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.causeway.applib.services.exceprecog;
  
  import java.util.Optional;
  import java.util.function.Function;
  
  import org.junit.jupiter.api.Test;
  
  import static org.hamcrest.CoreMatchers.is;
  import static org.hamcrest.MatcherAssert.assertThat;
  
  public class ExceptionRecognizerForTypeTest {
  
      private ExceptionRecognizer ersForType;
  
      static class FooException extends Exception {
          private static final long serialVersionUID = 1L;
          public FooException() {
              super("foo");
          }
  
      }
      static class BarException extends Exception {
          private static final long serialVersionUID = 1L;
          public BarException() {
              super("bar");
          }
      }
  
      private Function<Throwable, String> rootCauseMessageFormatter = ex -> "pre: " + ex.getMessage();
  
      @Test
      public void whenRecognized() {
          ersForType = new ExceptionRecognizerForType(FooException.class);
          assertThat(ersForType.recognize(new FooException()).get().reason(), is("foo"));
      }
  
      @Test
      public void whenDoesNotRecognize() {
          ersForType = new ExceptionRecognizerForType(FooException.class);
          assertThat(ersForType.recognize(new BarException()), is(Optional.empty()));
      }
  
      @Test
      public void whenRecognizedWithMessageParser() {
          ersForType = new ExceptionRecognizerForType(FooException.class, rootCauseMessageFormatter);
          assertThat(ersForType.recognize(new FooException()).get().reason(), is("pre: foo"));
      }
  
  }
  