/*
    * Copyright 2005,2009 Ivan SZKIBA
    *
    * 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.ini4j.spi;
  
  import org.ini4j.Ini4jCase;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNull;
  
  import org.junit.Before;
  import org.junit.Test;
  
  public class EscapeToolTest extends Ini4jCase
  {
      private static final String VALUE1 = "simple";
      private static final String ESCAPE1 = "simple";
      private static final String VALUE2 = "Iv\ufffdn";
      private static final String ESCAPE2 = "Iv\\ufffdn";
      private static final String VALUE3 = "1\t2\n3\f4\b5\r6";
      private static final String ESCAPE3 = "1\\t2\\n3\\f4\\b5\\r6";
      private static final String VALUE4 = "Iv\u0017n";
      private static final String ESCAPE4 = "Iv\\u0017n";
      private static final String INVALID_UNICODE = "\\u98x";
      private static final String UNQUOTED1 = "simple";
      private static final String QUOTED1 = "\"simple\"";
      private static final String UNQUOTED2 = "no\\csak\"";
      private static final String QUOTED2 = "\"no\\\\csak\\\"\"";
      private static final String UNQUOTED3 = "";
      private static final String QUOTED3 = "";
      protected EscapeTool instance;
  
      @Before @Override public void setUp() throws Exception
      {
          super.setUp();
          instance = EscapeTool.getInstance();
      }
  
      @Test public void testEscape() throws Exception
      {
          assertEquals(ESCAPE1, instance.escape(VALUE1));
          assertEquals(ESCAPE2, instance.escape(VALUE2));
          assertEquals(ESCAPE3, instance.escape(VALUE3));
          assertEquals(ESCAPE4, instance.escape(VALUE4));
      }
  
      @Test public void testInvalidUnicode()
      {
          try
          {
              instance.unescape(INVALID_UNICODE);
              missing(IllegalArgumentException.class);
          }
          catch (IllegalArgumentException x)
          {
              //
          }
      }
  
      @Test public void testQuote() throws Exception
      {
          assertEquals(QUOTED1, instance.quote(UNQUOTED1));
          assertEquals(QUOTED2, instance.quote(UNQUOTED2));
          assertEquals(QUOTED3, instance.quote(UNQUOTED3));
          assertNull(instance.quote(null));
      }
  
      @Test public void testSingleton() throws Exception
      {
          assertEquals(EscapeTool.class, EscapeTool.getInstance().getClass());
      }
  
      @SuppressWarnings("empty-statement")
      @Test public void testUnescape() throws Exception
      {
          assertEquals(VALUE1, instance.unescape(ESCAPE1));
          assertEquals(VALUE2, instance.unescape(ESCAPE2));
          assertEquals(VALUE3, instance.unescape(ESCAPE3));
          assertEquals(VALUE4, instance.unescape(ESCAPE4));
          assertEquals("=", instance.unescape("\\="));
      }
  }