content: /*
   * Copyright 2014-2025 Real Logic Limited.
   *
   * Licensed 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
   *
   * https://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 io.aeron.driver;
  
  import io.aeron.Aeron;
  import io.aeron.CncFileDescriptor;
  import io.aeron.test.EventLogExtension;
  import io.aeron.test.InterruptAfter;
  import io.aeron.test.InterruptingTestCallback;
  import io.aeron.test.SystemTestWatcher;
  import io.aeron.test.driver.TestMediaDriver;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.extension.ExtendWith;
  import org.junit.jupiter.api.extension.RegisterExtension;
  import org.junit.jupiter.api.io.TempDir;
  
  import java.io.IOException;
  import java.nio.file.Files;
  import java.nio.file.Path;
  
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  @ExtendWith({ EventLogExtension.class, InterruptingTestCallback.class })
  public class DriverShouldStartIfAeronDirectoryExistsTest
  {
      @RegisterExtension
      final SystemTestWatcher systemTestWatcher = new SystemTestWatcher();
  
      @Test
      @InterruptAfter(10)
      void test(final @TempDir Path tempDir) throws IOException
      {
          final Path aeronDir = tempDir.resolve("aeron-existing-dir");
          Files.createDirectories(aeronDir);
          assertTrue(Files.exists(aeronDir));
          final Path cncFile = aeronDir.resolve(CncFileDescriptor.CNC_FILE);
          assertTrue(Files.notExists(cncFile));
  
          try (TestMediaDriver driver = TestMediaDriver.launch(
              new MediaDriver.Context().aeronDirectoryName(aeronDir.toString()), systemTestWatcher);
              Aeron aeron = Aeron.connect(new Aeron.Context().aeronDirectoryName(driver.aeronDirectoryName())))
          {
              assertTrue(aeron.context().cncFile().exists());
          }
      }
  }
  