[ISSUE #3946]Add unit test method or class for classes: NetUtils, Top…

…icResponse (#3947)

* Add unit test methods for NetUtils, JsonUtils

* Revoke redundant test method. Add test class.

eventmesh-admin/eventmesh-admin-rocketmq/src/test/java/org/apache/eventmesh/admin/rocketmq/response/TopicResponseTest.java

@@ -0,0 +1,56 @@
+/*
+ * 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.eventmesh.admin.rocketmq.response;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+public class TopicResponseTest {
+
+    @Test
+    public void testTopicResponse() {
+        String topic = "testtopic";
+        String createdTime = "2023-05-17 10:30:00";
+        TopicResponse topicResponse = new TopicResponse(topic, createdTime);
+
+        assertEquals(topic, topicResponse.getTopic());
+        assertEquals(createdTime, topicResponse.getCreatedTime());
+    }
+
+    @Test
+    public void testTopicResponseSerialization() throws Exception {
+        String topic = "testtopic";
+        String createdTime = "2023-05-17 10:30:00";
+        TopicResponse topicResponse = new TopicResponse(topic, createdTime);
+
+        ObjectMapper objectMapper = new ObjectMapper();
+        String json = objectMapper.writeValueAsString(topicResponse);
+
+        assertTrue(json.contains("topic"));
+        assertTrue(json.contains("created_time"));
+
+        TopicResponse deserializedResponse = objectMapper.readValue(json, TopicResponse.class);
+
+        assertEquals(topic, deserializedResponse.getTopic());
+        assertEquals(createdTime, deserializedResponse.getCreatedTime());
+    }
+}

eventmesh-common/src/test/java/org/apache/eventmesh/common/utils/NetUtilsTest.java

@@ -20,6 +20,7 @@
 import org.apache.eventmesh.common.enums.HttpMethod;
 
 import java.io.ByteArrayInputStream;
+import java.io.IOException;
 import java.net.InetSocketAddress;
 import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
@@ -70,4 +71,12 @@ public void testParsePostBody() throws Exception {
         Assert.assertEquals(expected, actual);
 
     }
+
+    @Test
+    public void testSendSuccessResponseHeaders() throws IOException {
+        HttpExchange exchange = Mockito.mock(HttpExchange.class);
+        NetUtils.sendSuccessResponseHeaders(exchange);
+        Mockito.verify(exchange, Mockito.times(1))
+                .sendResponseHeaders(Mockito.anyInt(), Mockito.anyLong());
+    }
 }