frankvicky commented on code in PR #15766:
URL: https://github.com/apache/kafka/pull/15766#discussion_r1590198922


##########
tools/src/test/java/org/apache/kafka/tools/consumer/group/DeleteConsumerGroupsTest.java:
##########
@@ -17,279 +17,374 @@
 package org.apache.kafka.tools.consumer.group;
 
 import joptsimple.OptionException;
+import kafka.test.ClusterConfig;
+import kafka.test.ClusterGenerator;
+import kafka.test.ClusterInstance;
+import kafka.test.annotation.ClusterTemplate;
+import kafka.test.junit.ClusterTestExtensions;
+import org.apache.kafka.clients.admin.AdminClientConfig;
 import org.apache.kafka.clients.consumer.GroupProtocol;
+import org.apache.kafka.clients.consumer.KafkaConsumer;
 import org.apache.kafka.clients.consumer.RangeAssignor;
+import org.apache.kafka.common.ConsumerGroupState;
 import org.apache.kafka.common.errors.GroupIdNotFoundException;
 import org.apache.kafka.common.errors.GroupNotEmptyException;
 import org.apache.kafka.common.protocol.Errors;
+import org.apache.kafka.common.serialization.StringDeserializer;
 import org.apache.kafka.test.TestUtils;
 import org.apache.kafka.tools.ToolsTestUtils;
-import org.junit.jupiter.params.ParameterizedTest;
-import org.junit.jupiter.params.provider.ValueSource;
+import org.junit.jupiter.api.extension.ExtendWith;
 
 import java.util.Arrays;
+import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
 import java.util.Objects;
-import java.util.Optional;
-import java.util.Properties;
 import java.util.Set;
 import java.util.function.Function;
+import java.util.function.Predicate;
 import java.util.stream.Collectors;
 import java.util.stream.IntStream;
 
+import static java.util.Collections.emptyMap;
+import static java.util.Collections.singletonMap;
+import static kafka.test.annotation.Type.CO_KRAFT;
+import static kafka.test.annotation.Type.KRAFT;
+import static kafka.test.annotation.Type.ZK;
+import static 
org.apache.kafka.clients.consumer.ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG;
+import static org.apache.kafka.clients.consumer.ConsumerConfig.GROUP_ID_CONFIG;
+import static 
org.apache.kafka.clients.consumer.ConsumerConfig.GROUP_PROTOCOL_CONFIG;
+import static 
org.apache.kafka.clients.consumer.ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG;
+import static 
org.apache.kafka.clients.consumer.ConsumerConfig.PARTITION_ASSIGNMENT_STRATEGY_CONFIG;
+import static 
org.apache.kafka.clients.consumer.ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG;
+import static org.apache.kafka.common.ConsumerGroupState.EMPTY;
+import static org.apache.kafka.common.ConsumerGroupState.STABLE;
+import static 
org.apache.kafka.coordinator.group.GroupCoordinatorConfig.NEW_GROUP_COORDINATOR_ENABLE_CONFIG;
+import static 
org.apache.kafka.coordinator.group.GroupCoordinatorConfig.OFFSETS_TOPIC_PARTITIONS_CONFIG;
+import static 
org.apache.kafka.coordinator.group.GroupCoordinatorConfig.OFFSETS_TOPIC_REPLICATION_FACTOR_CONFIG;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 
-public class DeleteConsumerGroupsTest extends ConsumerGroupCommandTest {
-    @ParameterizedTest
-    @ValueSource(strings = {"zk", "kraft"})
-    public void testDeleteWithTopicOption(String quorum) {
-        createOffsetsTopic(listenerName(), new Properties());
-        String[] cgcArgs = new String[]{"--bootstrap-server", 
bootstrapServers(listenerName()), "--delete", "--group", GROUP, "--topic"};
-        assertThrows(OptionException.class, () -> 
getConsumerGroupService(cgcArgs));
-    }
-
-    @ParameterizedTest
-    @ValueSource(strings = {"zk", "kraft"})
-    public void testDeleteCmdNonExistingGroup(String quorum) {
-        createOffsetsTopic(listenerName(), new Properties());
-        String missingGroup = "missing.group";
 
-        String[] cgcArgs = new String[]{"--bootstrap-server", 
bootstrapServers(listenerName()), "--delete", "--group", missingGroup};
-        ConsumerGroupCommand.ConsumerGroupService service = 
getConsumerGroupService(cgcArgs);
+@ExtendWith(value = ClusterTestExtensions.class)
+public class DeleteConsumerGroupsTest {
+    private final ClusterInstance cluster;
 
-        String output = 
ToolsTestUtils.grabConsoleOutput(service::deleteGroups);
-        assertTrue(output.contains("Group '" + missingGroup + "' could not be 
deleted due to:") && output.contains(Errors.GROUP_ID_NOT_FOUND.message()),
-            "The expected error (" + Errors.GROUP_ID_NOT_FOUND + ") was not 
detected while deleting consumer group");
+    public DeleteConsumerGroupsTest(ClusterInstance cluster) {
+        this.cluster = cluster;
     }
 
-    @ParameterizedTest
-    @ValueSource(strings = {"zk", "kraft"})
-    public void testDeleteNonExistingGroup(String quorum) {
-        createOffsetsTopic(listenerName(), new Properties());
-        String missingGroup = "missing.group";
-
-        // note the group to be deleted is a different (non-existing) group
-        String[] cgcArgs = new String[]{"--bootstrap-server", 
bootstrapServers(listenerName()), "--delete", "--group", missingGroup};
-        ConsumerGroupCommand.ConsumerGroupService service = 
getConsumerGroupService(cgcArgs);
-
-        Map<String, Throwable> result = service.deleteGroups();
-        assertTrue(result.size() == 1 && result.containsKey(missingGroup) && 
result.get(missingGroup).getCause() instanceof GroupIdNotFoundException,
-            "The expected error (" + Errors.GROUP_ID_NOT_FOUND + ") was not 
detected while deleting consumer group");
+    private static void generator(ClusterGenerator clusterGenerator) {
+        Map<String, String> serverProperties = new HashMap<>();
+        serverProperties.put(OFFSETS_TOPIC_PARTITIONS_CONFIG, "1");
+        serverProperties.put(OFFSETS_TOPIC_REPLICATION_FACTOR_CONFIG, "1");
+        serverProperties.put(NEW_GROUP_COORDINATOR_ENABLE_CONFIG, "false");
+
+        ClusterConfig zk = ClusterConfig.defaultBuilder()
+                .setType(ZK)
+                .setServerProperties(serverProperties)
+                .build();
+        clusterGenerator.accept(zk);
+
+        ClusterConfig raftWithLegacyCoordinator = 
ClusterConfig.defaultBuilder()
+                .setType(KRAFT)
+                .setServerProperties(serverProperties)
+                .build();
+        clusterGenerator.accept(raftWithLegacyCoordinator);
+
+        ClusterConfig combinedKRaftWithLegacyCoordinator = 
ClusterConfig.defaultBuilder()
+                .setType(CO_KRAFT)
+                .setServerProperties(serverProperties)
+                .build();
+        clusterGenerator.accept(combinedKRaftWithLegacyCoordinator);
+
+        // Following are test case config with new group coordinator
+        serverProperties.put(NEW_GROUP_COORDINATOR_ENABLE_CONFIG, "true");
+
+        ClusterConfig raftWithNewGroupCoordinator = 
ClusterConfig.defaultBuilder()
+                .setType(KRAFT)
+                .setName("newGroupCoordinator")
+                .setServerProperties(serverProperties)
+                .build();
+        clusterGenerator.accept(raftWithNewGroupCoordinator);
+
+        ClusterConfig combinedKRaftWithNewGroupCoordinator = 
ClusterConfig.defaultBuilder()
+                .setType(CO_KRAFT)
+                .setName("newGroupCoordinator")
+                .setServerProperties(serverProperties)
+                .build();
+        clusterGenerator.accept(combinedKRaftWithNewGroupCoordinator);
     }
 
-    @ParameterizedTest
-    @ValueSource(strings = {"zk", "kraft"})
-    public void testDeleteCmdNonEmptyGroup(String quorum) throws Exception {
-        createOffsetsTopic(listenerName(), new Properties());
-
-        // run one consumer in the group
-        addConsumerGroupExecutor(1);
-        String[] cgcArgs = new String[]{"--bootstrap-server", 
bootstrapServers(listenerName()), "--delete", "--group", GROUP};
-        ConsumerGroupCommand.ConsumerGroupService service = 
getConsumerGroupService(cgcArgs);
-
-        TestUtils.waitForCondition(
-            () -> service.collectGroupMembers(GROUP, 
false).getValue().get().size() == 1,
-            "The group did not initialize as expected."
-        );
-
-        String output = 
ToolsTestUtils.grabConsoleOutput(service::deleteGroups);
-        assertTrue(output.contains("Group '" + GROUP + "' could not be deleted 
due to:") && output.contains(Errors.NON_EMPTY_GROUP.message()),
-            "The expected error (" + Errors.NON_EMPTY_GROUP + ") was not 
detected while deleting consumer group. Output was: (" + output + ")");
+    @ClusterTemplate("generator")
+    public void testDeleteWithTopicOption() {
+        String[] cgcArgs = new String[]{"--bootstrap-server", 
cluster.bootstrapServers(), "--delete", "--group", getDummyGroupId(), 
"--topic"};
+        assertThrows(OptionException.class, () -> 
getConsumerGroupService(cgcArgs));
     }
 
-    @ParameterizedTest
-    @ValueSource(strings = {"zk", "kraft"})
-    public void testDeleteNonEmptyGroup(String quorum) throws Exception {
-        createOffsetsTopic(listenerName(), new Properties());
-
-        // run one consumer in the group
-        addConsumerGroupExecutor(1);
-        String[] cgcArgs = new String[]{"--bootstrap-server", 
bootstrapServers(listenerName()), "--delete", "--group", GROUP};
-        ConsumerGroupCommand.ConsumerGroupService service = 
getConsumerGroupService(cgcArgs);
-
-        TestUtils.waitForCondition(
-            () -> service.collectGroupMembers(GROUP, 
false).getValue().get().size() == 1,
-            "The group did not initialize as expected."
-        );
-
-        Map<String, Throwable> result = service.deleteGroups();
-        assertNotNull(result.get(GROUP),
-            "Group was deleted successfully, but it shouldn't have been. 
Result was:(" + result + ")");
-        assertTrue(result.size() == 1 && result.containsKey(GROUP) && 
result.get(GROUP).getCause() instanceof GroupNotEmptyException,
-            "The expected error (" + Errors.NON_EMPTY_GROUP + ") was not 
detected while deleting consumer group. Result was:(" + result + ")");
+    @ClusterTemplate("generator")
+    public void testDeleteCmdNonExistingGroup() {
+        String missingGroupId = getDummyGroupId();
+        String[] cgcArgs = new String[]{"--bootstrap-server", 
cluster.bootstrapServers(), "--delete", "--group", missingGroupId};
+        try (ConsumerGroupCommand.ConsumerGroupService service = 
getConsumerGroupService(cgcArgs)) {
+            String output = 
ToolsTestUtils.grabConsoleOutput(service::deleteGroups);
+            assertTrue(output.contains("Group '" + missingGroupId + "' could 
not be deleted due to:") && 
output.contains(Errors.GROUP_ID_NOT_FOUND.message()),
+                    "The expected error (" + Errors.GROUP_ID_NOT_FOUND + ") 
was not detected while deleting consumer group");
+        }
     }
 
-    @ParameterizedTest
-    @ValueSource(strings = {"zk", "kraft"})
-    public void testDeleteCmdEmptyGroup(String quorum) throws Exception {
-        createOffsetsTopic(listenerName(), new Properties());
-
-        // run one consumer in the group
-        ConsumerGroupExecutor executor = addConsumerGroupExecutor(1);
-        String[] cgcArgs = new String[]{"--bootstrap-server", 
bootstrapServers(listenerName()), "--delete", "--group", GROUP};
-        ConsumerGroupCommand.ConsumerGroupService service = 
getConsumerGroupService(cgcArgs);
-
-        TestUtils.waitForCondition(
-            () -> service.listConsumerGroups().contains(GROUP) && 
Objects.equals(service.collectGroupState(GROUP).state, "Stable"),
-            "The group did not initialize as expected."
-        );
-
-        executor.shutdown();
+    @ClusterTemplate("generator")
+    public void testDeleteNonExistingGroup() {
+        String missingGroupId = getDummyGroupId();
+        String[] cgcArgs = new String[]{"--bootstrap-server", 
cluster.bootstrapServers(), "--delete", "--group", missingGroupId};
+        try (ConsumerGroupCommand.ConsumerGroupService service = 
getConsumerGroupService(cgcArgs)) {
+            Map<String, Throwable> result = service.deleteGroups();
+            assertTrue(result.size() == 1 && 
result.containsKey(missingGroupId) && result.get(missingGroupId).getCause() 
instanceof GroupIdNotFoundException,

Review Comment:
   Yes, this is more clear and readable. 😀



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