content: /*
   * 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.controller.errors;
  
  import org.apache.kafka.common.errors.NotControllerException;
  import org.apache.kafka.common.errors.TimeoutException;
  import org.apache.kafka.common.errors.TopicExistsException;
  
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.Timeout;
  
  import java.util.OptionalInt;
  import java.util.concurrent.ExecutionException;
  
  import static org.apache.kafka.controller.errors.ControllerExceptions.isTimeoutException;
  import static org.apache.kafka.controller.errors.ControllerExceptions.newPreMigrationException;
  import static org.apache.kafka.controller.errors.ControllerExceptions.newWrongControllerException;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  
  @Timeout(value = 40)
  public class ControllerExceptionsTest {
      @Test
      public void testTimeoutExceptionIsTimeoutException() {
          assertTrue(isTimeoutException(new TimeoutException()));
      }
  
      @Test
      public void testWrappedTimeoutExceptionIsTimeoutException() {
          assertTrue(isTimeoutException(
              new ExecutionException("execution exception",
                  new TimeoutException())));
      }
  
      @Test
      public void testRuntimeExceptionIsNotTimeoutException() {
          assertFalse(isTimeoutException(new RuntimeException()));
      }
  
      @Test
      public void testWrappedRuntimeExceptionIsNotTimeoutException() {
          assertFalse(isTimeoutException(new ExecutionException(new RuntimeException())));
      }
  
      @Test
      public void testTopicExistsExceptionIsNotTimeoutException() {
          assertFalse(isTimeoutException(new TopicExistsException("Topic exists.")));
      }
  
      @Test
      public void testExecutionExceptionWithNullCauseIsNotTimeoutException() {
          assertFalse(isTimeoutException(new ExecutionException(null)));
      }
  
      @Test
      public void testNewPreMigrationExceptionWithNoController() {
          assertExceptionsMatch(new NotControllerException("No controller appears to be active."),
              newPreMigrationException(OptionalInt.empty()));
      }
  
      @Test
      public void testNewPreMigrationExceptionWithActiveController() {
          assertExceptionsMatch(new NotControllerException("The controller is in pre-migration mode."),
              newPreMigrationException(OptionalInt.of(1)));
      }
  
      @Test
      public void testNewWrongControllerExceptionWithNoController() {
          assertExceptionsMatch(new NotControllerException("No controller appears to be active."),
              newWrongControllerException(OptionalInt.empty()));
      }
  
      @Test
      public void testNewWrongControllerExceptionWithActiveController() {
          assertExceptionsMatch(new NotControllerException("The active controller appears to be node 1."),
              newWrongControllerException(OptionalInt.of(1)));
      }
  
      static void assertExceptionsMatch(Throwable a, Throwable b) {
          assertEquals(a.getClass(), b.getClass());
          assertEquals(a.getMessage(), b.getMessage());
          if (a.getCause() != null) {
              assertNotNull(b.getCause());
              assertExceptionsMatch(a.getCause(), b.getCause());
          } else {
              assertNull(b.getCause());
          }
      }
  }
  