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.raft;
  
  import org.apache.kafka.common.utils.LogContext;
  import org.apache.kafka.server.fault.MockFaultHandler;
  
  import org.junit.jupiter.api.Test;
  import org.mockito.Mockito;
  
  import java.util.concurrent.CompletableFuture;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  import static org.mockito.Mockito.verify;
  import static org.mockito.Mockito.when;
  
  class KafkaRaftClientDriverTest {
  
      @Test
      public void testShutdown() throws Exception {
          @SuppressWarnings("unchecked")
          KafkaRaftClient<String> raftClient = (KafkaRaftClient<String>) Mockito.mock(KafkaRaftClient.class);
          MockFaultHandler faultHandler = new MockFaultHandler("TestFaultHandler");
          KafkaRaftClientDriver<String> driver = new KafkaRaftClientDriver<>(
              raftClient,
              "test-raft",
              faultHandler,
              new LogContext()
          );
  
          when(raftClient.isRunning()).thenReturn(true);
          assertTrue(driver.isRunning());
  
          CompletableFuture<Void> shutdownFuture = new CompletableFuture<>();
          when(raftClient.shutdown(5000)).thenReturn(shutdownFuture);
  
          driver.initiateShutdown();
          assertTrue(driver.isRunning());
          assertTrue(driver.isShutdownInitiated());
          verify(raftClient).shutdown(5000);
  
          shutdownFuture.complete(null);
          when(raftClient.isRunning()).thenReturn(false);
          driver.run();
          assertFalse(driver.isRunning());
          assertTrue(driver.isShutdownComplete());
          assertNull(faultHandler.firstException());
  
          driver.shutdown();
          verify(raftClient).close();
      }
  
      @Test
      public void testUncaughtException() {
          @SuppressWarnings("unchecked")
          KafkaRaftClient<String> raftClient = (KafkaRaftClient<String>) Mockito.mock(KafkaRaftClient.class);
          MockFaultHandler faultHandler = new MockFaultHandler("TestFaultHandler");
          KafkaRaftClientDriver<String> driver = new KafkaRaftClientDriver<>(
              raftClient,
              "test-raft",
              faultHandler,
              new LogContext()
          );
  
          when(raftClient.isRunning()).thenReturn(true);
          assertTrue(driver.isRunning());
  
          RuntimeException exception = new RuntimeException();
          Mockito.doThrow(exception).when(raftClient).poll();
          driver.run();
  
          assertTrue(driver.isShutdownComplete());
          assertTrue(driver.isThreadFailed());
          assertFalse(driver.isRunning());
  
          Throwable caughtException = faultHandler.firstException().getCause();
          assertEquals(exception, caughtException);
      }
  
  }
  