code: /*
   * Copyright (c) 2016-present, RxJava Contributors.
   *
   * 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
   *
   * 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 io.reactivex.rxjava3.internal.schedulers;
  
  import static org.junit.Assert.*;
  
  import java.util.concurrent.FutureTask;
  
  import org.junit.Test;
  
  import io.reactivex.rxjava3.core.RxJavaTest;
  import io.reactivex.rxjava3.internal.functions.Functions;
  import io.reactivex.rxjava3.testsupport.TestHelper;
  
  public class AbstractDirectTaskTest extends RxJavaTest {
  
      @Test
      public void cancelSetFuture() {
          AbstractDirectTask task = new AbstractDirectTask(Functions.EMPTY_RUNNABLE, true) {
              private static final long serialVersionUID = 208585707945686116L;
          };
          final Boolean[] interrupted = { null };
  
          assertFalse(task.isDisposed());
  
          task.dispose();
  
          assertTrue(task.isDisposed());
  
          task.dispose();
  
          assertTrue(task.isDisposed());
  
          FutureTask<Void> ft = new FutureTask<Void>(Functions.EMPTY_RUNNABLE, null) {
              @Override
              public boolean cancel(boolean mayInterruptIfRunning) {
                  interrupted[0] = mayInterruptIfRunning;
                  return super.cancel(mayInterruptIfRunning);
              }
          };
          task.setFuture(ft);
  
          assertTrue(interrupted[0]);
  
          assertTrue(task.isDisposed());
      }
  
      @Test
      public void cancelSetFutureCurrentThread() {
          AbstractDirectTask task = new AbstractDirectTask(Functions.EMPTY_RUNNABLE, true) {
              private static final long serialVersionUID = 208585707945686116L;
          };
          final Boolean[] interrupted = { null };
  
          assertFalse(task.isDisposed());
  
          task.runner = Thread.currentThread();
  
          task.dispose();
  
          assertTrue(task.isDisposed());
  
          task.dispose();
  
          assertTrue(task.isDisposed());
  
          FutureTask<Void> ft = new FutureTask<Void>(Functions.EMPTY_RUNNABLE, null) {
              @Override
              public boolean cancel(boolean mayInterruptIfRunning) {
                  interrupted[0] = mayInterruptIfRunning;
                  return super.cancel(mayInterruptIfRunning);
              }
          };
          task.setFuture(ft);
  
          assertFalse(interrupted[0]);
  
          assertTrue(task.isDisposed());
      }
  
      @Test
      public void setFutureCancel() {
          AbstractDirectTask task = new AbstractDirectTask(Functions.EMPTY_RUNNABLE, true) {
              private static final long serialVersionUID = 208585707945686116L;
          };
          final Boolean[] interrupted = { null };
  
          FutureTask<Void> ft = new FutureTask<Void>(Functions.EMPTY_RUNNABLE, null) {
              @Override
              public boolean cancel(boolean mayInterruptIfRunning) {
                  interrupted[0] = mayInterruptIfRunning;
                  return super.cancel(mayInterruptIfRunning);
              }
          };
  
          assertFalse(task.isDisposed());
  
          task.setFuture(ft);
  
          assertFalse(task.isDisposed());
  
          task.dispose();
  
          assertTrue(task.isDisposed());
  
          assertTrue(interrupted[0]);
      }
  
      @Test
      public void setFutureCancelSameThread() {
          AbstractDirectTask task = new AbstractDirectTask(Functions.EMPTY_RUNNABLE, true) {
              private static final long serialVersionUID = 208585707945686116L;
          };
          final Boolean[] interrupted = { null };
  
          FutureTask<Void> ft = new FutureTask<Void>(Functions.EMPTY_RUNNABLE, null) {
              @Override
              public boolean cancel(boolean mayInterruptIfRunning) {
                  interrupted[0] = mayInterruptIfRunning;
                  return super.cancel(mayInterruptIfRunning);
              }
          };
          assertFalse(task.isDisposed());
  
          task.setFuture(ft);
  
          task.runner = Thread.currentThread();
  
          assertFalse(task.isDisposed());
  
          task.dispose();
  
          assertTrue(task.isDisposed());
  
          assertFalse(interrupted[0]);
      }
  
      @Test
      public void finished() {
          AbstractDirectTask task = new AbstractDirectTask(Functions.EMPTY_RUNNABLE, true) {
              private static final long serialVersionUID = 208585707945686116L;
          };
          final Boolean[] interrupted = { null };
          FutureTask<Void> ft = new FutureTask<Void>(Functions.EMPTY_RUNNABLE, null) {
              @Override
              public boolean cancel(boolean mayInterruptIfRunning) {
                  interrupted[0] = mayInterruptIfRunning;
                  return super.cancel(mayInterruptIfRunning);
              }
          };
  
          task.set(AbstractDirectTask.FINISHED);
  
          task.setFuture(ft);
  
          assertTrue(task.isDisposed());
  
          assertNull(interrupted[0]);
  
          task.dispose();
  
          assertTrue(task.isDisposed());
  
          assertNull(interrupted[0]);
      }
  
      @Test
      public void finishedCancel() {
          AbstractDirectTask task = new AbstractDirectTask(Functions.EMPTY_RUNNABLE, true) {
              private static final long serialVersionUID = 208585707945686116L;
          };
          final Boolean[] interrupted = { null };
          FutureTask<Void> ft = new FutureTask<Void>(Functions.EMPTY_RUNNABLE, null) {
              @Override
              public boolean cancel(boolean mayInterruptIfRunning) {
                  interrupted[0] = mayInterruptIfRunning;
                  return super.cancel(mayInterruptIfRunning);
              }
          };
  
          task.set(AbstractDirectTask.FINISHED);
  
          assertTrue(task.isDisposed());
  
          task.dispose();
  
          assertTrue(task.isDisposed());
  
          task.setFuture(ft);
  
          assertTrue(task.isDisposed());
  
          assertNull(interrupted[0]);
  
          assertTrue(task.isDisposed());
  
          assertNull(interrupted[0]);
      }
  
      @Test
      public void disposeSetFutureRace() {
          for (int i = 0; i < TestHelper.RACE_DEFAULT_LOOPS; i++) {
              final AbstractDirectTask task = new AbstractDirectTask(Functions.EMPTY_RUNNABLE, true) {
                  private static final long serialVersionUID = 208585707945686116L;
              };
  
              final Boolean[] interrupted = { null };
              final FutureTask<Void> ft = new FutureTask<Void>(Functions.EMPTY_RUNNABLE, null) {
                  @Override
                  public boolean cancel(boolean mayInterruptIfRunning) {
                      interrupted[0] = mayInterruptIfRunning;
                      return super.cancel(mayInterruptIfRunning);
                  }
              };
  
              Runnable r1 = new Runnable() {
                  @Override
                  public void run() {
                      task.dispose();
                  }
              };
  
              Runnable r2 = new Runnable() {
                  @Override
                  public void run() {
                      task.setFuture(ft);
                  }
              };
  
              TestHelper.race(r1, r2);
          }
      }
  
      static class TestDirectTask extends AbstractDirectTask {
          private static final long serialVersionUID = 587679821055711738L;
  
          TestDirectTask() {
              super(Functions.EMPTY_RUNNABLE, true);
          }
      }
  
      @Test
      public void toStringStates() {
          TestDirectTask task = new TestDirectTask();
  
          assertEquals("TestDirectTask[Waiting]", task.toString());
  
          task.runner = Thread.currentThread();
  
          assertEquals("TestDirectTask[Running on " + Thread.currentThread() + "]", task.toString());
  
          task.dispose();
  
          assertEquals("TestDirectTask[Disposed]", task.toString());
  
          task.set(AbstractDirectTask.FINISHED);
  
          assertEquals("TestDirectTask[Finished]", task.toString());
      }
  }
  