Image loader tests

markwon-core/src/test/java/io/noties/markwon/MarkwonBuilderImplTest.java

@@ -88,7 +88,6 @@ public class MarkwonBuilderImplTest {
         verify(plugin, times(1)).configureConfiguration(any(MarkwonConfiguration.Builder.class));
         verify(plugin, times(1)).configureVisitor(any(MarkwonVisitor.Builder.class));
         verify(plugin, times(1)).configureSpansFactory(any(MarkwonSpansFactory.Builder.class));
-        verify(plugin, times(1)).configureHtmlRenderer(any(MarkwonHtmlRenderer.Builder.class));
 
         // note, no render props -> they must be configured on render stage
         verify(plugin, times(0)).processMarkdown(anyString());

markwon-core/src/test/java/io/noties/markwon/core/CorePluginTest.java

@@ -3,6 +3,7 @@ package io.noties.markwon.core;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.text.method.MovementMethod;
+import android.widget.ImageView;
 import android.widget.TextView;
 
 import org.commonmark.node.BlockQuote;
@@ -12,6 +13,7 @@ import org.commonmark.node.Emphasis;
 import org.commonmark.node.FencedCodeBlock;
 import org.commonmark.node.HardLineBreak;
 import org.commonmark.node.Heading;
+import org.commonmark.node.Image;
 import org.commonmark.node.IndentedCodeBlock;
 import org.commonmark.node.Link;
 import org.commonmark.node.ListItem;
@@ -84,7 +86,8 @@ public class CorePluginTest {
                 SoftLineBreak.class,
                 StrongEmphasis.class,
                 Text.class,
-                ThematicBreak.class
+                ThematicBreak.class,
+                Image.class
         };
 
         final CorePlugin plugin = CorePlugin.create();
@@ -202,6 +205,7 @@ public class CorePluginTest {
             add("beforeSetText");
             add("afterSetText");
             add("priority");
+            add("addOnTextAddedListener");
         }};
 
         // we will use declaredMethods because it won't return inherited ones

markwon-core/src/test/java/io/noties/markwon/syntax/SyntaxHighlightTest.java

@@ -26,7 +26,6 @@ import io.noties.markwon.SpanFactory;
 import io.noties.markwon.SpannableBuilder;
 import io.noties.markwon.core.CorePluginBridge;
 import io.noties.markwon.core.MarkwonTheme;
-import io.noties.markwon.html.MarkwonHtmlRenderer;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
@@ -83,7 +82,7 @@ public class SyntaxHighlightTest {
 
         final MarkwonConfiguration configuration = MarkwonConfiguration.builder()
                 .syntaxHighlight(highlight)
-                .build(mock(MarkwonTheme.class), mock(MarkwonHtmlRenderer.class), spansFactory);
+                .build(mock(MarkwonTheme.class), spansFactory);
 
         final Map<Class<? extends Node>, MarkwonVisitor.NodeVisitor<? extends Node>> visitorMap = Collections.emptyMap();
 

markwon-ext-latex/README.md

@@ -1,3 +1,11 @@
 # LaTeX
 
-[Documentation](https://noties.github.io/Markwon/docs/ext-latex)
+![stable](https://img.shields.io/maven-central/v/io.noties.markwon/ext-latex.svg)
+![snapshot](https://img.shields.io/nexus/s/https/oss.sonatype.org/io.noties.markwon/ext-latex.svg)
+
+```kotlin
+implementation "io.noties.markwon:ext-strikethrough:${markwonVersion}"
+```
+
+
+[Documentation](https://noties.github.io/Markwon/docs/v3/ext-latex)

markwon-ext-strikethrough/README.md

@@ -1,6 +1,12 @@
 # Strikethrough
 
-[![ext-strikethrough](https://img.shields.io/maven-central/v/io.noties.markwon/ext-strikethrough.svg?label=ext-strikethrough)](http://search.maven.org/#search|ga|1|g%3A%22io.noties.markwon%22%20AND%20a%3A%22ext-strikethrough%22)
+![stable](https://img.shields.io/maven-central/v/io.noties.markwon/ext-strikethrough.svg)
+![snapshot](https://img.shields.io/nexus/s/https/oss.sonatype.org/io.noties.markwon/ext-strikethrough.svg)
+
+```kotlin
+implementation "io.noties.markwon:ext-strikethrough:${markwonVersion}"
+```
+
 
 This module adds `strikethrough` functionality to `Markwon` via `StrikethroughPlugin`:
 

markwon-image/build.gradle

@@ -17,10 +17,11 @@ dependencies {
 
     api project(':markwon-core')
 
+    // todo: note that it includes these implicitly
     deps.with {
-        compileOnly it['android-gif']
-        compileOnly it['android-svg']
-        compileOnly it['okhttp']
+        api it['android-gif']
+        api it['android-svg']
+        api it['okhttp']
     }
 
     deps['test'].with {

markwon-image/src/main/java/io/noties/markwon/image/AsyncDrawableLoaderBuilder.java

@@ -9,7 +9,9 @@ import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 
 import io.noties.markwon.image.data.DataUriSchemeHandler;
+import io.noties.markwon.image.gif.GifMediaDecoder;
 import io.noties.markwon.image.network.NetworkSchemeHandler;
+import io.noties.markwon.image.svg.SvgMediaDecoder;
 
 class AsyncDrawableLoaderBuilder {
 
@@ -30,6 +32,15 @@ class AsyncDrawableLoaderBuilder {
         addSchemeHandler(DataUriSchemeHandler.create());
         addSchemeHandler(NetworkSchemeHandler.create());
 
+        // add SVG and GIF, but only if they are present in the class-path
+        if (SvgMediaDecoder.available()) {
+            addMediaDecoder(SvgMediaDecoder.create());
+        }
+
+        if (GifMediaDecoder.available()) {
+            addMediaDecoder(GifMediaDecoder.create());
+        }
+
         defaultMediaDecoder = DefaultImageMediaDecoder.create();
     }
 

markwon-image/src/main/java/io/noties/markwon/image/AsyncDrawableLoaderImpl.java

@@ -92,8 +92,15 @@ class AsyncDrawableLoaderImpl extends AsyncDrawableLoader {
                 Drawable drawable = null;
 
                 try {
+
+                    final String scheme = uri.getScheme();
+                    if (scheme == null
+                            || scheme.length() == 0) {
+                        throw new IllegalStateException("No scheme is found: " + destination);
+                    }
+
                     // obtain scheme handler
-                    final SchemeHandler schemeHandler = schemeHandlers.get(uri.getScheme());
+                    final SchemeHandler schemeHandler = schemeHandlers.get(scheme);
                     if (schemeHandler != null) {
 
                         // handle scheme

markwon-image/src/main/java/io/noties/markwon/image/gif/GifMediaDecoder.java

@@ -10,9 +10,9 @@ import java.io.InputStream;
 import java.util.Collection;
 import java.util.Collections;
 
+import io.noties.markwon.image.DrawableUtils;
 import io.noties.markwon.image.MediaDecoder;
 import pl.droidsonroids.gif.GifDrawable;
-import io.noties.markwon.image.DrawableUtils;
 
 /**
  * @since 1.1.0
@@ -22,11 +22,29 @@ public class GifMediaDecoder extends MediaDecoder {
 
     public static final String CONTENT_TYPE = "image/gif";
 
+    /**
+     * Creates a {@link GifMediaDecoder} with {@code autoPlayGif = true}
+     *
+     * @since 4.0.0-SNAPSHOT
+     */
+    @NonNull
+    public static GifMediaDecoder create() {
+        return create(true);
+    }
+
     @NonNull
     public static GifMediaDecoder create(boolean autoPlayGif) {
         return new GifMediaDecoder(autoPlayGif);
     }
 
+    /**
+     * @return boolean indicating if GIF dependency is satisfied
+     * @since 4.0.0-SNAPSHOT
+     */
+    public static boolean available() {
+        return Holder.HAS_GIF;
+    }
+
     private final boolean autoPlayGif;
 
     protected GifMediaDecoder(boolean autoPlayGif) {
@@ -105,7 +123,8 @@ public class GifMediaDecoder extends MediaDecoder {
         static void validate() {
             if (!HAS_GIF) {
                 throw new IllegalStateException("`pl.droidsonroids.gif:android-gif-drawable:*` " +
-                        "dependency is missing, please add to your project explicitly");
+                        "dependency is missing, please add to your project explicitly if you " +
+                        "wish to use GIF media decoder");
             }
         }
     }

markwon-image/src/main/java/io/noties/markwon/image/svg/SvgMediaDecoder.java

@@ -15,8 +15,8 @@ import java.io.InputStream;
 import java.util.Collection;
 import java.util.Collections;
 
-import io.noties.markwon.image.MediaDecoder;
 import io.noties.markwon.image.DrawableUtils;
+import io.noties.markwon.image.MediaDecoder;
 
 /**
  * @since 1.1.0
@@ -31,7 +31,7 @@ public class SvgMediaDecoder extends MediaDecoder {
      */
     @NonNull
     public static SvgMediaDecoder create() {
-        return new SvgMediaDecoder(Resources.getSystem());
+        return create(Resources.getSystem());
     }
 
     @NonNull
@@ -39,6 +39,14 @@ public class SvgMediaDecoder extends MediaDecoder {
         return new SvgMediaDecoder(resources);
     }
 
+    /**
+     * @return boolean indicating if SVG dependency is satisfied
+     * @since 4.0.0-SNAPSHOT
+     */
+    public static boolean available() {
+        return Holder.HAS_SVG;
+    }
+
     private final Resources resources;
 
     @SuppressWarnings("WeakerAccess")
@@ -102,7 +110,7 @@ public class SvgMediaDecoder extends MediaDecoder {
         static void validate() {
             if (!HAS_SVG) {
                 throw new IllegalStateException("`com.caverock:androidsvg:*` dependency is missing, " +
-                        "please add to your project explicitly");
+                        "please add to your project explicitly if you wish to use SVG media decoder");
             }
         }
     }

markwon-image/src/test/java/io/noties/markwon/image/AsyncDrawableLoaderBuilderTest.java

@@ -10,8 +10,8 @@ import java.util.Arrays;
 import java.util.Collections;
 import java.util.concurrent.ExecutorService;
 
-import io.noties.markwon.image.network.NetworkSchemeHandler;
 import io.noties.markwon.image.data.DataUriSchemeHandler;
+import io.noties.markwon.image.network.NetworkSchemeHandler;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
@@ -62,7 +62,7 @@ public class AsyncDrawableLoaderBuilderTest {
     public void defaults_initialized() {
         // default-media-decoder and executor-service must be initialized
 
-        assertNull(builder.defaultMediaDecoder);
+        assertNotNull(builder.defaultMediaDecoder);
         assertNull(builder.executorService);
 
         builder.build();
@@ -71,6 +71,18 @@ public class AsyncDrawableLoaderBuilderTest {
         assertNotNull(builder.executorService);
     }
 
+    @Test
+    public void default_media_decoder_removed() {
+        // we init default-media-decoder right away, but further it can be removed (nulled-out)
+
+        assertNotNull(builder.defaultMediaDecoder);
+
+        builder.defaultMediaDecoder(null);
+        builder.build();
+
+        assertNull(builder.defaultMediaDecoder);
+    }
+
     @Test
     public void executor() {
         // supplied executor-service must be used
@@ -155,7 +167,7 @@ public class AsyncDrawableLoaderBuilderTest {
     @Test
     public void default_media_decoder() {
 
-        assertNull(builder.defaultMediaDecoder);
+        assertNotNull(builder.defaultMediaDecoder);
 
         final MediaDecoder mediaDecoder = mock(MediaDecoder.class);
         builder.defaultMediaDecoder(mediaDecoder);

markwon-image/src/test/java/io/noties/markwon/image/AsyncDrawableLoaderImplTest.java

@@ -1,5 +1,7 @@
 package io.noties.markwon.image;
 
+import android.graphics.drawable.Drawable;
+import android.net.Uri;
 import android.os.Handler;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
@@ -7,15 +9,31 @@ import android.support.annotation.Nullable;
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
+import org.mockito.ArgumentCaptor;
+import org.mockito.invocation.InvocationOnMock;
+import org.mockito.stubbing.Answer;
 import org.robolectric.RobolectricTestRunner;
 import org.robolectric.annotation.Config;
 
+import java.io.InputStream;
+import java.util.Collection;
+import java.util.Collections;
 import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Future;
 
+import io.noties.markwon.image.ImagesPlugin.ErrorHandler;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
 import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyBoolean;
+import static org.mockito.ArgumentMatchers.anyLong;
+import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
 
 @RunWith(RobolectricTestRunner.class)
 @Config(manifest = Config.NONE)
@@ -40,60 +58,508 @@ public class AsyncDrawableLoaderImplTest {
                 .providePlaceholder(any(AsyncDrawable.class));
     }
 
+    @Test
+    public void load_cancel() {
+        // verify that load/cancel works as expected
+
+        final ExecutorService executorService = mock(ExecutorService.class);
+        final Future future = mock(Future.class);
+        {
+            //noinspection unchecked
+            when(executorService.submit(any(Runnable.class)))
+                    .thenReturn(future);
+        }
+
+        final Handler handler = mock(Handler.class);
+
+        final AsyncDrawable drawable = mock(AsyncDrawable.class);
+
+        impl = builder
+                .executorService(executorService)
+                .handler(handler)
+                .build();
+
+        impl.load(drawable);
+
+        verify(executorService, times(1)).submit(any(Runnable.class));
+
+        impl.cancel(drawable);
+
+        verify(future, times(1)).cancel(eq(true));
+        verify(handler, times(1)).removeCallbacksAndMessages(eq(drawable));
+    }
+
+    @Test
+    public void load_no_scheme_handler() {
+        // when loading is triggered for a scheme which has no registered scheme-handler
+
+        final ErrorHandler errorHandler = mock(ErrorHandler.class);
+
+        impl = builder
+                .executorService(immediateExecutorService())
+                .errorHandler(errorHandler)
+                .build();
+
+        final String destination = "blah://blah.JPEG";
+
+        impl.load(asyncDrawable(destination));
+
+        final ArgumentCaptor<Throwable> throwableCaptor = ArgumentCaptor.forClass(Throwable.class);
+        verify(errorHandler, times(1))
+                .handleError(eq(destination), throwableCaptor.capture());
+        final Throwable value = throwableCaptor.getValue();
+        assertTrue(value.getClass().getName(), value instanceof IllegalStateException);
+        assertTrue(value.getMessage(), value.getMessage().contains("No scheme-handler is found"));
+        assertTrue(value.getMessage(), value.getMessage().contains(destination));
+    }
+
+    @Test
+    public void load_scheme_handler_throws() {
+
+        final ErrorHandler errorHandler = mock(ErrorHandler.class);
+        final SchemeHandler schemeHandler = new SchemeHandler() {
+            @NonNull
+            @Override
+            public ImageItem handle(@NonNull String raw, @NonNull Uri uri) {
+                throw new RuntimeException("We throw!");
+            }
+
+            @NonNull
+            @Override
+            public Collection<String> supportedSchemes() {
+                return Collections.singleton("hey");
+            }
+        };
+
+        impl = builder
+                .executorService(immediateExecutorService())
+                .errorHandler(errorHandler)
+                .addSchemeHandler(schemeHandler)
+                .build();
+
+        final String destination = "hey://whe.er";
+
+        impl.load(asyncDrawable(destination));
+
+        final ArgumentCaptor<Throwable> captor = ArgumentCaptor.forClass(Throwable.class);
+        verify(errorHandler, times(1))
+                .handleError(eq(destination), captor.capture());
+
+        final Throwable throwable = captor.getValue();
+        assertTrue(throwable.getClass().getName(), throwable instanceof RuntimeException);
+        assertEquals("We throw!", throwable.getMessage());
+    }
+
+    @Test
+    public void load_scheme_handler_returns_result() {
+
+        final Drawable drawable = mock(Drawable.class);
+        final SchemeHandler schemeHandler = new SchemeHandler() {
+            @NonNull
+            @Override
+            public ImageItem handle(@NonNull String raw, @NonNull Uri uri) {
+                return ImageItem.withResult(drawable);
+            }
+
+            @NonNull
+            @Override
+            public Collection<String> supportedSchemes() {
+                return Collections.singleton("*");
+            }
+        };
+
+        final String destination = "*://yo";
+
+        final Future future = mock(Future.class);
+        final ExecutorService executorService = immediateExecutorService(future);
+        final Handler handler = mock(Handler.class);
+
+        impl = builder
+                .executorService(executorService)
+                .handler(handler)
+                .addSchemeHandler(schemeHandler)
+                .build();
+
+        final AsyncDrawable asyncDrawable = asyncDrawable(destination);
+
+        impl.load(asyncDrawable);
+
+        verify(executorService, times(1))
+                .submit(any(Runnable.class));
+
+        // we must use captor in order to let the internal (async) logic settle
+        final ArgumentCaptor<Runnable> captor = ArgumentCaptor.forClass(Runnable.class);
+        verify(handler, times(1))
+                .postAtTime(captor.capture(), eq(asyncDrawable), anyLong());
+
+        captor.getValue().run();
+
+        verify(asyncDrawable, times(1))
+                .setResult(eq(drawable));
+
+        // now, let's cancel the request (at this point it must be removed from referencing)
+        impl.cancel(asyncDrawable);
+
+        verify(future, never()).cancel(anyBoolean());
+
+        // this method will be called anyway (we have no mean to check if token has queue)
+//        verify(handler, never()).removeCallbacksAndMessages(eq(asyncDrawable));
+    }
+
+    @Test
+    public void load_scheme_handler_returns_decoding_default_used() {
+        // we won't be registering media decoder, but provide a default one (which must be used)
+
+        final MediaDecoder mediaDecoder = mock(MediaDecoder.class);
+        final InputStream inputStream = mock(InputStream.class);
+        final Drawable drawable = mock(Drawable.class);
+
+        {
+            when(mediaDecoder.decode(any(String.class), any(InputStream.class)))
+                    .thenReturn(drawable);
+        }
+
+        impl = builder
+                .executorService(immediateExecutorService(mock(Future.class)))
+                .defaultMediaDecoder(mediaDecoder)
+                .addSchemeHandler(new SchemeHandler() {
+                    @NonNull
+                    @Override
+                    public ImageItem handle(@NonNull String raw, @NonNull Uri uri) {
+                        return ImageItem.withDecodingNeeded("no/op", inputStream);
+                    }
+
+                    @NonNull
+                    @Override
+                    public Collection<String> supportedSchemes() {
+                        return Collections.singleton("whatever");
+                    }
+                })
+                .build();
+
+        final String destination = "whatever://yeah-yeah-yeah";
+        final AsyncDrawable asyncDrawable = asyncDrawable(destination);
+
+        impl.load(asyncDrawable);
+
+        verify(mediaDecoder, times(1))
+                .decode(eq("no/op"), eq(inputStream));
+
+        final ArgumentCaptor<Runnable> captor = ArgumentCaptor.forClass(Runnable.class);
+        verify(builder._handler, times(1))
+                .postAtTime(captor.capture(), eq(asyncDrawable), anyLong());
+
+        captor.getValue().run();
+
+        verify(asyncDrawable, times(1))
+                .setResult(eq(drawable));
+    }
+
+    @Test
+    public void load_no_media_decoder_present() {
+        // if some content-type is requested (and it has no registered media-decoder),
+        // and default-media-decoder is not added -> throws
+
+        final ErrorHandler errorHandler = mock(ErrorHandler.class);
+
+        impl = builder
+                .defaultMediaDecoder(null)
+                .executorService(immediateExecutorService())
+                .errorHandler(errorHandler)
+                .addSchemeHandler(new SchemeHandler() {
+                    @NonNull
+                    @Override
+                    public ImageItem handle(@NonNull String raw, @NonNull Uri uri) {
+                        return ImageItem.withDecodingNeeded("np/op", mock(InputStream.class));
+                    }
+
+                    @NonNull
+                    @Override
+                    public Collection<String> supportedSchemes() {
+                        return Collections.singleton("ftp");
+                    }
+                })
+                .build();
+
+        final String destination = "ftp://xxx";
+        final AsyncDrawable asyncDrawable = asyncDrawable(destination);
+
+        impl.load(asyncDrawable);
+
+        final ArgumentCaptor<Throwable> captor = ArgumentCaptor.forClass(Throwable.class);
+
+        verify(errorHandler, times(1))
+                .handleError(eq(destination), captor.capture());
+
+        final Throwable throwable = captor.getValue();
+        assertTrue(throwable.getClass().getName(), throwable instanceof IllegalStateException);
+        assertTrue(throwable.getMessage(), throwable.getMessage().contains("No media-decoder is found"));
+        assertTrue(throwable.getMessage(), throwable.getMessage().contains(destination));
+    }
+
+    @Test
+    public void load_error_handler_drawable() {
+        // error-handler can return optional error-drawable that can be used as a result
+
+        final ErrorHandler errorHandler = mock(ErrorHandler.class);
+        final Drawable drawable = mock(Drawable.class);
+        {
+            when(errorHandler.handleError(any(String.class), any(Throwable.class)))
+                    .thenReturn(drawable);
+        }
+
+        impl = builder
+                .executorService(immediateExecutorService(mock(Future.class)))
+                .errorHandler(errorHandler)
+                .build();
+
+        // we will rely on _internal_ error, which is also delivered to error-handler
+        // in this case -> no scheme-handler
+
+        final String destination = "uo://uo?true=false";
+        final AsyncDrawable asyncDrawable = asyncDrawable(destination);
+
+        impl.load(asyncDrawable);
+
+        verify(errorHandler, times(1))
+                .handleError(eq(destination), any(Throwable.class));
+
+        final ArgumentCaptor<Runnable> captor = ArgumentCaptor.forClass(Runnable.class);
+        verify(builder._handler, times(1))
+                .postAtTime(captor.capture(), eq(asyncDrawable), anyLong());
+
+        captor.getValue().run();
+
+        verify(asyncDrawable, times(1))
+                .setResult(eq(drawable));
+    }
+
+    @Test
+    public void load_success_request_cancelled() {
+        // when loading finishes it must check if request had been cancelled and not deliver result
+
+        impl = builder
+                .executorService(immediateExecutorService(mock(Future.class)))
+                .addSchemeHandler(new SchemeHandler() {
+                    @NonNull
+                    @Override
+                    public ImageItem handle(@NonNull String raw, @NonNull Uri uri) {
+                        return ImageItem.withResult(mock(Drawable.class));
+                    }
+
+                    @NonNull
+                    @Override
+                    public Collection<String> supportedSchemes() {
+                        return Collections.singleton("ja");
+                    }
+                })
+                .build();
+
+        final String destination = "ja://jajaja";
+        final AsyncDrawable asyncDrawable = asyncDrawable(destination);
+
+        impl.load(asyncDrawable);
+
+        final ArgumentCaptor<Runnable> captor = ArgumentCaptor.forClass(Runnable.class);
+        verify(builder._handler, times(1))
+                .postAtTime(captor.capture(), eq(asyncDrawable), anyLong());
+
+        // now, cancel
+        impl.cancel(asyncDrawable);
+
+        captor.getValue().run();
+
+        verify(asyncDrawable, never())
+                .setResult(any(Drawable.class));
+    }
+
+    @Test
+    public void load_success_async_drawable_not_attached() {
+        // when loading finishes, it must check if async-drawable is attached
+
+        impl = builder
+                .executorService(immediateExecutorService(mock(Future.class)))
+                .addSchemeHandler(new SchemeHandler() {
+                    @NonNull
+                    @Override
+                    public ImageItem handle(@NonNull String raw, @NonNull Uri uri) {
+                        return ImageItem.withResult(mock(Drawable.class));
+                    }
+
+                    @NonNull
+                    @Override
+                    public Collection<String> supportedSchemes() {
+                        return Collections.singleton("ha");
+                    }
+                })
+                .build();
+
+        final String destination = "ha://hahaha";
+        final AsyncDrawable asyncDrawable = asyncDrawable(destination);
+        when(asyncDrawable.isAttached()).thenReturn(false);
+
+        impl.load(asyncDrawable);
+
+        final ArgumentCaptor<Runnable> captor = ArgumentCaptor.forClass(Runnable.class);
+        verify(builder._handler, times(1))
+                .postAtTime(captor.capture(), eq(asyncDrawable), anyLong());
+
+        captor.getValue().run();
+
+        verify(asyncDrawable, never())
+                .setResult(any(Drawable.class));
+    }
+
+    @Test
+    public void load_success_result_null() {
+        // if result is null (but no exception) - no result must be delivered
+
+        // we won't be adding scheme-handler, thus causing internal error
+        // (will have to mock error-handler because for the tests we re-throw errors)
+        impl = builder
+                .executorService(immediateExecutorService(mock(Future.class)))
+                .errorHandler(mock(ErrorHandler.class))
+                .build();
+
+        final String destination = "xa://xaxaxa";
+        final AsyncDrawable asyncDrawable = asyncDrawable(destination);
+
+        impl.load(asyncDrawable);
+
+        final ArgumentCaptor<Runnable> captor = ArgumentCaptor.forClass(Runnable.class);
+        verify(builder._handler, times(1))
+                .postAtTime(captor.capture(), eq(asyncDrawable), anyLong());
+
+        captor.getValue().run();
+
+        verify(asyncDrawable, never())
+                .setResult(any(Drawable.class));
+    }
+
+    @Test
+    public void media_decoder_is_used() {
+
+        final MediaDecoder mediaDecoder = mock(MediaDecoder.class);
+
+        {
+            when(mediaDecoder.decode(any(String.class), any(InputStream.class)))
+                    .thenReturn(mock(Drawable.class));
+            when(mediaDecoder.supportedTypes())
+                    .thenReturn(Collections.singleton("fa/ke"));
+        }
+
+        impl = builder.executorService(immediateExecutorService())
+                .addSchemeHandler(new SchemeHandler() {
+                    @NonNull
+                    @Override
+                    public ImageItem handle(@NonNull String raw, @NonNull Uri uri) {
+                        return ImageItem.withDecodingNeeded("fa/ke", mock(InputStream.class));
+                    }
+
+                    @NonNull
+                    @Override
+                    public Collection<String> supportedSchemes() {
+                        return Collections.singleton("fake");
+                    }
+                })
+                .addMediaDecoder(mediaDecoder)
+                .build();
+
+        final String destination = "fake://1234";
+
+        impl.load(asyncDrawable(destination));
+
+        verify(mediaDecoder, times(1))
+                .decode(eq("fa/ke"), any(InputStream.class));
+    }
+
     private static class BuilderImpl {
 
-        AsyncDrawableLoaderBuilder builder;
-        Handler handler = mock(Handler.class);
+        AsyncDrawableLoaderBuilder _builder = new AsyncDrawableLoaderBuilder();
+        Handler _handler = mock(Handler.class);
 
-        public BuilderImpl executorService(@NonNull ExecutorService executorService) {
-            builder.executorService(executorService);
+        {
+            // be default it just logs the exception, let's rethrow
+            _builder.errorHandler(new ErrorHandler() {
+                @Nullable
+                @Override
+                public Drawable handleError(@NonNull String url, @NonNull Throwable throwable) {
+                    throw new AsyncDrawableException(url, throwable);
+                }
+            });
+        }
+
+        BuilderImpl executorService(@NonNull ExecutorService executorService) {
+            _builder.executorService(executorService);
             return this;
         }
 
-        public BuilderImpl addSchemeHandler(@NonNull SchemeHandler schemeHandler) {
-            builder.addSchemeHandler(schemeHandler);
+        BuilderImpl addSchemeHandler(@NonNull SchemeHandler schemeHandler) {
+            _builder.addSchemeHandler(schemeHandler);
             return this;
         }
 
-        public BuilderImpl addMediaDecoder(@NonNull MediaDecoder mediaDecoder) {
-            builder.addMediaDecoder(mediaDecoder);
+        BuilderImpl addMediaDecoder(@NonNull MediaDecoder mediaDecoder) {
+            _builder.addMediaDecoder(mediaDecoder);
             return this;
         }
 
-        public BuilderImpl defaultMediaDecoder(@Nullable MediaDecoder mediaDecoder) {
-            builder.defaultMediaDecoder(mediaDecoder);
+        BuilderImpl defaultMediaDecoder(@Nullable MediaDecoder mediaDecoder) {
+            _builder.defaultMediaDecoder(mediaDecoder);
             return this;
         }
 
-        public BuilderImpl removeSchemeHandler(@NonNull String scheme) {
-            builder.removeSchemeHandler(scheme);
+        BuilderImpl placeholderProvider(@NonNull ImagesPlugin.PlaceholderProvider placeholderDrawableProvider) {
+            _builder.placeholderProvider(placeholderDrawableProvider);
             return this;
         }
 
-        public BuilderImpl removeMediaDecoder(@NonNull String contentType) {
-            builder.removeMediaDecoder(contentType);
-            return this;
-        }
-
-        public BuilderImpl placeholderProvider(@NonNull ImagesPlugin.PlaceholderProvider placeholderDrawableProvider) {
-            builder.placeholderProvider(placeholderDrawableProvider);
-            return this;
-        }
-
-        public BuilderImpl errorHandler(@NonNull ImagesPlugin.ErrorHandler errorHandler) {
-            builder.errorHandler(errorHandler);
+        BuilderImpl errorHandler(@NonNull ErrorHandler errorHandler) {
+            _builder.errorHandler(errorHandler);
             return this;
         }
 
         @NonNull
-        public BuilderImpl handler(Handler handler) {
-            this.handler = handler;
+        BuilderImpl handler(Handler handler) {
+            this._handler = handler;
             return this;
         }
 
         @NonNull
         AsyncDrawableLoaderImpl build() {
-            return new AsyncDrawableLoaderImpl(builder, handler);
+            return new AsyncDrawableLoaderImpl(_builder, _handler);
+        }
+
+        private static class AsyncDrawableException extends RuntimeException {
+            AsyncDrawableException(String message, Throwable cause) {
+                super(message, cause);
+            }
         }
     }
+
+    @NonNull
+    private static ExecutorService immediateExecutorService() {
+        return immediateExecutorService(null);
+    }
+
+    @NonNull
+    private static ExecutorService immediateExecutorService(@Nullable final Future future) {
+        final ExecutorService service = mock(ExecutorService.class);
+        when(service.submit(any(Runnable.class))).then(new Answer<Future>() {
+            @Override
+            public Future answer(InvocationOnMock invocation) {
+                ((Runnable) invocation.getArgument(0)).run();
+                return future;
+            }
+        });
+        return service;
+    }
+
+    @NonNull
+    private static AsyncDrawable asyncDrawable(@NonNull String destination) {
+        final AsyncDrawable drawable = mock(AsyncDrawable.class);
+        when(drawable.getDestination()).thenReturn(destination);
+        when(drawable.isAttached()).thenReturn(true);
+        return drawable;
+    }
 }

markwon-image/src/test/java/io/noties/markwon/image/ImagesPluginTest.java

@@ -18,7 +18,6 @@ import java.util.concurrent.ExecutorService;
 import io.noties.markwon.MarkwonConfiguration;
 import io.noties.markwon.MarkwonSpansFactory;
 import io.noties.markwon.SpanFactory;
-import ru.noties.markwon.image.R;
 import io.noties.markwon.image.data.DataUriSchemeHandler;
 
 import static org.junit.Assert.assertNotNull;