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.common.protocol;
  
  import org.apache.kafka.common.errors.ApiException;
  import org.apache.kafka.common.errors.TimeoutException;
  
  import org.junit.jupiter.api.Test;
  
  import java.util.HashSet;
  import java.util.Set;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotEquals;
  import static org.junit.jupiter.api.Assertions.assertNull;
  
  public class ErrorsTest {
  
      @Test
      public void testUniqueErrorCodes() {
          Set<Short> codeSet = new HashSet<>();
          for (Errors error : Errors.values()) {
              codeSet.add(error.code());
          }
          assertEquals(codeSet.size(), Errors.values().length, "Error codes must be unique");
      }
  
      @Test
      public void testUniqueExceptions() {
          Set<Class<?>> exceptionSet = new HashSet<>();
          for (Errors error : Errors.values()) {
              if (error != Errors.NONE)
                  exceptionSet.add(error.exception().getClass());
          }
          assertEquals(exceptionSet.size(), Errors.values().length - 1, "Exceptions must be unique"); // Ignore NONE
      }
  
      @Test
      public void testExceptionsAreNotGeneric() {
          for (Errors error : Errors.values()) {
              if (error != Errors.NONE)
                  assertNotEquals(error.exception().getClass(), ApiException.class, "Generic ApiException should not be used");
          }
      }
  
      @Test
      public void testNoneException() {
          assertNull(Errors.NONE.exception(), "The NONE error should not have an exception");
      }
  
      @Test
      public void testForExceptionInheritance() {
          class ExtendedTimeoutException extends TimeoutException { }
  
          Errors expectedError = Errors.forException(new TimeoutException());
          Errors actualError = Errors.forException(new ExtendedTimeoutException());
  
          assertEquals(expectedError, actualError, "forException should match super classes");
      }
  
      @Test
      public void testForExceptionDefault() {
          Errors error = Errors.forException(new ApiException());
          assertEquals(Errors.UNKNOWN_SERVER_ERROR, error, "forException should default to unknown");
      }
  
      @Test
      public void testExceptionName() {
          String exceptionName = Errors.UNKNOWN_SERVER_ERROR.exceptionName();
          assertEquals("org.apache.kafka.common.errors.UnknownServerException", exceptionName);
          exceptionName = Errors.NONE.exceptionName();
          assertNull(exceptionName);
          exceptionName = Errors.INVALID_TOPIC_EXCEPTION.exceptionName();
          assertEquals("org.apache.kafka.common.errors.InvalidTopicException", exceptionName);
      }
  
  }
  