/*
    * 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.xml.secure;
  
  import static org.junit.jupiter.api.Assertions.assertNotSame;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertSame;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.when;
  
  import java.lang.reflect.InvocationTargetException;
  import java.lang.reflect.Method;
  
  import javax.xml.parsers.DocumentBuilderFactory;
  import javax.xml.parsers.ParserConfigurationException;
  import javax.xml.transform.TransformerException;
  import javax.xml.transform.URIResolver;
  import javax.xml.transform.dom.DOMSource;
  
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.condition.DisabledInNativeImage;
  import org.w3c.dom.Document;
  
  class FallbackIgnoreURIResolverTest {
  
      @Test
      // Mockito generates the mock class and its plugin proxies at run time — impossible in a closed-world native image,
      // so the stubbed factory this error path needs cannot be built there.
      @DisabledInNativeImage
      void newEmptyDocumentWrapsConfigurationFailure() throws Exception {
          final DocumentBuilderFactory factory = mock(DocumentBuilderFactory.class);
          final ParserConfigurationException failure = new ParserConfigurationException("test");
          when(factory.newDocumentBuilder()).thenThrow(failure);
          final Method method = FallbackIgnoreURIResolver.class.getDeclaredMethod("newEmptyDocument", DocumentBuilderFactory.class);
          method.setAccessible(true);
          final InvocationTargetException exception = assertThrows(InvocationTargetException.class, () -> method.invoke(null, factory));
          final IllegalStateException error = (IllegalStateException) exception.getCause();
          assertSame(failure, error.getCause());
      }
  
      @Test
      void resolvesDelegatedAndFallbackSources() throws Exception {
          final DOMSource empty = new DOMSource();
          final FallbackIgnoreURIResolver resolver = new FallbackIgnoreURIResolver(null, () -> empty, () -> false);
          assertSame(empty, resolver.resolve("href", "base"));
          final DOMSource delegated = new DOMSource();
          final URIResolver delegate = (href, base) -> delegated;
          resolver.setDelegate(delegate);
          assertSame(delegate, resolver.getDelegate());
          assertSame(delegated, resolver.resolve("href", "base"));
          resolver.setDelegate(null);
          System.setProperty(SecureException.THROW_ON_UNRESOLVED, "true");
          try {
              assertThrows(TransformerException.class, () -> resolver.resolve("href", "base"));
          } finally {
              System.clearProperty(SecureException.THROW_ON_UNRESOLVED);
          }
      }
  
      @Test
      void resolvesFreshEmptyDocumentPerResolution() throws Exception {
          final FallbackIgnoreURIResolver resolver = new FallbackIgnoreURIResolver(null, null, () -> false);
          final Document first = (Document) ((DOMSource) resolver.resolve("href", "base")).getNode();
          assertNull(first.getDocumentElement());
          first.appendChild(first.createElement("planted"));
          final Document second = (Document) ((DOMSource) resolver.resolve("href", "base")).getNode();
          assertNotSame(first, second);
          assertNull(second.getDocumentElement());
      }
  }