/*
    * 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
    *
   *   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.maven.enforcer.rules.checksum;
  
  import java.io.IOException;
  import java.io.Reader;
  import java.io.StringReader;
  
  import org.apache.commons.io.IOUtils;
  import org.apache.maven.enforcer.rules.checksum.NormalizeLineSeparatorReader.LineSeparator;
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  class TestNormalizeLineSeparatorReader {
      private static final String UNIX_MULTILINE_STRING = "line1\nline2\n\n";
  
      private static final String WINDOWS_MULTILINE_STRING = "line1\r\nline2\r\n\r\n";
  
      @Test
      void testUnixToWindows() throws IOException {
          try (Reader reader =
                  new NormalizeLineSeparatorReader(new StringReader(UNIX_MULTILINE_STRING), LineSeparator.WINDOWS)) {
              assertEquals(WINDOWS_MULTILINE_STRING, IOUtils.toString(reader));
          }
      }
  
      @Test
      void testUnixToUnix() throws IOException {
          try (Reader reader =
                  new NormalizeLineSeparatorReader(new StringReader(UNIX_MULTILINE_STRING), LineSeparator.UNIX)) {
              assertEquals(UNIX_MULTILINE_STRING, IOUtils.toString(reader));
          }
      }
  
      @Test
      void testWindowsToUnix() throws IOException {
          try (Reader reader =
                  new NormalizeLineSeparatorReader(new StringReader(WINDOWS_MULTILINE_STRING), LineSeparator.UNIX)) {
              assertEquals(UNIX_MULTILINE_STRING, IOUtils.toString(reader));
          }
      }
  
      @Test
      void testWindowsToWindows() throws IOException {
          try (Reader reader =
                  new NormalizeLineSeparatorReader(new StringReader(WINDOWS_MULTILINE_STRING), LineSeparator.WINDOWS)) {
              assertEquals(WINDOWS_MULTILINE_STRING, IOUtils.toString(reader));
          }
      }
  }