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.test.driver;
  
  import io.aeron.Aeron;
  import io.aeron.CommonContext;
  import io.aeron.driver.MediaDriver;
  import org.agrona.IoUtil;
  import org.agrona.concurrent.status.CountersReader;
  import org.junit.jupiter.api.Test;
  
  import java.io.File;
  
  import static org.junit.jupiter.api.Assertions.*;
  import static org.junit.jupiter.api.Assumptions.assumeTrue;
  
  class TestMediaDriverTest
  {
      @Test
      void countersReaderReturnsTheSameInstanceForTheEntireLifetimeOfTheDriver()
      {
          final File aeronDirectory;
          final MediaDriver.Context context = new MediaDriver.Context().dirDeleteOnStart(true).dirDeleteOnShutdown(false);
          try (TestMediaDriver driver = TestMediaDriver.launch(context, null))
          {
              aeronDirectory = driver.context().aeronDirectory();
              assertNotNull(aeronDirectory);
  
              final CountersReader countersReader = driver.counters();
              assertNotNull(countersReader);
              assertSame(countersReader, driver.counters());
          }
  
          assertTrue(aeronDirectory.exists());
          IoUtil.delete(aeronDirectory, false);
          assertFalse(aeronDirectory.exists());
      }
  
      @Test
      void connectToCMediaDriverWithoutSpecifyingAeronDir()
      {
          assumeTrue(TestMediaDriver.shouldRunCMediaDriver());
  
          final MediaDriver.Context context = new MediaDriver.Context().dirDeleteOnStart(true).dirDeleteOnShutdown(false);
          assertEquals(CommonContext.getAeronDirectoryName(), context.aeronDirectoryName());
          try (TestMediaDriver mediaDriver = CTestMediaDriver.launch(context, false, null);
              Aeron aeron = Aeron.connect(new Aeron.Context().aeronDirectoryName(context.aeronDirectoryName())))
          {
              final File aeronDirectory = aeron.context().aeronDirectory();
              assertNotNull(aeronDirectory);
              assertTrue(aeronDirectory.exists());
              assertNotNull(mediaDriver);
          }
          finally
          {
              context.deleteDirectory();
          }
      }
  }
  