[RIP-10]Add test cases for BrokerStatsData (#934)

common/src/test/java/org/apache/rocketmq/common/protocol/body/BrokerStatsDataTest.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.body;
+
+import org.apache.rocketmq.remoting.protocol.RemotingSerializable;
+import org.junit.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.within;
+
+public class BrokerStatsDataTest {
+
+    @Test
+    public void testFromJson() throws Exception {
+        BrokerStatsData brokerStatsData = new BrokerStatsData();
+
+        {
+            BrokerStatsItem brokerStatsItem = new BrokerStatsItem();
+            brokerStatsItem.setAvgpt(10.0);
+            brokerStatsItem.setSum(100L);
+            brokerStatsItem.setTps(100.0);
+            brokerStatsData.setStatsDay(brokerStatsItem);
+        }
+
+        {
+            BrokerStatsItem brokerStatsItem = new BrokerStatsItem();
+            brokerStatsItem.setAvgpt(10.0);
+            brokerStatsItem.setSum(100L);
+            brokerStatsItem.setTps(100.0);
+            brokerStatsData.setStatsHour(brokerStatsItem);
+        }
+
+        {
+            BrokerStatsItem brokerStatsItem = new BrokerStatsItem();
+            brokerStatsItem.setAvgpt(10.0);
+            brokerStatsItem.setSum(100L);
+            brokerStatsItem.setTps(100.0);
+            brokerStatsData.setStatsMinute(brokerStatsItem);
+        }
+
+        String json = RemotingSerializable.toJson(brokerStatsData, true);
+        BrokerStatsData brokerStatsDataResult = RemotingSerializable.fromJson(json, BrokerStatsData.class);
+
+        assertThat(brokerStatsDataResult.getStatsMinute().getAvgpt()).isCloseTo(brokerStatsData.getStatsMinute().getAvgpt(), within(0.0001));
+        assertThat(brokerStatsDataResult.getStatsMinute().getTps()).isCloseTo(brokerStatsData.getStatsMinute().getTps(), within(0.0001));
+        assertThat(brokerStatsDataResult.getStatsMinute().getSum()).isEqualTo(brokerStatsData.getStatsMinute().getSum());
+
+        assertThat(brokerStatsDataResult.getStatsHour().getAvgpt()).isCloseTo(brokerStatsData.getStatsHour().getAvgpt(), within(0.0001));
+        assertThat(brokerStatsDataResult.getStatsHour().getTps()).isCloseTo(brokerStatsData.getStatsHour().getTps(), within(0.0001));
+        assertThat(brokerStatsDataResult.getStatsHour().getSum()).isEqualTo(brokerStatsData.getStatsHour().getSum());
+
+        assertThat(brokerStatsDataResult.getStatsDay().getAvgpt()).isCloseTo(brokerStatsData.getStatsDay().getAvgpt(), within(0.0001));
+        assertThat(brokerStatsDataResult.getStatsDay().getTps()).isCloseTo(brokerStatsData.getStatsDay().getTps(), within(0.0001));
+        assertThat(brokerStatsDataResult.getStatsDay().getSum()).isEqualTo(brokerStatsData.getStatsDay().getSum());
+    }
+}