/*
    * 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
    *
    *      https://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.commons.beanutils2;
  
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.beans.IntrospectionException;
  import java.beans.PropertyDescriptor;
  import java.net.URI;
  import java.util.HashMap;
  import java.util.Map;
  
  import org.junit.jupiter.api.Test;
  
  /**
   * Test class for {@code FluentPropertyBeanIntrospector}.
   */
  public class FluentPropertyBeanIntrospectorTest {
      public static final class CapsBean {
          private URI mURI;
  
          public URI getURI() {
              return mURI;
          }
  
          public void setURI(final URI theURI) {
              mURI = theURI;
          }
      }
  
      /**
       * Puts all property descriptors into a map so that they can be accessed by property name.
       *
       * @param descs the array with descriptors
       * @return a map with property names as keys
       */
      private static Map<String, PropertyDescriptor> createDescriptorMap(final PropertyDescriptor[] descs) {
          final Map<String, PropertyDescriptor> map = new HashMap<>();
          for (final PropertyDescriptor pd : descs) {
              map.put(pd.getName(), pd);
          }
          return map;
      }
  
      /**
       * Convenience method for obtaining a specific property descriptor and checking whether it exists.
       *
       * @param props the map with property descriptors
       * @param name  the name of the desired descriptor
       * @return the descriptor from the map
       */
      private static PropertyDescriptor fetchDescriptor(final Map<String, PropertyDescriptor> props, final String name) {
          assertTrue(props.containsKey(name), "Property not found: " + name);
          return props.get(name);
      }
  
      /**
       * Tries to create an instance without a prefix for write methods.
       */
      @Test
      public void testInitNoPrefix() {
          assertThrows(NullPointerException.class, () -> new FluentPropertyBeanIntrospector(null));
      }
  
      /**
       * Tests whether correct property descriptors are detected.
       */
      @Test
      public void testIntrospection() throws IntrospectionException {
          final PropertyUtilsBean pu = new PropertyUtilsBean();
          final FluentPropertyBeanIntrospector introspector = new FluentPropertyBeanIntrospector();
          pu.addBeanIntrospector(introspector);
          final Map<String, PropertyDescriptor> props = createDescriptorMap(pu.getPropertyDescriptors(FluentIntrospectionTestBean.class));
          PropertyDescriptor pd = fetchDescriptor(props, "name");
          assertNotNull(pd.getReadMethod(), "No read method for name");
          assertNotNull(pd.getWriteMethod(), "No write method for name");
          fetchDescriptor(props, "stringProperty");
          pd = fetchDescriptor(props, "fluentProperty");
          assertNull(pd.getReadMethod(), "Read method for fluentProperty");
          assertNotNull(pd.getWriteMethod(), "No write method for fluentProperty");
          pd = fetchDescriptor(props, "fluentGetProperty");
          assertNotNull(pd.getReadMethod(), "No read method for fluentGetProperty");
         assertNotNull(pd.getWriteMethod(), "No write method for fluentGetProperty");
     }
 
     @Test
     public void testIntrospectionCaps() throws Exception {
         final PropertyUtilsBean pu = new PropertyUtilsBean();
 
         final FluentPropertyBeanIntrospector introspector = new FluentPropertyBeanIntrospector();
 
         pu.addBeanIntrospector(introspector);
 
         final Map<String, PropertyDescriptor> props = createDescriptorMap(pu.getPropertyDescriptors(CapsBean.class));
 
         final PropertyDescriptor aDescriptor = fetchDescriptor(props, "URI");
 
         assertNotNull(aDescriptor, "missing property");
 
         assertNotNull(aDescriptor.getReadMethod(), "No read method for uri");
         assertNotNull(aDescriptor.getWriteMethod(), "No write method for uri");
 
         assertNull(props.get("uRI"), "Should not find mis-capitalized property");
     }
 }