Polish apache#4905 : Add test cases for ConfigChangeType

dubbo-common/src/test/java/org/apache/dubbo/common/config/configcenter/ConfigChangeTypeTest.java

@@ -0,0 +1,38 @@
+/*
+ * 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.dubbo.common.config.configcenter;
+
+import org.junit.jupiter.api.Test;
+
+import static org.apache.dubbo.common.config.configcenter.ConfigChangeType.ADDED;
+import static org.apache.dubbo.common.config.configcenter.ConfigChangeType.DELETED;
+import static org.apache.dubbo.common.config.configcenter.ConfigChangeType.MODIFIED;
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+
+/**
+ * {@link ConfigChangeType} Test
+ *
+ * @see ConfigChangeType
+ * @since 2.7.4
+ */
+public class ConfigChangeTypeTest {
+
+    @Test
+    public void testMembers() {
+        assertArrayEquals(new ConfigChangeType[]{ADDED, MODIFIED, DELETED}, ConfigChangeType.values());
+    }
+}