}
  }

  public void testDirectExecutorService_shutdownNow() {
    ExecutorService executor = newDirectExecutorService();
    assertEquals(ImmutableList.of(), executor.shutdownNow());
    assertTrue(executor.isShutdown());
  }

  public void testExecuteAfterShutdown() {
    ExecutorService executor = newDirectExecutorService();
    executor.shutdown();

    }
  }

  public void testDirectExecutorService_shutdownNow() {
    ExecutorService executor = newDirectExecutorService();
    assertEquals(ImmutableList.of(), executor.shutdownNow());
    assertTrue(executor.isShutdown());
  }

  public void testExecuteAfterShutdown() {
    ExecutorService executor = newDirectExecutorService();
    executor.shutdown();

 * limitations under the License.
 */

package com.google.common.util.concurrent;

import static com.google.common.truth.Truth.assertThat;
import static com.google.common.util.concurrent.MoreExecutors.newDirectExecutorService;
import static com.google.common.util.concurrent.ReflectionFreeAssertThrows.assertThrows;

import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;

import com.google.errorprone.annotations.concurrent.GuardedBy;
import java.util.List;
import java.util.concurrent.RejectedExecutionException;
import java.util.concurrent.TimeUnit;

/** See newDirectExecutorService javadoc for behavioral notes. */
@GwtIncompatible
final class DirectExecutorService extends AbstractListeningExecutorService {

   * already have been executed.
   *
   * @since 18.0 (present as MoreExecutors.sameThreadExecutor() since 10.0)
   */
  @GwtIncompatible // TODO
  public static ListeningExecutorService newDirectExecutorService() {
    return new DirectExecutorService();
  }

  /**
   * Returns an {@link Executor} that runs each task in the thread that invokes {@link
   * Executor#execute execute}, as in {@link CallerRunsPolicy}.