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.TimeUnit;
  
  import org.junit.Test;
  
  import io.reactivex.rxjava3.core.RxJavaTest;
  import io.reactivex.rxjava3.core.Scheduler.Worker;
  import io.reactivex.rxjava3.internal.functions.Functions;
  
  public class ImmediateThinSchedulerTest extends RxJavaTest {
  
      @Test
      public void scheduleDirect() {
          final int[] count = { 0 };
  
          ImmediateThinScheduler.INSTANCE.scheduleDirect(new Runnable() {
              @Override
              public void run() {
                  count[0]++;
              }
          });
  
          assertEquals(1, count[0]);
      }
  
      @Test(expected = UnsupportedOperationException.class)
      public void scheduleDirectTimed() {
          ImmediateThinScheduler.INSTANCE.scheduleDirect(Functions.EMPTY_RUNNABLE, 1, TimeUnit.SECONDS);
      }
  
      @Test(expected = UnsupportedOperationException.class)
      public void scheduleDirectPeriodic() {
          ImmediateThinScheduler.INSTANCE.schedulePeriodicallyDirect(Functions.EMPTY_RUNNABLE, 1, 1, TimeUnit.SECONDS);
      }
  
      @Test
      public void schedule() {
          final int[] count = { 0 };
  
          Worker w = ImmediateThinScheduler.INSTANCE.createWorker();
  
          assertFalse(w.isDisposed());
  
          w.schedule(new Runnable() {
              @Override
              public void run() {
                  count[0]++;
              }
          });
  
          assertEquals(1, count[0]);
      }
  
      @Test(expected = UnsupportedOperationException.class)
      public void scheduleTimed() {
          ImmediateThinScheduler.INSTANCE.createWorker().schedule(Functions.EMPTY_RUNNABLE, 1, TimeUnit.SECONDS);
      }
  
      @Test(expected = UnsupportedOperationException.class)
      public void schedulePeriodic() {
          ImmediateThinScheduler.INSTANCE.createWorker().schedulePeriodically(Functions.EMPTY_RUNNABLE, 1, 1, TimeUnit.SECONDS);
      }
  }
  