diff --git a/common/src/test/java/org/apache/rocketmq/common/protocol/heartbeat/SubscriptionDataTest.java b/common/src/test/java/org/apache/rocketmq/common/protocol/heartbeat/SubscriptionDataTest.java
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@@ -0,0 +1,85 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.rocketmq.common.protocol.heartbeat;
+
+import org.apache.rocketmq.common.filter.ExpressionType;
+import org.apache.rocketmq.remoting.protocol.RemotingSerializable;
+import org.assertj.core.util.Sets;
+import org.junit.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class SubscriptionDataTest {
+
+    @Test
+    public void testConstructor1() {
+        SubscriptionData subscriptionData = new SubscriptionData();
+        assertThat(subscriptionData.getTopic()).isNull();
+        assertThat(subscriptionData.getSubString()).isNull();
+        assertThat(subscriptionData.getSubVersion()).isLessThanOrEqualTo(System.currentTimeMillis());
+        assertThat(subscriptionData.getExpressionType()).isEqualTo(ExpressionType.TAG);
+        assertThat(subscriptionData.getFilterClassSource()).isNull();
+        assertThat(subscriptionData.getCodeSet()).isEmpty();
+        assertThat(subscriptionData.getTagsSet()).isEmpty();
+        assertThat(subscriptionData.isClassFilterMode()).isFalse();
+    }
+
+    @Test
+    public void testConstructor2() {
+        SubscriptionData subscriptionData = new SubscriptionData("TOPICA", "*");
+        assertThat(subscriptionData.getTopic()).isEqualTo("TOPICA");
+        assertThat(subscriptionData.getSubString()).isEqualTo("*");
+        assertThat(subscriptionData.getSubVersion()).isLessThanOrEqualTo(System.currentTimeMillis());
+        assertThat(subscriptionData.getExpressionType()).isEqualTo(ExpressionType.TAG);
+        assertThat(subscriptionData.getFilterClassSource()).isNull();
+        assertThat(subscriptionData.getCodeSet()).isEmpty();
+        assertThat(subscriptionData.getTagsSet()).isEmpty();
+        assertThat(subscriptionData.isClassFilterMode()).isFalse();
+    }
+
+
+    @Test
+    public void testHashCodeNotEquals() {
+        SubscriptionData subscriptionData = new SubscriptionData("TOPICA", "*");
+        subscriptionData.setCodeSet(Sets.newLinkedHashSet(1, 2, 3));
+        subscriptionData.setTagsSet(Sets.newLinkedHashSet("TAGA", "TAGB", "TAG3"));
+        assertThat(subscriptionData.hashCode()).isNotEqualTo(System.identityHashCode(subscriptionData));
+    }
+
+    @Test
+    public void testFromJson() throws Exception {
+        SubscriptionData subscriptionData = new SubscriptionData("TOPICA", "*");
+        subscriptionData.setFilterClassSource("TestFilterClassSource");
+        subscriptionData.setCodeSet(Sets.newLinkedHashSet(1, 2, 3));
+        subscriptionData.setTagsSet(Sets.newLinkedHashSet("TAGA", "TAGB", "TAG3"));
+        String json = RemotingSerializable.toJson(subscriptionData, true);
+        SubscriptionData fromJson = RemotingSerializable.fromJson(json, SubscriptionData.class);
+        assertThat(subscriptionData).isEqualTo(fromJson);
+        assertThat(subscriptionData).isEqualByComparingTo(fromJson);
+        assertThat(subscriptionData.getFilterClassSource()).isEqualTo("TestFilterClassSource");
+        assertThat(fromJson.getFilterClassSource()).isNull();
+    }
+
+
+    @Test
+    public void testCompareTo() {
+        SubscriptionData subscriptionData = new SubscriptionData("TOPICA", "*");
+        SubscriptionData subscriptionData1 = new SubscriptionData("TOPICBA", "*");
+        assertThat(subscriptionData.compareTo(subscriptionData1)).isEqualTo("TOPICA@*".compareTo("TOPICB@*"));
+    }
+}