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.conf.validators;
  
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertTrue;
  
  import java.util.function.Function;
  import org.junit.Test;
  
  /**
   * Unit test for {@link ClassValidator}.
   */
  public class ClassValidatorTest {
  
      private static class TestFunction implements Function<String, String> {
  
          @Override
          public String apply(String s) {
              return s + "!";
          }
      }
  
      @Test
      public void testValidateStrings() {
          ClassValidator<Function> validator = ClassValidator.of(Function.class);
          assertTrue(validator.validate("test-valid-classname", TestFunction.class.getName()));
          assertFalse(validator.validate("test-invalid-classname", "unknown"));
      }
  
      @Test
      public void testValidateClass() {
          ClassValidator<Function> validator = ClassValidator.of(Function.class);
          assertTrue(validator.validate("test-valid-class", TestFunction.class));
          assertFalse(validator.validate("test-invalid-class", Integer.class));
      }
  
      @Test
      public void testValidateWrongType() {
          ClassValidator<Function> validator = ClassValidator.of(Function.class);
          assertFalse(validator.validate("test-invalid-type", 12345));
      }
  
  }
  