////////////////////////////////////////////////////////////////////////////////
   // checkstyle: Checks Java source code for adherence to a set of rules.
   // Copyright (C) 2001-2019 the original author or authors.
   //
   // This library is free software; you can redistribute it and/or
   // modify it under the terms of the GNU Lesser General Public
   // License as published by the Free Software Foundation; either
   // version 2.1 of the License, or (at your option) any later version.
   //
  // This library is distributed in the hope that it will be useful,
  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  // Lesser General Public License for more details.
  //
  // You should have received a copy of the GNU Lesser General Public
  // License along with this library; if not, write to the Free Software
  // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  ////////////////////////////////////////////////////////////////////////////////
  
  package com.puppycrawl.tools.checkstyle.gui;
  
  import java.io.File;
  import java.util.ArrayList;
  import java.util.List;
  
  import org.junit.Assert;
  import org.junit.Before;
  import org.junit.Test;
  
  import com.google.common.collect.ImmutableList;
  import com.puppycrawl.tools.checkstyle.AbstractPathTestSupport;
  import com.puppycrawl.tools.checkstyle.api.DetailAST;
  import com.puppycrawl.tools.checkstyle.api.DetailNode;
  import com.puppycrawl.tools.checkstyle.gui.MainFrameModel.ParseMode;
  
  public class CodeSelectorPresentationTest extends AbstractPathTestSupport {
  
      private MainFrameModel model;
  
      private DetailAST tree;
  
      private ImmutableList<Integer> linesToPosition;
  
      @Before
      public void loadFile() throws Exception {
          model = new MainFrameModel();
          model.setParseMode(ParseMode.JAVA_WITH_JAVADOC_AND_COMMENTS);
          model.openFile(new File(getPath("InputCodeSelectorPresentation.java")));
          tree = ((DetailAST) model.getParseTreeTableModel().getRoot())
                  .getFirstChild().getNextSibling();
          linesToPosition = ImmutableList.copyOf(convertLinesToPosition(model.getLinesToPosition()));
      }
  
      @Override
      protected String getPackageLocation() {
          return "com/puppycrawl/tools/checkstyle/gui/codeselectorpresentation";
      }
  
      /** Converts lineToPosition from multicharacter to one character line separator
        * needs to support crossplatform line separators.
        * @param systemLinesToPosition lines to position mapping for current system
        * @return lines to position mapping with one character line separator
        */
      private static List<Integer> convertLinesToPosition(List<Integer> systemLinesToPosition) {
          final List<Integer> convertedLinesToPosition = new ArrayList<>();
          final int lineSeparationCorrection = System.lineSeparator().length() - 1;
          convertedLinesToPosition.add(0, systemLinesToPosition.get(0));
          for (int i = 1; i < systemLinesToPosition.size(); i++) {
              convertedLinesToPosition.add(i,
                      systemLinesToPosition.get(i) - lineSeparationCorrection * (i - 1));
          }
          return convertedLinesToPosition;
      }
  
      @Test
      public void testDetailASTSelection() {
          final CodeSelectorPresentation selector = new CodeSelectorPresentation(tree,
                  linesToPosition);
          selector.findSelectionPositions();
          Assert.assertEquals("Invalid selection start", 94, selector.getSelectionStart());
          Assert.assertEquals("Invalid selection end", 280, selector.getSelectionEnd());
      }
  
      @Test
      public void testDetailASTLeafSelection() {
          final DetailAST leaf = tree.getLastChild().getFirstChild();
          final CodeSelectorPresentation selector = new CodeSelectorPresentation(leaf,
                  linesToPosition);
          selector.findSelectionPositions();
          Assert.assertEquals("Invalid selection start", 130, selector.getSelectionStart());
          Assert.assertEquals("Invalid selection end", 131, selector.getSelectionEnd());
      }
  
      @Test
      public void testDetailASTNoSelection() {
          final DetailAST leaf = tree.getFirstChild();
          final CodeSelectorPresentation selector = new CodeSelectorPresentation(leaf,
                  linesToPosition);
          selector.findSelectionPositions();
         Assert.assertEquals("Invalid selection start", 94, selector.getSelectionStart());
         Assert.assertEquals("Invalid selection end", 94, selector.getSelectionEnd());
     }
 
     @Test
     public void testDetailNodeSelection() {
         final DetailNode javadoc = (DetailNode) model.getParseTreeTableModel()
                 .getChild(tree.getFirstChild().getNextSibling().getFirstChild(), 0);
         final CodeSelectorPresentation selector = new CodeSelectorPresentation(javadoc,
                 linesToPosition);
         selector.findSelectionPositions();
         Assert.assertEquals("Invalid selection start", 74, selector.getSelectionStart());
         Assert.assertEquals("Invalid selection end", 96, selector.getSelectionEnd());
     }
 
     @Test
     public void testDetailNodeLeafSelection() {
         final DetailNode javadoc = (DetailNode) model.getParseTreeTableModel()
                 .getChild(tree.getFirstChild().getNextSibling().getFirstChild(), 0);
         final DetailNode javadocLeaf = javadoc.getChildren()[2];
         final CodeSelectorPresentation selector = new CodeSelectorPresentation(javadocLeaf,
                 linesToPosition);
         selector.findSelectionPositions();
         Assert.assertEquals("Invalid selection start", 76, selector.getSelectionStart());
         Assert.assertEquals("Invalid selection end", 90, selector.getSelectionEnd());
     }
 
 }