[Test] Add sub channel name, url and thumbnail tests

extractor/src/test/java/org/schabi/newpipe/extractor/services/BaseStreamExtractorTest.java

@@ -5,6 +5,9 @@ public interface BaseStreamExtractorTest extends BaseExtractorTest {
     void testUploaderName() throws Exception;
     void testUploaderUrl() throws Exception;
     void testUploaderAvatarUrl() throws Exception;
+    void testSubChannelName() throws Exception;
+    void testSubChannelUrl() throws Exception;
+    void testSubChannelAvatarUrl() throws Exception;
     void testThumbnailUrl() throws Exception;
     void testDescription() throws Exception;
     void testLength() throws Exception;

extractor/src/test/java/org/schabi/newpipe/extractor/services/DefaultStreamExtractorTest.java

@@ -43,6 +43,8 @@ public abstract class DefaultStreamExtractorTest extends DefaultExtractorTest<St
     public abstract StreamType expectedStreamType();
     public abstract String expectedUploaderName();
     public abstract String expectedUploaderUrl();
+    public String expectedSubChannelName() { return ""; } // default: there is no subchannel
+    public String expectedSubChannelUrl() { return ""; } // default: there is no subchannel
     public abstract List<String> expectedDescriptionContains(); // e.g. for full links
     public abstract long expectedLength();
     public long expectedTimestamp() { return 0; } // default: there is no timestamp
@@ -92,6 +94,36 @@ public abstract class DefaultStreamExtractorTest extends DefaultExtractorTest<St
         assertIsSecureUrl(extractor().getUploaderAvatarUrl());
     }
 
+    @Test
+    @Override
+    public void testSubChannelName() throws Exception {
+        assertEquals(expectedSubChannelName(), extractor().getSubChannelName());
+    }
+
+    @Test
+    @Override
+    public void testSubChannelUrl() throws Exception {
+        final String subChannelUrl = extractor().getSubChannelUrl();
+        assertEquals(expectedSubChannelUrl(), subChannelUrl);
+
+        if (!expectedSubChannelUrl().isEmpty()) {
+            // this stream has a subchannel
+            assertIsSecureUrl(subChannelUrl);
+        }
+    }
+
+    @Test
+    @Override
+    public void testSubChannelAvatarUrl() throws Exception {
+        if (expectedSubChannelName().isEmpty() && expectedSubChannelUrl().isEmpty()) {
+            // this stream has no subchannel
+            assertEquals("", extractor().getSubChannelAvatarUrl());
+        } else {
+            // this stream has a subchannel
+            assertIsSecureUrl(extractor().getSubChannelAvatarUrl());
+        }
+    }
+
     @Test
     @Override
     public void testThumbnailUrl() throws Exception {

extractor/src/test/java/org/schabi/newpipe/extractor/services/peertube/PeertubeStreamExtractorTest.java

@@ -56,6 +56,8 @@ public class PeertubeStreamExtractorTest {
         @Override public StreamType expectedStreamType() { return StreamType.VIDEO_STREAM; }
         @Override public String expectedUploaderName() { return "Framasoft"; }
         @Override public String expectedUploaderUrl() { return "https://framatube.org/accounts/framasoft@framatube.org"; }
+        @Override public String expectedSubChannelName() { return "Les vidéos de Framasoft"; }
+        @Override public String expectedSubChannelUrl() { return "https://framatube.org/video-channels/bf54d359-cfad-4935-9d45-9d6be93f63e8"; }
         @Override public List<String> expectedDescriptionContains() { // CRLF line ending
             return Arrays.asList("**[Want to help to translate this video?](https://weblate.framasoft.org/projects/what-is-peertube-video/)**\r\n"
                     + "\r\n"
@@ -117,6 +119,8 @@ public class PeertubeStreamExtractorTest {
         @Override public StreamType expectedStreamType() { return StreamType.VIDEO_STREAM; }
         @Override public String expectedUploaderName() { return "Tomas Berezovskiy"; }
         @Override public String expectedUploaderUrl() { return "https://peertube.co.uk/accounts/tomas_berezovskiy@peertube.iriseden.eu"; }
+        @Override public String expectedSubChannelName() { return "smm.expx3"; }
+        @Override public String expectedSubChannelUrl() { return "https://peertube.iriseden.eu/video-channels/smm.expx3"; }
         @Override public List<String> expectedDescriptionContains() { // LF line ending
             return Arrays.asList("https://en.informnapalm.org/dpr-combatant-describes-orders-given-russian-officers/ "
                     + " The InformNapalm team received another video of a separatist prisoner of war telling about his "