src/test/java/net/pterodactylus/sone/core/FreenetInterfaceTest.java

   1 package net.pterodactylus.sone.core;
   2
   3 import static freenet.client.FetchException.FetchExceptionMode.ALL_DATA_NOT_FOUND;
   4 import static freenet.keys.InsertableClientSSK.createRandom;
   5 import static freenet.node.RequestStarter.INTERACTIVE_PRIORITY_CLASS;
   6 import static freenet.node.RequestStarter.PREFETCH_PRIORITY_CLASS;
   7 import static net.pterodactylus.sone.test.Matchers.delivers;
   8 import static net.pterodactylus.sone.test.TestUtil.setFinalField;
   9 import static org.hamcrest.MatcherAssert.assertThat;
  10 import static org.hamcrest.Matchers.is;
  11 import static org.hamcrest.Matchers.notNullValue;
  12 import static org.hamcrest.Matchers.nullValue;
  13 import static org.mockito.ArgumentCaptor.forClass;
  14 import static org.mockito.ArgumentMatchers.any;
  15 import static org.mockito.ArgumentMatchers.anyBoolean;
  16 import static org.mockito.ArgumentMatchers.anyLong;
  17 import static org.mockito.ArgumentMatchers.anyShort;
  18 import static org.mockito.ArgumentMatchers.eq;
  19 import static org.mockito.Mockito.doNothing;
  20 import static org.mockito.Mockito.mock;
  21 import static org.mockito.Mockito.never;
  22 import static org.mockito.Mockito.times;
  23 import static org.mockito.Mockito.verify;
  24 import static org.mockito.Mockito.verifyNoMoreInteractions;
  25 import static org.mockito.Mockito.when;
  26 import static org.mockito.Mockito.withSettings;
  27
  28 import java.io.IOException;
  29 import java.net.MalformedURLException;
  30 import java.util.HashMap;
  31
  32 import net.pterodactylus.sone.core.FreenetInterface.BackgroundFetchCallback;
  33 import net.pterodactylus.sone.core.FreenetInterface.Callback;
  34 import net.pterodactylus.sone.core.FreenetInterface.InsertToken;
  35 import net.pterodactylus.sone.core.FreenetInterface.InsertTokenSupplier;
  36 import net.pterodactylus.sone.core.event.ImageInsertAbortedEvent;
  37 import net.pterodactylus.sone.core.event.ImageInsertFailedEvent;
  38 import net.pterodactylus.sone.core.event.ImageInsertFinishedEvent;
  39 import net.pterodactylus.sone.core.event.ImageInsertStartedEvent;
  40 import net.pterodactylus.sone.data.Image;
  41 import net.pterodactylus.sone.data.Sone;
  42 import net.pterodactylus.sone.data.TemporaryImage;
  43 import net.pterodactylus.sone.data.impl.ImageImpl;
  44 import net.pterodactylus.sone.test.TestUtil;
  45
  46 import freenet.client.ClientMetadata;
  47 import freenet.client.FetchContext;
  48 import freenet.client.FetchException;
  49 import freenet.client.FetchException.FetchExceptionMode;
  50 import freenet.client.FetchResult;
  51 import freenet.client.HighLevelSimpleClient;
  52 import freenet.client.InsertBlock;
  53 import freenet.client.InsertContext;
  54 import freenet.client.InsertException;
  55 import freenet.client.InsertException.InsertExceptionMode;
  56 import freenet.client.Metadata;
  57 import freenet.client.async.ClientContext;
  58 import freenet.client.async.ClientGetCallback;
  59 import freenet.client.async.ClientGetter;
  60 import freenet.client.async.ClientPutter;
  61 import freenet.client.async.SnoopMetadata;
  62 import freenet.client.async.USKCallback;
  63 import freenet.client.async.USKManager;
  64 import freenet.crypt.DummyRandomSource;
  65 import freenet.crypt.RandomSource;
  66 import freenet.keys.FreenetURI;
  67 import freenet.keys.InsertableClientSSK;
  68 import freenet.keys.USK;
  69 import freenet.node.Node;
  70 import freenet.node.NodeClientCore;
  71 import freenet.node.RequestClient;
  72 import freenet.support.Base64;
  73 import freenet.support.api.Bucket;
  74 import freenet.support.io.ArrayBucket;
  75 import freenet.support.io.ResumeFailedException;
  76
  77 import com.google.common.eventbus.EventBus;
  78 import org.junit.Before;
  79 import org.junit.Test;
  80 import org.mockito.ArgumentCaptor;
  81 import org.mockito.ArgumentMatchers;
  82
  83 /**
  84  * Unit test for {@link FreenetInterface}.
  85  *
  86  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  87  */
  88 public class FreenetInterfaceTest {
  89
  90         private final EventBus eventBus = mock(EventBus.class);
  91         private final Node node = mock(Node.class);
  92         private final NodeClientCore nodeClientCore = mock(NodeClientCore.class);
  93         private final HighLevelSimpleClient highLevelSimpleClient = mock(HighLevelSimpleClient.class, withSettings().extraInterfaces(RequestClient.class));
  94         private final RandomSource randomSource = new DummyRandomSource();
  95         private final USKManager uskManager = mock(USKManager.class);
  96         private FreenetInterface freenetInterface;
  97         private final Sone sone = mock(Sone.class);
  98         private final ArgumentCaptor<USKCallback> callbackCaptor = forClass(USKCallback.class);
  99         private final Image image = mock(Image.class);
 100         private InsertToken insertToken;
 101         private final Bucket bucket = mock(Bucket.class);
 102         private final ArgumentCaptor<ClientGetCallback> clientGetCallback = forClass(ClientGetCallback.class);
 103         private final FreenetURI uri = new FreenetURI("KSK@pgl.png");
 104         private final FetchResult fetchResult = mock(FetchResult.class);
 105         private final BackgroundFetchCallback backgroundFetchCallback = mock(BackgroundFetchCallback.class);
 106         private final ClientGetter clientGetter = mock(ClientGetter.class);
 107
 108         public FreenetInterfaceTest() throws MalformedURLException {
 109         }
 110
 111         @Before
 112         public void setupHighLevelSimpleClient() throws Exception {
 113                 when(highLevelSimpleClient.getFetchContext()).thenReturn(mock(FetchContext.class));
 114                 when(highLevelSimpleClient.fetch(eq(uri), anyLong(), any(ClientGetCallback.class), any(FetchContext.class), anyShort())).thenReturn( clientGetter);
 115         }
 116
 117         @Before
 118         public void setupFreenetInterface() {
 119                 when(nodeClientCore.makeClient(anyShort(), anyBoolean(), anyBoolean())).thenReturn(highLevelSimpleClient);
 120                 setFinalField(node, "clientCore", nodeClientCore);
 121                 setFinalField(node, "random", randomSource);
 122                 setFinalField(nodeClientCore, "uskManager", uskManager);
 123                 setFinalField(nodeClientCore, "clientContext", mock(ClientContext.class));
 124                 freenetInterface = new FreenetInterface(eventBus, node);
 125                 insertToken = freenetInterface.new InsertToken(image);
 126                 insertToken.setBucket(bucket);
 127         }
 128
 129         @Before
 130         public void setupSone() {
 131                 InsertableClientSSK insertSsk = createRandom(randomSource, "test-0");
 132                 when(sone.getId()).thenReturn(Base64.encode(insertSsk.getURI().getRoutingKey()));
 133                 when(sone.getRequestUri()).thenReturn(insertSsk.getURI().uskForSSK());
 134         }
 135
 136         @Before
 137         public void setupCallbackCaptorAndUskManager() {
 138                 doNothing().when(uskManager).subscribe(any(USK.class), callbackCaptor.capture(), anyBoolean(), any(RequestClient.class));
 139         }
 140
 141         @Test
 142         public void canFetchUri() throws MalformedURLException, FetchException {
 143                 FreenetURI freenetUri = new FreenetURI("KSK@GPLv3.txt");
 144                 FetchResult fetchResult = createFetchResult();
 145                 when(highLevelSimpleClient.fetch(freenetUri)).thenReturn(fetchResult);
 146                 Fetched fetched = freenetInterface.fetchUri(freenetUri);
 147                 assertThat(fetched, notNullValue());
 148                 assertThat(fetched.getFetchResult(), is(fetchResult));
 149                 assertThat(fetched.getFreenetUri(), is(freenetUri));
 150         }
 151
 152         @Test
 153         public void fetchFollowsRedirect() throws MalformedURLException, FetchException {
 154                 FreenetURI freenetUri = new FreenetURI("KSK@GPLv2.txt");
 155                 FreenetURI newFreenetUri = new FreenetURI("KSK@GPLv3.txt");
 156                 FetchResult fetchResult = createFetchResult();
 157                 FetchException fetchException = new FetchException(FetchExceptionMode.PERMANENT_REDIRECT, newFreenetUri);
 158                 when(highLevelSimpleClient.fetch(freenetUri)).thenThrow(fetchException);
 159                 when(highLevelSimpleClient.fetch(newFreenetUri)).thenReturn(fetchResult);
 160                 Fetched fetched = freenetInterface.fetchUri(freenetUri);
 161                 assertThat(fetched.getFetchResult(), is(fetchResult));
 162                 assertThat(fetched.getFreenetUri(), is(newFreenetUri));
 163         }
 164
 165         @Test
 166         public void fetchReturnsNullOnFetchExceptions() throws MalformedURLException, FetchException {
 167                 FreenetURI freenetUri = new FreenetURI("KSK@GPLv2.txt");
 168                 FetchException fetchException = new FetchException(ALL_DATA_NOT_FOUND);
 169                 when(highLevelSimpleClient.fetch(freenetUri)).thenThrow(fetchException);
 170                 Fetched fetched = freenetInterface.fetchUri(freenetUri);
 171                 assertThat(fetched, nullValue());
 172         }
 173
 174         private FetchResult createFetchResult() {
 175                 ClientMetadata clientMetadata = new ClientMetadata("text/plain");
 176                 Bucket bucket = new ArrayBucket("Some Data.".getBytes());
 177                 return new FetchResult(clientMetadata, bucket);
 178         }
 179
 180         @Test
 181         public void insertingAnImage() throws SoneException, InsertException, IOException {
 182                 TemporaryImage temporaryImage = new TemporaryImage("image-id");
 183                 temporaryImage.setMimeType("image/png");
 184                 byte[] imageData = new byte[] { 1, 2, 3, 4 };
 185                 temporaryImage.setImageData(imageData);
 186                 Image image = new ImageImpl("image-id");
 187                 InsertToken insertToken = freenetInterface.new InsertToken(image);
 188                 InsertContext insertContext = mock(InsertContext.class);
 189                 when(highLevelSimpleClient.getInsertContext(anyBoolean())).thenReturn(insertContext);
 190                 ClientPutter clientPutter = mock(ClientPutter.class);
 191                 ArgumentCaptor<InsertBlock> insertBlockCaptor = forClass(InsertBlock.class);
 192                 when(highLevelSimpleClient.insert(insertBlockCaptor.capture(), eq((String) null), eq(false), eq(insertContext), eq(insertToken), anyShort())).thenReturn(clientPutter);
 193                 freenetInterface.insertImage(temporaryImage, image, insertToken);
 194                 assertThat(insertBlockCaptor.getValue().getData().getInputStream(), delivers(new byte[] { 1, 2, 3, 4 }));
 195                 assertThat(TestUtil.<ClientPutter>getPrivateField(insertToken, "clientPutter"), is(clientPutter));
 196                 verify(eventBus).post(any(ImageInsertStartedEvent.class));
 197         }
 198
 199         @Test(expected = SoneInsertException.class)
 200         public void insertExceptionCausesASoneException() throws InsertException, SoneException, IOException {
 201                 TemporaryImage temporaryImage = new TemporaryImage("image-id");
 202                 temporaryImage.setMimeType("image/png");
 203                 byte[] imageData = new byte[] { 1, 2, 3, 4 };
 204                 temporaryImage.setImageData(imageData);
 205                 Image image = new ImageImpl("image-id");
 206                 InsertToken insertToken = freenetInterface.new InsertToken(image);
 207                 InsertContext insertContext = mock(InsertContext.class);
 208                 when(highLevelSimpleClient.getInsertContext(anyBoolean())).thenReturn(insertContext);
 209                 ArgumentCaptor<InsertBlock> insertBlockCaptor = forClass(InsertBlock.class);
 210                 when(highLevelSimpleClient.insert(insertBlockCaptor.capture(), eq((String) null), eq(false), eq(insertContext), eq(insertToken), anyShort())).thenThrow(InsertException.class);
 211                 freenetInterface.insertImage(temporaryImage, image, insertToken);
 212         }
 213
 214         @Test
 215         public void insertingADirectory() throws InsertException, SoneException {
 216                 FreenetURI freenetUri = mock(FreenetURI.class);
 217                 HashMap<String, Object> manifestEntries = new HashMap<String, Object>();
 218                 String defaultFile = "index.html";
 219                 FreenetURI resultingUri = mock(FreenetURI.class);
 220                 when(highLevelSimpleClient.insertManifest(eq(freenetUri), eq(manifestEntries), eq(defaultFile))).thenReturn(resultingUri);
 221                 assertThat(freenetInterface.insertDirectory(freenetUri, manifestEntries, defaultFile), is(resultingUri));
 222         }
 223
 224         @Test(expected = SoneException.class)
 225         public void insertExceptionIsForwardedAsSoneException() throws InsertException, SoneException {
 226                 when(highLevelSimpleClient.insertManifest(ArgumentMatchers.<FreenetURI>any(), ArgumentMatchers.<HashMap<String, Object>>any(), ArgumentMatchers.<String>any())).thenThrow(InsertException.class);
 227                 freenetInterface.insertDirectory(null, null, null);
 228         }
 229
 230         @Test
 231         public void soneWithWrongRequestUriWillNotBeSubscribed() throws MalformedURLException {
 232                 when(sone.getRequestUri()).thenReturn(new FreenetURI("KSK@GPLv3.txt"));
 233                 freenetInterface.registerUsk(new FreenetURI("KSK@GPLv3.txt"), null);
 234                 verify(uskManager, never()).subscribe(any(USK.class), any(USKCallback.class), anyBoolean(), any(RequestClient.class));
 235         }
 236
 237         @Test
 238         public void registeringAUsk() {
 239                 FreenetURI freenetUri = createRandom(randomSource, "test-0").getURI().uskForSSK();
 240                 Callback callback = mock(Callback.class);
 241                 freenetInterface.registerUsk(freenetUri, callback);
 242                 verify(uskManager).subscribe(any(USK.class), any(USKCallback.class), anyBoolean(), eq((RequestClient) highLevelSimpleClient));
 243         }
 244
 245         @Test
 246         public void registeringANonUskKeyWillNotBeSubscribed() throws MalformedURLException {
 247                 FreenetURI freenetUri = new FreenetURI("KSK@GPLv3.txt");
 248                 Callback callback = mock(Callback.class);
 249                 freenetInterface.registerUsk(freenetUri, callback);
 250                 verify(uskManager, never()).subscribe(any(USK.class), any(USKCallback.class), anyBoolean(), eq((RequestClient) highLevelSimpleClient));
 251         }
 252
 253         @Test
 254         public void registeringAnActiveUskWillSubscribeToItCorrectly() {
 255                 FreenetURI freenetUri = createRandom(randomSource, "test-0").getURI().uskForSSK();
 256                 final USKCallback uskCallback = mock(USKCallback.class);
 257                 freenetInterface.registerActiveUsk(freenetUri, uskCallback);
 258                 verify(uskManager).subscribe(any(USK.class), eq(uskCallback), eq(true), any(RequestClient.class));
 259         }
 260
 261         @Test
 262         public void registeringAnInactiveUskWillSubscribeToItCorrectly() {
 263                 FreenetURI freenetUri = createRandom(randomSource, "test-0").getURI().uskForSSK();
 264                 final USKCallback uskCallback = mock(USKCallback.class);
 265                 freenetInterface.registerPassiveUsk(freenetUri, uskCallback);
 266                 verify(uskManager).subscribe(any(USK.class), eq(uskCallback), eq(false), any(RequestClient.class));
 267         }
 268
 269         @Test
 270         public void registeringAnActiveNonUskWillNotSubscribeToAUsk()
 271         throws MalformedURLException {
 272                 FreenetURI freenetUri = createRandom(randomSource, "test-0").getURI();
 273                 freenetInterface.registerActiveUsk(freenetUri, null);
 274                 verify(uskManager, never()).subscribe(any(USK.class),
 275                                 any(USKCallback.class), anyBoolean(),
 276                                 eq((RequestClient) highLevelSimpleClient));
 277         }
 278
 279         @Test
 280         public void registeringAnInactiveNonUskWillNotSubscribeToAUsk()
 281         throws MalformedURLException {
 282                 FreenetURI freenetUri = createRandom(randomSource, "test-0").getURI();
 283                 freenetInterface.registerPassiveUsk(freenetUri, null);
 284                 verify(uskManager, never()).subscribe(any(USK.class),
 285                                 any(USKCallback.class), anyBoolean(),
 286                                 eq((RequestClient) highLevelSimpleClient));
 287         }
 288
 289         @Test
 290         public void unregisteringANotRegisteredUskDoesNothing() {
 291                 FreenetURI freenetURI = createRandom(randomSource, "test-0").getURI().uskForSSK();
 292                 freenetInterface.unregisterUsk(freenetURI);
 293                 verify(uskManager, never()).unsubscribe(any(USK.class), any(USKCallback.class));
 294         }
 295
 296         @Test
 297         public void unregisteringARegisteredUsk() {
 298                 FreenetURI freenetURI = createRandom(randomSource, "test-0").getURI().uskForSSK();
 299                 Callback callback = mock(Callback.class);
 300                 freenetInterface.registerUsk(freenetURI, callback);
 301                 freenetInterface.unregisterUsk(freenetURI);
 302                 verify(uskManager).unsubscribe(any(USK.class), any(USKCallback.class));
 303         }
 304
 305         @Test
 306         public void unregisteringANotRegisteredSoneDoesNothing() {
 307                 freenetInterface.unregisterUsk(sone);
 308                 verify(uskManager, never()).unsubscribe(any(USK.class), any(USKCallback.class));
 309         }
 310
 311         @Test
 312         public void unregisteringARegisteredSoneUnregistersTheSone()
 313         throws MalformedURLException {
 314                 freenetInterface.registerActiveUsk(sone.getRequestUri(), mock(USKCallback.class));
 315                 freenetInterface.unregisterUsk(sone);
 316                 verify(uskManager).unsubscribe(any(USK.class), any(USKCallback.class));
 317         }
 318
 319         @Test
 320         public void unregisteringASoneWithAWrongRequestKeyWillNotUnsubscribe() throws MalformedURLException {
 321                 when(sone.getRequestUri()).thenReturn(new FreenetURI("KSK@GPLv3.txt"));
 322                 freenetInterface.registerUsk(sone.getRequestUri(), null);
 323                 freenetInterface.unregisterUsk(sone);
 324                 verify(uskManager, never()).unsubscribe(any(USK.class), any(USKCallback.class));
 325         }
 326
 327         @Test
 328         public void callbackForNormalUskUsesDifferentPriorities() {
 329                 Callback callback = mock(Callback.class);
 330                 FreenetURI soneUri = createRandom(randomSource, "test-0").getURI().uskForSSK();
 331                 freenetInterface.registerUsk(soneUri, callback);
 332                 assertThat(callbackCaptor.getValue().getPollingPriorityNormal(), is(PREFETCH_PRIORITY_CLASS));
 333                 assertThat(callbackCaptor.getValue().getPollingPriorityProgress(), is(INTERACTIVE_PRIORITY_CLASS));
 334         }
 335
 336         @Test
 337         public void callbackForNormalUskForwardsImportantParameters() throws MalformedURLException {
 338                 Callback callback = mock(Callback.class);
 339                 FreenetURI uri = createRandom(randomSource, "test-0").getURI().uskForSSK();
 340                 freenetInterface.registerUsk(uri, callback);
 341                 USK key = mock(USK.class);
 342                 when(key.getURI()).thenReturn(uri);
 343                 callbackCaptor.getValue().onFoundEdition(3, key, null, false, (short) 0, null, true, true);
 344                 verify(callback).editionFound(eq(uri), eq(3L), eq(true), eq(true));
 345         }
 346
 347         @Test
 348         public void fetchedRetainsUriAndFetchResult() {
 349                 FreenetURI freenetUri = mock(FreenetURI.class);
 350                 FetchResult fetchResult = mock(FetchResult.class);
 351                 Fetched fetched = new Fetched(freenetUri, fetchResult);
 352                 assertThat(fetched.getFreenetUri(), is(freenetUri));
 353                 assertThat(fetched.getFetchResult(), is(fetchResult));
 354         }
 355
 356         @Test
 357         public void cancellingAnInsertWillFireImageInsertAbortedEvent() {
 358                 ClientPutter clientPutter = mock(ClientPutter.class);
 359                 insertToken.setClientPutter(clientPutter);
 360                 ArgumentCaptor<ImageInsertStartedEvent> imageInsertStartedEvent = forClass(ImageInsertStartedEvent.class);
 361                 verify(eventBus).post(imageInsertStartedEvent.capture());
 362                 assertThat(imageInsertStartedEvent.getValue().image(), is(image));
 363                 insertToken.cancel();
 364                 ArgumentCaptor<ImageInsertAbortedEvent> imageInsertAbortedEvent = forClass(ImageInsertAbortedEvent.class);
 365                 verify(eventBus, times(2)).post(imageInsertAbortedEvent.capture());
 366                 verify(bucket).free();
 367                 assertThat(imageInsertAbortedEvent.getValue().image(), is(image));
 368         }
 369
 370         @Test
 371         public void failureWithoutExceptionSendsFailedEvent() {
 372                 insertToken.onFailure(null, null);
 373                 ArgumentCaptor<ImageInsertFailedEvent> imageInsertFailedEvent = forClass(ImageInsertFailedEvent.class);
 374                 verify(eventBus).post(imageInsertFailedEvent.capture());
 375                 verify(bucket).free();
 376                 assertThat(imageInsertFailedEvent.getValue().image(), is(image));
 377                 assertThat(imageInsertFailedEvent.getValue().cause(), nullValue());
 378         }
 379
 380         @Test
 381         public void failureSendsFailedEventWithException() {
 382                 InsertException insertException = new InsertException(InsertExceptionMode.INTERNAL_ERROR, "Internal error", null);
 383                 insertToken.onFailure(insertException, null);
 384                 ArgumentCaptor<ImageInsertFailedEvent> imageInsertFailedEvent = forClass(ImageInsertFailedEvent.class);
 385                 verify(eventBus).post(imageInsertFailedEvent.capture());
 386                 verify(bucket).free();
 387                 assertThat(imageInsertFailedEvent.getValue().image(), is(image));
 388                 assertThat(imageInsertFailedEvent.getValue().cause(), is((Throwable) insertException));
 389         }
 390
 391         @Test
 392         public void failureBecauseCancelledByUserSendsAbortedEvent() {
 393                 InsertException insertException = new InsertException(InsertExceptionMode.CANCELLED, null);
 394                 insertToken.onFailure(insertException, null);
 395                 ArgumentCaptor<ImageInsertAbortedEvent> imageInsertAbortedEvent = forClass(ImageInsertAbortedEvent.class);
 396                 verify(eventBus).post(imageInsertAbortedEvent.capture());
 397                 verify(bucket).free();
 398                 assertThat(imageInsertAbortedEvent.getValue().image(), is(image));
 399         }
 400
 401         @Test
 402         public void ignoredMethodsDoNotThrowExceptions() throws ResumeFailedException {
 403                 insertToken.onResume(null);
 404                 insertToken.onFetchable(null);
 405                 insertToken.onGeneratedMetadata(null, null);
 406         }
 407
 408         @Test
 409         public void generatedUriIsPostedOnSuccess() {
 410                 FreenetURI generatedUri = mock(FreenetURI.class);
 411                 insertToken.onGeneratedURI(generatedUri, null);
 412                 insertToken.onSuccess(null);
 413                 ArgumentCaptor<ImageInsertFinishedEvent> imageInsertFinishedEvent = forClass(ImageInsertFinishedEvent.class);
 414                 verify(eventBus).post(imageInsertFinishedEvent.capture());
 415                 verify(bucket).free();
 416                 assertThat(imageInsertFinishedEvent.getValue().image(), is(image));
 417                 assertThat(imageInsertFinishedEvent.getValue().resultingUri(), is(generatedUri));
 418         }
 419
 420         @Test
 421         public void insertTokenSupplierSuppliesInsertTokens() {
 422                 InsertTokenSupplier insertTokenSupplier = new InsertTokenSupplier(freenetInterface);
 423                 assertThat(insertTokenSupplier.apply(image), notNullValue());
 424         }
 425
 426         @Test
 427         public void backgroundFetchCanBeStarted() throws Exception {
 428                 freenetInterface.startFetch(uri, backgroundFetchCallback);
 429                 verify(highLevelSimpleClient).fetch(eq(uri), anyLong(), any(ClientGetCallback.class), any(FetchContext.class), anyShort());
 430         }
 431
 432         @Test
 433         public void backgroundFetchRegistersSnoopAndRestartsTheRequest() throws Exception {
 434                 freenetInterface.startFetch(uri, backgroundFetchCallback);
 435                 verify(clientGetter).setMetaSnoop(any(SnoopMetadata.class));
 436                 verify(clientGetter).restart(eq(uri), anyBoolean(), any(ClientContext.class));
 437         }
 438
 439         @Test
 440         public void requestIsNotCancelledForImageMimeType() {
 441                 verifySnoopCancelsRequestForMimeType("image/png", false);
 442                 verify(backgroundFetchCallback, never()).failed(uri);
 443         }
 444
 445         @Test
 446         public void requestIsCancelledForNullMimeType() {
 447                 verifySnoopCancelsRequestForMimeType(null, true);
 448                 verify(backgroundFetchCallback, never()).shouldCancel(eq(uri), ArgumentMatchers.<String>any(), anyLong());
 449                 verify(backgroundFetchCallback).failed(uri);
 450         }
 451
 452         @Test
 453         public void requestIsCancelledForVideoMimeType() {
 454                 verifySnoopCancelsRequestForMimeType("video/mkv", true);
 455                 verify(backgroundFetchCallback).failed(uri);
 456         }
 457
 458         @Test
 459         public void requestIsCancelledForAudioMimeType() {
 460                 verifySnoopCancelsRequestForMimeType("audio/mpeg", true);
 461                 verify(backgroundFetchCallback).failed(uri);
 462         }
 463
 464         @Test
 465         public void requestIsCancelledForTextMimeType() {
 466                 verifySnoopCancelsRequestForMimeType("text/plain", true);
 467                 verify(backgroundFetchCallback).failed(uri);
 468         }
 469
 470         private void verifySnoopCancelsRequestForMimeType(String mimeType, boolean cancel) {
 471                 when(backgroundFetchCallback.shouldCancel(eq(uri), eq(mimeType), anyLong())).thenReturn(cancel);
 472                 freenetInterface.startFetch(uri, backgroundFetchCallback);
 473                 ArgumentCaptor<SnoopMetadata> snoopMetadata = forClass(SnoopMetadata.class);
 474                 verify(clientGetter).setMetaSnoop(snoopMetadata.capture());
 475                 Metadata metadata = mock(Metadata.class);
 476                 when(metadata.getMIMEType()).thenReturn(mimeType);
 477                 assertThat(snoopMetadata.getValue().snoopMetadata(metadata, mock(ClientContext.class)), is(cancel));
 478         }
 479
 480         @Test
 481         public void callbackOfBackgroundFetchIsNotifiedOnSuccess() throws Exception {
 482                 freenetInterface.startFetch(uri, backgroundFetchCallback);
 483                 verify(highLevelSimpleClient).fetch(eq(uri), anyLong(), clientGetCallback.capture(), any(FetchContext.class), anyShort());
 484                 when(fetchResult.getMimeType()).thenReturn("image/png");
 485                 when(fetchResult.asByteArray()).thenReturn(new byte[] { 1, 2, 3, 4, 5 });
 486                 clientGetCallback.getValue().onSuccess(fetchResult, mock(ClientGetter.class));
 487                 verify(backgroundFetchCallback).loaded(uri, "image/png", new byte[] { 1, 2, 3, 4, 5 });
 488                 verifyNoMoreInteractions(backgroundFetchCallback);
 489         }
 490
 491         @Test
 492         public void callbackOfBackgroundFetchIsNotifiedOnFailure() throws Exception {
 493                 freenetInterface.startFetch(uri, backgroundFetchCallback);
 494                 verify(highLevelSimpleClient).fetch(eq(uri), anyLong(), clientGetCallback.capture(), any(FetchContext.class), anyShort());
 495                 when(fetchResult.getMimeType()).thenReturn("image/png");
 496                 when(fetchResult.asByteArray()).thenReturn(new byte[] { 1, 2, 3, 4, 5 });
 497                 clientGetCallback.getValue().onFailure(new FetchException(ALL_DATA_NOT_FOUND), mock(ClientGetter.class));
 498                 verify(backgroundFetchCallback).failed(uri);
 499                 verifyNoMoreInteractions(backgroundFetchCallback);
 500         }
 501
 502         @Test
 503         public void callbackOfBackgroundFetchIsNotifiedAsFailureIfBucketCanNotBeLoaded() throws Exception {
 504                 freenetInterface.startFetch(uri, backgroundFetchCallback);
 505                 verify(highLevelSimpleClient).fetch(eq(uri), anyLong(), clientGetCallback.capture(), any(FetchContext.class), anyShort());
 506                 when(fetchResult.getMimeType()).thenReturn("image/png");
 507                 when(fetchResult.asByteArray()).thenThrow(IOException.class);
 508                 clientGetCallback.getValue().onSuccess(fetchResult, mock(ClientGetter.class));
 509                 verify(backgroundFetchCallback).failed(uri);
 510                 verifyNoMoreInteractions(backgroundFetchCallback);
 511         }
 512
 513 }