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.flowable;
  
  import static org.junit.Assert.assertEquals;
  
  import java.util.*;
  
  import org.junit.Test;
  
  import io.reactivex.rxjava3.core.*;
  
  public class FlowableStartWithTests extends RxJavaTest {
  
      @Test
      public void startWith1() {
          List<String> values = Flowable.just("one", "two")
                  .startWithArray("zero").toList().blockingGet();
  
          assertEquals("zero", values.get(0));
          assertEquals("two", values.get(2));
      }
  
      @Test
      public void startWithIterable() {
          List<String> li = new ArrayList<>();
          li.add("alpha");
          li.add("beta");
          List<String> values = Flowable.just("one", "two").startWithIterable(li).toList().blockingGet();
  
          assertEquals("alpha", values.get(0));
          assertEquals("beta", values.get(1));
          assertEquals("one", values.get(2));
          assertEquals("two", values.get(3));
      }
  
      @Test
      public void startWithObservable() {
          List<String> li = new ArrayList<>();
          li.add("alpha");
          li.add("beta");
          List<String> values = Flowable.just("one", "two")
                  .startWith(Flowable.fromIterable(li))
                  .toList()
                  .blockingGet();
  
          assertEquals("alpha", values.get(0));
          assertEquals("beta", values.get(1));
          assertEquals("one", values.get(2));
          assertEquals("two", values.get(3));
      }
  
      @Test
      public void startWithEmpty() {
          Flowable.just(1).startWithArray().test().assertResult(1);
      }
  
  }
  