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.validators;
  
  import static org.junit.Assert.fail;
  
  import java.lang.reflect.*;
  
  import org.junit.Test;
  
  import io.reactivex.rxjava3.core.*;
  
  /**
   * Verifies that instance methods of the base reactive classes are all declared final.
   */
  public class PublicFinalMethods {
  
      static void scan(Class<?> clazz) {
          for (Method m : clazz.getMethods()) {
              if (m.getDeclaringClass() == clazz) {
                  if ((m.getModifiers() & Modifier.STATIC) == 0) {
                      if ((m.getModifiers() & (Modifier.PUBLIC | Modifier.FINAL)) == Modifier.PUBLIC) {
                          fail("Not final: " + m);
                      }
                  }
              }
          }
      }
  
      @Test
      public void flowable() {
          scan(Flowable.class);
      }
  
      @Test
      public void observable() {
          scan(Observable.class);
      }
  
      @Test
      public void single() {
          scan(Single.class);
      }
  
      @Test
      public void completable() {
          scan(Completable.class);
      }
  
      @Test
      public void maybe() {
          scan(Maybe.class);
      }
  }
  