clolov commented on code in PR #13122: URL: https://github.com/apache/kafka/pull/13122#discussion_r1183882730
########## tools/src/test/java/org/apache/kafka/tools/LogDirsCommandTest.java: ########## @@ -0,0 +1,119 @@ +/* + * 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.kafka.tools; + +import com.fasterxml.jackson.core.JsonProcessingException; +import com.fasterxml.jackson.databind.ObjectMapper; +import org.apache.kafka.clients.admin.Admin; +import org.apache.kafka.clients.admin.MockAdminClient; +import org.apache.kafka.common.Node; +import org.junit.jupiter.api.Test; + +import java.util.Arrays; +import java.util.Collections; +import java.util.HashMap; +import java.util.List; +import java.util.Map; + +import static org.junit.jupiter.api.Assertions.assertEquals; +import static org.junit.jupiter.api.Assertions.assertThrows; + +public class LogDirsCommandTest { + + @Test + public void shouldThrowWhenQueryingNonExistentBrokers() { + Node broker = new Node(1, "hostname", 9092); + try (MockAdminClient adminClient = new MockAdminClient(Collections.singletonList(broker), broker)) { + assertThrows(RuntimeException.class, () -> execute(fromArgsToOptions("--bootstrap-server", "EMPTY", "--broker-list", "0,1,2", "--describe"), adminClient)); + } + } + + @Test + public void shouldNotThrowWhenDuplicatedBrokers() throws JsonProcessingException { + Node broker = new Node(1, "hostname", 9092); + try (MockAdminClient adminClient = new MockAdminClient(Collections.singletonList(broker), broker)) { + String standardOutput = execute(fromArgsToOptions("--bootstrap-server", "EMPTY", "--broker-list", "1,1", "--describe"), adminClient); + String[] standardOutputLines = standardOutput.split("\n"); + assertEquals(3, standardOutputLines.length); + @SuppressWarnings("unchecked") + Map<String, Object> information = new ObjectMapper().readValue(standardOutputLines[2], HashMap.class); + @SuppressWarnings("unchecked") + List<Object> brokerInformation = (List<Object>) information.get("brokers"); + @SuppressWarnings("unchecked") + Integer brokerId = (Integer) ((HashMap<String, Object>) brokerInformation.get(0)).get("broker"); + assertEquals(1, brokerInformation.size()); + assertEquals(1, brokerId); + } + } + + @Test + public void shouldQueryAllBrokersIfNonSpecified() throws JsonProcessingException { + Node brokerOne = new Node(1, "hostname", 9092); + Node brokerTwo = new Node(2, "hostname", 9092); + try (MockAdminClient adminClient = new MockAdminClient(Arrays.asList(brokerOne, brokerTwo), brokerOne)) { + String standardOutput = execute(fromArgsToOptions("--bootstrap-server", "EMPTY", "--describe"), adminClient); + String[] standardOutputLines = standardOutput.split("\n"); + assertEquals(3, standardOutputLines.length); + @SuppressWarnings("unchecked") + Map<String, Object> information = new ObjectMapper().readValue(standardOutputLines[2], HashMap.class); + @SuppressWarnings("unchecked") + List<Object> brokerInformation = (List<Object>) information.get("brokers"); + @SuppressWarnings("unchecked") + Integer brokerOneId = (Integer) ((HashMap<String, Object>) brokerInformation.get(0)).get("broker"); + @SuppressWarnings("unchecked") + Integer brokerTwoId = (Integer) ((HashMap<String, Object>) brokerInformation.get(1)).get("broker"); Review Comment: You are absolutely correct, order is not guaranteed. In the newest commit I check that the elements are present in a set. Thank you for caching this! -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: jira-unsubscr...@kafka.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
