[RIP-10]Add test cases for OffsetMovedEvent (#895)

common/src/test/java/org/apache/rocketmq/common/protocol/topic/OffsetMovedEventTest.java

+/*
+ * 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.topic;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.apache.rocketmq.common.message.MessageQueue;
+import org.apache.rocketmq.remoting.protocol.RemotingSerializable;
+import org.junit.Test;
+
+public class OffsetMovedEventTest {
+
+  @Test
+  public void testFromJson() throws Exception {
+    OffsetMovedEvent event = mockOffsetMovedEvent();
+
+    String json = event.toJson();
+    OffsetMovedEvent fromJson = RemotingSerializable.fromJson(json, OffsetMovedEvent.class);
+
+    assertEquals(event, fromJson);
+  }
+
+  @Test
+  public void testFromBytes() throws Exception {
+    OffsetMovedEvent event = mockOffsetMovedEvent();
+
+    byte[] encodeData = event.encode();
+    OffsetMovedEvent decodeData = RemotingSerializable.decode(encodeData, OffsetMovedEvent.class);
+
+    assertEquals(event, decodeData);
+  }
+
+  private void assertEquals(OffsetMovedEvent srcData, OffsetMovedEvent decodeData) {
+    assertThat(decodeData.getConsumerGroup()).isEqualTo(srcData.getConsumerGroup());
+    assertThat(decodeData.getMessageQueue().getTopic())
+        .isEqualTo(srcData.getMessageQueue().getTopic());
+    assertThat(decodeData.getMessageQueue().getBrokerName())
+        .isEqualTo(srcData.getMessageQueue().getBrokerName());
+    assertThat(decodeData.getMessageQueue().getQueueId())
+        .isEqualTo(srcData.getMessageQueue().getQueueId());
+    assertThat(decodeData.getOffsetRequest()).isEqualTo(srcData.getOffsetRequest());
+    assertThat(decodeData.getOffsetNew()).isEqualTo(srcData.getOffsetNew());
+  }
+
+  private OffsetMovedEvent mockOffsetMovedEvent() {
+    OffsetMovedEvent event = new OffsetMovedEvent();
+    event.setConsumerGroup("test-group");
+    event.setMessageQueue(new MessageQueue("test-topic", "test-broker", 0));
+    event.setOffsetRequest(3000L);
+    event.setOffsetNew(1000L);
+    return event;
+  }
+}