();
+        data.setRemainingCount(12);
+        data.setWaitInMs(13);
+        buf.writeInt(12);
+        buf.writeInt(13);
+        Assert.assertEquals(decoder.decode(buf), data);
+    }
+}

sentinel-cluster/sentinel-cluster-common-default/src/main/java/com/alibaba/csp/sentinel/cluster/response/data/FlowTokenResponseData.java

@@ -42,11 +42,30 @@ public class FlowTokenResponseData {
         return this;
     }
 
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (!(o instanceof FlowTokenResponseData)) {
+            return false;
+        }
+        FlowTokenResponseData that = (FlowTokenResponseData) o;
+        return this.remainingCount == that.remainingCount && this.waitInMs == that.waitInMs;
+    }
+
+    @Override
+    public int hashCode() {
+        int result = remainingCount;
+        result = 31 * result + waitInMs;
+        return result;
+    }
+
     @Override
     public String toString() {
         return "FlowTokenResponseData{" +
-            "remainingCount=" + remainingCount +
-            ", waitInMs=" + waitInMs +
-            '}';
+                "remainingCount=" + remainingCount +
+                ", waitInMs=" + waitInMs +
+                '}';
     }
 }