/**
    * SpamSchutz - simple way to protect your mail addresses from naïve spammers
    * Copyright (C) 2011, Aiki IT
    * <p/>
    * This program is free software: you can redistribute it and/or modify
    * it under the terms of the GNU General Public License as published by
    * the Free Software Foundation, either version 3 of the License, or
    * (at your option) any later version.
    * <p/>
   * This program 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 General Public License for more details.
   * <p/>
   * You should have received a copy of the GNU General Public License
   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
   */
  package de.aikiit.spamprotector.converter;
  
  import org.junit.Test;
  
  import static org.assertj.core.api.Assertions.assertThat;
  
  /**
   * Convert real-world examples in order to avoid regressions.
   */
  public class SpamProtectorTest {
  
      @Test
      public void conversionRoundtripNull() {
          assertThat(SpamProtector.toEncoded(null)).isNull();
          assertThat(SpamProtector.toPlain(null)).isNull();
  
          assertThat(SpamProtector.toEncoded("")).isEmpty();
          assertThat(SpamProtector.toPlain("")).isEmpty();
      }
  
      @Test
      public void conversionExample() {
          assertThat(SpamProtector.toEncoded(" ")).isEqualTo(CharacterConverter.SPACE.getReplacement());
          assertThat(SpamProtector.toPlain("&nbsp;")).isEqualTo(CharacterConverter.SPACE.getPlain());
      }
  
      @Test
      public void singleCharactersAreConverted() {
          assertThat(SpamProtector.toEncoded(String.valueOf(' '))).isEqualTo("&nbsp;");
          assertThat(SpamProtector.toEncoded(" ")).isEqualTo("&nbsp;");
      }
  
      @Test
      public void asciiOnlyIsEncodedCompletelyWithSpacesAndAtSign() {
          String input = "mailto:w oo@suck.er";
          assertThat(SpamProtector.toEncoded(input)).isEqualTo("&#109;&#97;&#105;&#108;&#116;&#111;&#58;&#119;&nbsp;&#111;" +
                  "&#111;&#64;&#115;&#117;&#99;&#107;&#46;&#101;&#114;");
      }
  
      @Test
      public void nonAsciCharactersAreNotEncodedButTheRest() {
          String input = "mailto:wフィリップoo@suck.нетer";
          assertThat(SpamProtector.toEncoded(input)).isEqualTo("&#109;&#97;&#105;&#108;&#116;&#111;&#58;&#119;フィリップ&#111;" +
                  "&#111;&#64;&#115;&#117;&#99;&#107;&#46;нет&#101;&#114;");
      }
  
      @Test
      public void asciiIsConvertedToPlainText() {
          String input = "mailto:w oo@suck.er";
          String encoded = "&#109;&#97;&#105;&#108;&#116;&#111;&#58;&#119;&nbsp;&#111;&#111;&#64;&#115;&#117;&#99;&#107;&#46;&#101;&#114;";
  
          assertThat(SpamProtector.toPlain(encoded)).isEqualTo(input);
      }
  
      @Test
      public void mixOfEncodedAndNonAsciiPlainCanBeDecoded() {
          String plain = "mailto:wフィリップoo@suck.нетer";
          String encoded = "&#109;&#97;&#105;&#108;&#116;&#111;&#58;&#119;フィリップ&#111;&#111;&#64;&#115;&#117;&#99;&#107;&#46;нет&#101;&#114;";
          assertThat(SpamProtector.toPlain(encoded)).isEqualTo(plain);
      }
  
      @Test
      public void stupidInputDecode() {
          assertThat(SpamProtector.toPlain("")).isEmpty();
          assertThat(SpamProtector.toPlain(null)).isNull();
          assertThat(SpamProtector.toPlain("²")).isEqualTo("²");
      }
  
      @Test
      public void stupidInputEncode() {
          assertThat(SpamProtector.toEncoded("")).isEmpty();
          assertThat(SpamProtector.toEncoded(null)).isNull();
          assertThat(SpamProtector.toEncoded("²")).isEqualTo("²");
      }
  
      @Test
      public void issue24LowercasingIsDefaultBehaviour() {
          assertThat(SpamProtector.toPlain(CharacterConverter.CAPITAL_A.getPlain())).isEqualTo("A");
          assertThat(SpamProtector.toPlain(CharacterConverter.A.getPlain())).isEqualTo("a");
      }
  
  }