content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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 com.datastax.oss.driver.internal.core.util.concurrent;
  
  import static com.datastax.oss.driver.Assertions.assertThat;
  
  import com.datastax.oss.driver.internal.core.util.concurrent.ScheduledTaskCapturingEventLoop.CapturedTask;
  import io.netty.util.concurrent.ScheduledFuture;
  import java.util.concurrent.TimeUnit;
  import java.util.concurrent.atomic.AtomicBoolean;
  import org.junit.Test;
  
  public class ScheduledTaskCapturingEventLoopTest {
  
    @Test
    public void should_capture_task_and_let_test_complete_it_manually() {
      ScheduledTaskCapturingEventLoop eventLoop = new ScheduledTaskCapturingEventLoop(null);
      final AtomicBoolean ran = new AtomicBoolean();
      ScheduledFuture<?> future = eventLoop.schedule(() -> ran.set(true), 1, TimeUnit.NANOSECONDS);
  
      assertThat(future.isDone()).isFalse();
      assertThat(future.isCancelled()).isFalse();
      assertThat(ran.get()).isFalse();
  
      CapturedTask<?> task = eventLoop.nextTask();
      assertThat(task.getInitialDelay(TimeUnit.NANOSECONDS)).isEqualTo(1);
  
      task.run();
  
      assertThat(future.isDone()).isTrue();
      assertThat(future.isCancelled()).isFalse();
      assertThat(ran.get()).isTrue();
    }
  
    @Test
    public void should_let_tested_code_cancel_future() {
      ScheduledTaskCapturingEventLoop eventLoop = new ScheduledTaskCapturingEventLoop(null);
      final AtomicBoolean ran = new AtomicBoolean();
      ScheduledFuture<?> future = eventLoop.schedule(() -> ran.set(true), 1, TimeUnit.NANOSECONDS);
  
      assertThat(future.isDone()).isFalse();
      assertThat(future.isCancelled()).isFalse();
      assertThat(ran.get()).isFalse();
  
      future.cancel(true);
  
      assertThat(future.isDone()).isTrue();
      assertThat(future.isCancelled()).isTrue();
      assertThat(ran.get()).isFalse();
    }
  }
  