/*
    * 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.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertNull;
  
  import java.beans.PropertyDescriptor;
  import java.lang.reflect.Method;
  import java.util.HashMap;
  import java.util.Map;
  
  import org.junit.jupiter.api.Test;
  
  /**
   * Test class for {@code BeanIntrospectionData}.
   */
  public class BeanIntrospectionDataTest {
      /** Constant for the test bean class. */
      private static final Class<?> BEAN_CLASS = FluentIntrospectionTestBean.class;
  
      /** Constant for the name of the test property. */
      private static final String TEST_PROP = "fluentGetProperty";
  
      /**
       * Creates an array with property descriptors for the test bean class.
       *
       * @return the array with property descriptors
       */
      private static PropertyDescriptor[] fetchDescriptors() {
          final PropertyUtilsBean pub = new PropertyUtilsBean();
          pub.removeBeanIntrospector(SuppressPropertiesBeanIntrospector.SUPPRESS_CLASS);
          pub.addBeanIntrospector(new FluentPropertyBeanIntrospector());
          return pub.getPropertyDescriptors(BEAN_CLASS);
      }
  
      /**
       * Returns the property descriptor for the test property.
       *
       * @param bid the data object
       * @return the test property descriptor
       */
      private static PropertyDescriptor fetchTestDescriptor(final BeanIntrospectionData bid) {
          return bid.getDescriptor(TEST_PROP);
      }
  
      /**
       * Creates a test instance which is initialized with default property descriptors.
       *
       * @return the test instance
       */
      private static BeanIntrospectionData setUpData() {
          return new BeanIntrospectionData(fetchDescriptors());
      }
  
      /**
       * Tests whether a write method can be queried if it is defined in the descriptor.
       */
      @Test
      public void testGetWriteMethodDefined() {
          final BeanIntrospectionData data = setUpData();
          final PropertyDescriptor pd = fetchTestDescriptor(data);
          assertNotNull(pd.getWriteMethod(), "No write method");
          assertEquals(pd.getWriteMethod(), data.getWriteMethod(BEAN_CLASS, pd), "Wrong write method");
      }
  
      /**
       * Tests getWriteMethod() if the method cannot be resolved. (This is a corner case which should normally not happen in practice.)
       */
      @Test
      public void testGetWriteMethodNonExisting() throws Exception {
          final PropertyDescriptor pd = new PropertyDescriptor(TEST_PROP, BEAN_CLASS.getMethod("getFluentGetProperty"),
                  BEAN_CLASS.getMethod("setFluentGetProperty", String.class));
          final Map<String, String> methods = new HashMap<>();
          methods.put(TEST_PROP, "hashCode");
          final BeanIntrospectionData data = new BeanIntrospectionData(new PropertyDescriptor[] { pd }, methods);
          pd.setWriteMethod(null);
          assertNull(data.getWriteMethod(BEAN_CLASS, pd), "Got a write method");
      }
  
      /**
       * Tests whether a write method can be queried that is currently not available in the property descriptor.
       */
      @Test
     public void testGetWriteMethodUndefined() throws Exception {
         final BeanIntrospectionData data = setUpData();
         final PropertyDescriptor pd = fetchTestDescriptor(data);
         final Method writeMethod = pd.getWriteMethod();
         pd.setWriteMethod(null);
         assertEquals(writeMethod, data.getWriteMethod(BEAN_CLASS, pd), "Wrong write method");
         assertEquals(writeMethod, pd.getWriteMethod(), "Method not set in descriptor");
     }
 
     /**
      * Tests getWriteMethod() for a property for which no write method is known.
      */
     @Test
     public void testGetWriteMethodUnknown() {
         final BeanIntrospectionData data = setUpData();
         final PropertyDescriptor pd = data.getDescriptor("class");
         assertNull(data.getWriteMethod(BEAN_CLASS, pd), "Got a write method");
     }
 }