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 org.apache.bookkeeper.common.util;
  
  import static org.apache.bookkeeper.common.util.ReflectionUtils.forName;
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertTrue;
  import static org.junit.Assert.fail;
  
  import org.junit.Test;
  
  /**
   * Unit test of {@link ReflectionUtils}.
   */
  public class TestReflectionUtils {
  
      interface InterfaceA {
      }
  
      interface InterfaceB {
      }
  
      private static class ClassA implements InterfaceA {
      }
  
      private static class ClassB implements InterfaceB {
      }
  
      @Test
      public void testForNameClassNotFound() {
          try {
              forName(
                  "test.for.name.class.not.found",
                  Object.class);
              fail("Should fail if class not found");
          } catch (RuntimeException re) {
              assertTrue(re.getCause() instanceof ClassNotFoundException);
          }
      }
  
      @Test
      public void testForNameUnassignable() {
          try {
              forName(
                  ClassA.class.getName(),
                  InterfaceB.class);
              fail("Should fail if class is not assignable");
          } catch (RuntimeException re) {
              assertEquals(
                  ClassA.class.getName() + " not " + InterfaceB.class.getName(),
                  re.getMessage());
          }
      }
  
      @Test
      public void testForName() throws Exception {
          Class<? extends InterfaceB> theCls = forName(
              ClassB.class.getName(),
              InterfaceB.class);
          assertEquals(ClassB.class, theCls);
      }
  
  }
  