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.operators.single;
  
  import java.util.concurrent.*;
  
  import org.junit.Test;
  
  import io.reactivex.rxjava3.core.*;
  import io.reactivex.rxjava3.schedulers.Schedulers;
  
  public class SingleFromTest extends RxJavaTest {
  
      @Test
      public void fromFuture() throws Exception {
          Single.fromFuture(Flowable.just(1).toFuture())
          .subscribeOn(Schedulers.io())
          .test()
          .awaitDone(5, TimeUnit.SECONDS)
          .assertResult(1);
      }
  
      @Test
      public void fromFutureTimeout() throws Exception {
          Single.fromFuture(Flowable.never().toFuture(), 1, TimeUnit.SECONDS)
          .subscribeOn(Schedulers.io())
          .test()
          .awaitDone(5, TimeUnit.SECONDS)
          .assertFailure(TimeoutException.class);
      }
  
      @Test
      public void fromPublisher() {
          Single.fromPublisher(Flowable.just(1))
          .test()
          .assertResult(1);
      }
  }
  