KAFKA-17171: Add test cases for STATIC_BROKER_CONFIGin kraft mode

core/src/test/java/kafka/admin/StaticBrokerConfigTest.java

@@ -0,0 +1,66 @@
+/*
+ * 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 kafka.admin;
+
+
+import org.apache.kafka.clients.admin.Admin;
+import org.apache.kafka.clients.admin.Config;
+import org.apache.kafka.clients.admin.ConfigEntry;
+import org.apache.kafka.clients.admin.CreateTopicsResult;
+import org.apache.kafka.clients.admin.NewTopic;
+import org.apache.kafka.common.config.ConfigResource;
+import org.apache.kafka.common.config.TopicConfig;
+import org.apache.kafka.common.test.api.ClusterConfigProperty;
+import org.apache.kafka.common.test.api.ClusterInstance;
+import org.apache.kafka.common.test.api.ClusterTest;
+import org.apache.kafka.common.test.api.ClusterTestDefaults;
+import org.apache.kafka.common.test.api.ClusterTestExtensions;
+import org.apache.kafka.common.test.api.Type;
+import org.apache.kafka.coordinator.group.GroupCoordinatorConfig;
+import org.junit.jupiter.api.extension.ExtendWith;
+
+import java.util.List;
+import java.util.concurrent.ExecutionException;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
+@ExtendWith(value = ClusterTestExtensions.class)
+@ClusterTestDefaults(types = {Type.KRAFT},
+    serverProperties = {
+        @ClusterConfigProperty(key = GroupCoordinatorConfig.OFFSETS_TOPIC_PARTITIONS_CONFIG, value = "1"),
+        @ClusterConfigProperty(key = GroupCoordinatorConfig.OFFSETS_TOPIC_REPLICATION_FACTOR_CONFIG, value = "1"),
+        @ClusterConfigProperty(key = "log.segment.bytes", value = "12345")
+    })
+public class StaticBrokerConfigTest {
+    private static final String TOPIC = "topic";
+
+    @ClusterTest
+    public void temp(ClusterInstance cluster) throws ExecutionException, InterruptedException {
+        try (Admin admin = cluster.admin()) {
+            CreateTopicsResult createResult = admin.createTopics(List.of(new NewTopic(TOPIC, 1, (short) 1)));
+            ConfigEntry config = createResult.config(TOPIC).get().get(TopicConfig.SEGMENT_BYTES_CONFIG);
+            assertNotNull(config, "Create Topic result should include static topic config");
+            assertEquals("12345", config.value());
+
+            ConfigResource resource = new ConfigResource(ConfigResource.Type.BROKER, "0");
+            Config configResourceConfigMap = admin.describeConfigs(List.of(resource)).all().get().get(resource);
+            assertNull(configResourceConfigMap.get(TopicConfig.SEGMENT_BYTES_CONFIG));
+        }
+    }
+}