src/test/java/net/pterodactylus/sone/text/SoneTextParserTest.java

   1 /*
   2  * Sone - SoneTextParserTest.java - Copyright © 2011–2013 David Roden
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.pterodactylus.sone.text;
  19
  20 import static org.hamcrest.MatcherAssert.assertThat;
  21 import static org.hamcrest.Matchers.is;
  22 import static org.hamcrest.Matchers.notNullValue;
  23 import static org.mockito.Mockito.mock;
  24 import static org.mockito.Mockito.when;
  25
  26 import java.io.IOException;
  27 import java.io.StringReader;
  28 import java.util.Arrays;
  29 import java.util.Collection;
  30 import java.util.Collections;
  31 import java.util.HashMap;
  32 import java.util.HashSet;
  33 import java.util.Map;
  34 import java.util.Set;
  35
  36 import net.pterodactylus.sone.data.Post;
  37 import net.pterodactylus.sone.data.Sone;
  38 import net.pterodactylus.sone.data.impl.IdOnlySone;
  39 import net.pterodactylus.sone.database.PostProvider;
  40 import net.pterodactylus.sone.database.SoneProvider;
  41
  42 import com.google.common.base.Function;
  43 import com.google.common.base.Optional;
  44 import org.junit.Test;
  45 import org.mockito.Mockito;
  46 import org.mockito.stubbing.OngoingStubbing;
  47
  48 /**
  49  * JUnit test case for {@link SoneTextParser}.
  50  *
  51  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  52  */
  53 public class SoneTextParserTest {
  54
  55         private final SoneProvider soneProvider = new TestSoneProvider();
  56         private final TestPostProvider postProvider = new TestPostProvider();
  57         private final SoneTextParser soneTextParser = new SoneTextParser(soneProvider, postProvider);
  58
  59         /**
  60          * Tests basic plain-text operation of the parser.
  61          *
  62          * @throws IOException
  63          *             if an I/O error occurs
  64          */
  65         @Test
  66         public void testPlainText() throws IOException {
  67                 Iterable<Part> parts;
  68
  69                 /* check basic operation. */
  70                 parts = soneTextParser.parse(null, new StringReader("Test."));
  71                 assertThat(parts, notNullValue());
  72                 assertThat(convertText(parts, PlainTextPart.class), is("Test."));
  73
  74                 /* check empty lines at start and end. */
  75                 parts = soneTextParser.parse(null, new StringReader("\nTest.\n\n"));
  76                 assertThat(parts, notNullValue());
  77                 assertThat(convertText(parts, PlainTextPart.class), is("Test."));
  78
  79                 /* check duplicate empty lines in the text. */
  80                 parts = soneTextParser.parse(null, new StringReader("\nTest.\n\n\nTest."));
  81                 assertThat(parts, notNullValue());
  82                 assertThat(convertText(parts, PlainTextPart.class), is("Test.\n\nTest."));
  83         }
  84
  85         /**
  86          * Tests parsing of KSK links.
  87          *
  88          * @throws IOException
  89          *             if an I/O error occurs
  90          */
  91         @Test
  92         public void testKSKLinks() throws IOException {
  93                 Iterable<Part> parts;
  94
  95                 /* check basic links. */
  96                 parts = soneTextParser.parse(null, new StringReader("KSK@gpl.txt"));
  97                 assertThat(parts, notNullValue());
  98                 assertThat(convertText(parts, FreenetLinkPart.class), is("[KSK@gpl.txt|gpl.txt|gpl.txt]"));
  99
 100                 /* check embedded links. */
 101                 parts = soneTextParser.parse(null, new StringReader("Link is KSK@gpl.txt\u200b."));
 102                 assertThat(parts, notNullValue());
 103                 assertThat(convertText(parts, PlainTextPart.class, FreenetLinkPart.class), is("Link is [KSK@gpl.txt|gpl.txt|gpl.txt]\u200b."));
 104
 105                 /* check embedded links and line breaks. */
 106                 parts = soneTextParser.parse(null, new StringReader("Link is KSK@gpl.txt\nKSK@test.dat\n"));
 107                 assertThat(parts, notNullValue());
 108                 assertThat(convertText(parts, PlainTextPart.class, FreenetLinkPart.class),
 109                         is("Link is [KSK@gpl.txt|gpl.txt|gpl.txt]\n[KSK@test.dat|test.dat|test.dat]"));
 110         }
 111
 112         /**
 113          * Test case for a bug that was discovered in 0.6.7.
 114          *
 115          * @throws IOException
 116          *             if an I/O error occurs
 117          */
 118         @Test
 119         public void testEmptyLinesAndSoneLinks() throws IOException {
 120                 Iterable<Part> parts;
 121
 122                 /* check basic links. */
 123                 parts = soneTextParser.parse(null, new StringReader("Some text.\n\nLink to sone://DAxKQzS48mtaQc7sUVHIgx3fnWZPQBz0EueBreUVWrU and stuff."));
 124                 assertThat(parts, notNullValue());
 125                 assertThat(convertText(parts, PlainTextPart.class, SonePart.class),
 126                         is("Some text.\n\nLink to [Sone|DAxKQzS48mtaQc7sUVHIgx3fnWZPQBz0EueBreUVWrU] and stuff."));
 127         }
 128
 129         /**
 130          * Test for a bug discovered in Sone 0.8.4 where a plain “http://” would be
 131          * parsed into a link.
 132          *
 133          * @throws IOException
 134          *             if an I/O error occurs
 135          */
 136         @Test
 137         public void testEmpyHttpLinks() throws IOException {
 138                 Iterable<Part> parts;
 139
 140                 /* check empty http links. */
 141                 parts = soneTextParser.parse(null, new StringReader("Some text. Empty link: http:// – nice!"));
 142                 assertThat(parts, notNullValue());
 143                 assertThat(convertText(parts, PlainTextPart.class), is("Some text. Empty link: http:// – nice!"));
 144         }
 145
 146         @Test
 147         public void linksToPostAreParsedCorrectly() throws IOException {
 148                 postProvider.addValidPostId("foo", "Post about foo...");
 149                 Iterable<Part> parts = soneTextParser.parse(null, new StringReader("This post://foo is awesome."));
 150                 assertThat(convertText(parts, PlainTextPart.class, PostPart.class), is("This [post|foo|Post about foo...] is awesome."));
 151         }
 152
 153         //
 154         // PRIVATE METHODS
 155         //
 156
 157         /**
 158          * Converts all given {@link Part}s into a string, validating that the
 159          * part’s classes match only the expected classes.
 160          *
 161          * @param parts
 162          *            The parts to convert to text
 163          * @param validClasses
 164          *            The valid classes; if no classes are given, all classes are
 165          *            valid
 166          * @return The converted text
 167          */
 168         private static String convertText(Iterable<Part> parts, Class<?>... validClasses) {
 169                 StringBuilder text = new StringBuilder();
 170                 for (Part part : parts) {
 171                         assertThat(part, notNullValue());
 172                         boolean classValid = validClasses.length == 0;
 173                         for (Class<?> validClass : validClasses) {
 174                                 if (validClass.isAssignableFrom(part.getClass())) {
 175                                         classValid = true;
 176                                         break;
 177                                 }
 178                         }
 179                         assertThat("Part’s Class (" + part.getClass() + ") is not one of " + Arrays.toString(validClasses), classValid, is(true));
 180                         if (part instanceof PlainTextPart) {
 181                                 text.append(part.getText());
 182                         } else if (part instanceof FreenetLinkPart) {
 183                                 FreenetLinkPart freenetLinkPart = (FreenetLinkPart) part;
 184                                 text.append('[')
 185                                         .append(freenetLinkPart.getLink())
 186                                         .append('|')
 187                                         .append(freenetLinkPart.isTrusted() ? "trusted|" : "")
 188                                         .append(freenetLinkPart.getTitle())
 189                                         .append('|')
 190                                         .append(freenetLinkPart.getText())
 191                                         .append(']');
 192                         } else if (part instanceof LinkPart) {
 193                                 LinkPart linkPart = (LinkPart) part;
 194                                 text.append('[')
 195                                         .append(linkPart.getLink())
 196                                         .append('|')
 197                                         .append(linkPart.getTitle())
 198                                         .append('|')
 199                                         .append(linkPart.getText())
 200                                         .append(']');
 201                         } else if (part instanceof SonePart) {
 202                                 SonePart sonePart = (SonePart) part;
 203                                 text.append("[Sone|").append(sonePart.getSone().getId()).append(']');
 204                         } else if (part instanceof PostPart) {
 205                                 PostPart postPart = (PostPart) part;
 206                                 text.append("[post|").append(postPart.getPost().getId()).append('|').append(postPart.getPost().getText()).append(']');
 207                         }
 208                 }
 209                 return text.toString();
 210         }
 211
 212         /**
 213          * Mock Sone provider.
 214          *
 215          * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
 216          */
 217         private static class TestSoneProvider implements SoneProvider {
 218
 219                 @Override
 220                 public Function<String, Optional<Sone>> soneLoader() {
 221                         return new Function<String, Optional<Sone>>() {
 222                                 @Override
 223                                 public Optional<Sone> apply(String soneId) {
 224                                         return getSone(soneId);
 225                                 }
 226                         };
 227                 }
 228
 229                 /**
 230                  * {@inheritDoc}
 231                  */
 232                 @Override
 233                 public Optional<Sone> getSone(final String soneId) {
 234                         return Optional.<Sone>of(new IdOnlySone(soneId));
 235                 }
 236
 237                 /**
 238                  * {@inheritDocs}
 239                  */
 240                 @Override
 241                 public Collection<Sone> getSones() {
 242                         return null;
 243                 }
 244
 245                 /**
 246                  * {@inheritDocs}
 247                  */
 248                 @Override
 249                 public Collection<Sone> getLocalSones() {
 250                         return null;
 251                 }
 252
 253                 /**
 254                  * {@inheritDocs}
 255                  */
 256                 @Override
 257                 public Collection<Sone> getRemoteSones() {
 258                         return null;
 259                 }
 260
 261         }
 262
 263         private static class TestPostProvider implements PostProvider {
 264
 265                 private final Map<String, String> posts = new HashMap<String, String>();
 266
 267                 private void addValidPostId(String validPostId, String text) {
 268                         posts.put(validPostId, text);
 269                 }
 270
 271                 @Override
 272                 public Collection<Post> getDirectedPosts(String recipientId) {
 273                         return Collections.emptyList();
 274                 }
 275
 276                 @Override
 277                 public Collection<Post> getPosts(String soneId) {
 278                         return Collections.emptyList();
 279                 }
 280
 281                 @Override
 282                 public Optional<Post> getPost(String postId) {
 283                         if (posts.containsKey(postId)) {
 284                                 Post post = mock(Post.class);
 285                                 when(post.getId()).thenReturn(postId);
 286                                 when(post.getText()).thenReturn(posts.get(postId));
 287                                 return Optional.of(post);
 288                         }
 289                         return Optional.absent();
 290                 }
 291
 292         }
 293
 294 }