/**
    *    Copyright 2009-2020 the original author or authors.
    *
    *    Licensed 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.ibatis.parsing;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  import java.io.BufferedReader;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.Reader;
  
  import javax.xml.parsers.DocumentBuilder;
  import javax.xml.parsers.DocumentBuilderFactory;
  
  import org.apache.ibatis.builder.BuilderException;
  import org.apache.ibatis.io.Resources;
  import org.junit.jupiter.api.Test;
  import org.w3c.dom.Document;
  import org.xml.sax.InputSource;
  
  class XPathParserTest {
    private String resource = "resources/nodelet_test.xml";
  
    // InputStream Source
    @Test
    void constructorWithInputStreamValidationVariablesEntityResolver() throws Exception {
  
      try (InputStream inputStream = Resources.getResourceAsStream(resource)) {
        XPathParser parser = new XPathParser(inputStream, false, null, null);
        testEvalMethod(parser);
      }
    }
  
    @Test
    void constructorWithInputStreamValidationVariables() throws IOException {
      try (InputStream inputStream = Resources.getResourceAsStream(resource)) {
        XPathParser parser = new XPathParser(inputStream, false, null);
        testEvalMethod(parser);
      }
    }
  
    @Test
    void constructorWithInputStreamValidation() throws IOException {
      try (InputStream inputStream = Resources.getResourceAsStream(resource)) {
        XPathParser parser = new XPathParser(inputStream, false);
        testEvalMethod(parser);
      }
    }
  
    @Test
    void constructorWithInputStream() throws IOException {
      try (InputStream inputStream = Resources.getResourceAsStream(resource)) {
        XPathParser parser = new XPathParser(inputStream);
        testEvalMethod(parser);
      }
    }
  
    // Reader Source
    @Test
    void constructorWithReaderValidationVariablesEntityResolver() throws Exception {
  
      try (Reader reader = Resources.getResourceAsReader(resource)) {
        XPathParser parser = new XPathParser(reader, false, null, null);
        testEvalMethod(parser);
      }
    }
  
    @Test
    void constructorWithReaderValidationVariables() throws IOException {
      try (Reader reader = Resources.getResourceAsReader(resource)) {
        XPathParser parser = new XPathParser(reader, false, null);
        testEvalMethod(parser);
      }
    }
  
    @Test
    void constructorWithReaderValidation() throws IOException {
      try (Reader reader = Resources.getResourceAsReader(resource)) {
        XPathParser parser = new XPathParser(reader, false);
        testEvalMethod(parser);
      }
    }
  
    @Test
    void constructorWithReader() throws IOException {
      try (Reader reader = Resources.getResourceAsReader(resource)) {
       XPathParser parser = new XPathParser(reader);
       testEvalMethod(parser);
     }
   }
 
   // Xml String Source
   @Test
   void constructorWithStringValidationVariablesEntityResolver() throws Exception {
     XPathParser parser = new XPathParser(getXmlString(resource), false, null, null);
     testEvalMethod(parser);
   }
 
   @Test
   void constructorWithStringValidationVariables() throws IOException {
     XPathParser parser = new XPathParser(getXmlString(resource), false, null);
     testEvalMethod(parser);
   }
 
   @Test
   void constructorWithStringValidation() throws IOException {
     XPathParser parser = new XPathParser(getXmlString(resource), false);
     testEvalMethod(parser);
   }
 
   @Test
   void constructorWithString() throws IOException {
     XPathParser parser = new XPathParser(getXmlString(resource));
     testEvalMethod(parser);
   }
 
   // Document Source
   @Test
   void constructorWithDocumentValidationVariablesEntityResolver() {
     XPathParser parser = new XPathParser(getDocument(resource), false, null, null);
     testEvalMethod(parser);
   }
 
   @Test
   void constructorWithDocumentValidationVariables() {
     XPathParser parser = new XPathParser(getDocument(resource), false, null);
     testEvalMethod(parser);
   }
 
   @Test
   void constructorWithDocumentValidation() {
     XPathParser parser = new XPathParser(getDocument(resource), false);
     testEvalMethod(parser);
   }
 
   @Test
   void constructorWithDocument() {
     XPathParser parser = new XPathParser(getDocument(resource));
     testEvalMethod(parser);
   }
 
   private Document getDocument(String resource) {
     try {
       InputSource inputSource = new InputSource(Resources.getResourceAsReader(resource));
       DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
       factory.setNamespaceAware(false);
       factory.setIgnoringComments(true);
       factory.setIgnoringElementContentWhitespace(false);
       factory.setCoalescing(false);
       factory.setExpandEntityReferences(true);
       DocumentBuilder builder = factory.newDocumentBuilder();
       return builder.parse(inputSource);// already closed resource in builder.parse method
     } catch (Exception e) {
       throw new BuilderException("Error creating document instance.  Cause: " + e, e);
     }
   }
 
   private String getXmlString(String resource) throws IOException {
     try (BufferedReader bufferedReader = new BufferedReader(Resources.getResourceAsReader(resource))) {
       StringBuilder sb = new StringBuilder();
       String temp;
       while ((temp = bufferedReader.readLine()) != null) {
         sb.append(temp);
       }
       return sb.toString();
     }
   }
 
   private void testEvalMethod(XPathParser parser) {
     assertEquals((Long) 1970L, parser.evalLong("/employee/birth_date/year"));
     assertEquals((short) 6, (short) parser.evalShort("/employee/birth_date/month"));
     assertEquals((Integer) 15, parser.evalInteger("/employee/birth_date/day"));
     assertEquals((Float) 5.8f, parser.evalFloat("/employee/height"));
     assertEquals((Double) 5.8d, parser.evalDouble("/employee/height"));
     assertEquals("${id_var}", parser.evalString("/employee/@id"));
     assertEquals(Boolean.TRUE, parser.evalBoolean("/employee/active"));
     assertEquals("<id>${id_var}</id>", parser.evalNode("/employee/@id").toString().trim());
     assertEquals(7, parser.evalNodes("/employee/*").size());
     XNode node = parser.evalNode("/employee/height");
     assertEquals("employee/height", node.getPath());
     assertEquals("employee[${id_var}]_height", node.getValueBasedIdentifier());
   }
 
   @Test
   public void formatXNodeToString() {
     XPathParser parser = new XPathParser("<users><user><id>100</id><name>Tom</name><age>30</age><cars><car>BMW</car><car>Audi</car><car>Benz</car></cars></user></users>");
     String usersNodeToString = parser.evalNode("/users").toString();
     String userNodeToString = parser.evalNode("/users/user").toString();
     String carsNodeToString = parser.evalNode("/users/user/cars").toString();
 
     String usersNodeToStringExpect =
       "<users>\n" +
       "    <user>\n" +
       "        <id>100</id>\n" +
       "        <name>Tom</name>\n" +
       "        <age>30</age>\n" +
       "        <cars>\n" +
       "            <car>BMW</car>\n" +
       "            <car>Audi</car>\n" +
       "            <car>Benz</car>\n" +
       "        </cars>\n" +
       "    </user>\n" +
       "</users>\n";
 
     String userNodeToStringExpect =
       "<user>\n" +
       "    <id>100</id>\n" +
       "    <name>Tom</name>\n" +
       "    <age>30</age>\n" +
       "    <cars>\n" +
       "        <car>BMW</car>\n" +
       "        <car>Audi</car>\n" +
       "        <car>Benz</car>\n" +
       "    </cars>\n" +
       "</user>\n";
 
   String carsNodeToStringExpect =
       "<cars>\n" +
       "    <car>BMW</car>\n" +
       "    <car>Audi</car>\n" +
       "    <car>Benz</car>\n" +
       "</cars>\n";
 
     assertEquals(usersNodeToStringExpect, usersNodeToString);
     assertEquals(userNodeToStringExpect, userNodeToString);
     assertEquals(carsNodeToStringExpect, carsNodeToString);
   }
 
 }