Fix test failure

Author: Isira-Seneviratne

extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/YoutubeParsingHelper.java

@@ -1525,12 +1525,13 @@ public static JsonBuilder<JsonObject> prepareJsonBuilder(
      */
     @Nonnull
     public static Optional<JsonObject> getFirstCollaborator(final JsonObject renderer) {
-        final JsonArray listItems = renderer.getObject(NAVIGATION_ENDPOINT)
-                .getObject("showDialogCommand").getObject("panelLoadingStrategy")
-                .getObject("inlineContent").getObject("dialogViewModel")
-                .getObject("customContent").getObject("listViewModel")
-                .getArray("listItems");
-        return Optional.ofNullable(listItems.getObject(0)
-                .getObject("listItemViewModel", null));
+        try {
+            // CHECKSTYLE:OFF
+            final JsonArray listItems = JsonUtils.getArray(renderer, "showDialogCommand.panelLoadingStrategy.inlineContent.dialogViewModel.customContent.listViewModel.listItems");
+            // CHECKSTYLE:ON
+            return Optional.ofNullable(listItems.getObject(0).getObject("listItemViewModel", null));
+        } catch (final ParsingException e) {
+            return Optional.empty();
+        }
     }
 }

extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/extractors/YoutubeStreamExtractor.java

@@ -26,9 +26,11 @@
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.CONTENT_CHECK_OK;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.CPN;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.RACY_CHECK_OK;
+import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.STRING_PREDICATE;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.VIDEO_ID;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.fixThumbnailUrl;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.generateContentPlaybackNonce;
+import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getFirstCollaborator;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getImagesFromThumbnailsArray;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getJsonPostResponse;
 import static org.schabi.newpipe.extractor.services.youtube.YoutubeParsingHelper.getTextFromObject;
@@ -493,7 +495,7 @@ public boolean isUploaderVerified() {
 
         return Optional.ofNullable(videoOwnerRenderer.getArray("badges", null))
                 .map(YoutubeParsingHelper::isVerified)
-                .or(() -> YoutubeParsingHelper.getFirstCollaborator(videoOwnerRenderer)
+                .or(() -> getFirstCollaborator(videoOwnerRenderer)
                         .map(channel -> {
                             final var attachmentRuns = channel.getObject(TITLE)
                                     .getArray("attachmentRuns");
@@ -534,26 +536,19 @@ public List<Image> getUploaderAvatars() throws ParsingException {
 
     @Override
     public long getUploaderSubscriberCount() throws ParsingException {
-        final JsonObject videoOwnerRenderer = JsonUtils.getObject(getVideoSecondaryInfoRenderer(),
+        final var renderer = JsonUtils.getObject(getVideoSecondaryInfoRenderer(),
                 "owner.videoOwnerRenderer");
+        final var subscriberCountText = getTextFromObject(renderer.getObject("subscriberCountText"))
+                .or(() -> getFirstCollaborator(renderer.getObject("navigationEndpoint"))
+                        .map(endpoint -> endpoint.getObject("subtitle").getString("content")))
+                .filter(STRING_PREDICATE);
 
-        final String subscriberCountText;
-        if (videoOwnerRenderer.has("subscriberCountText")) {
-            subscriberCountText = getTextFromObject(videoOwnerRenderer
-                    .getObject("subscriberCountText")).orElse(null);
-        } else {
-            subscriberCountText = YoutubeParsingHelper
-                    .getFirstCollaborator(videoOwnerRenderer.getObject("navigationEndpoint"))
-                    .map(endpoint -> endpoint.getObject("subtitle").getString("content"))
-                    .orElse(null);
-        }
-
-        if (isNullOrEmpty(subscriberCountText)) {
+        if (subscriberCountText.isEmpty()) {
             return UNKNOWN_SUBSCRIBER_COUNT;
         }
 
         try {
-            return Utils.mixedNumberWordToLong(subscriberCountText);
+            return Utils.mixedNumberWordToLong(subscriberCountText.get());
         } catch (final NumberFormatException e) {
             throw new ParsingException("Could not get uploader subscriber count", e);
         }