Merge pull request #447 from Stypox/better-deobfuscation

[YouTube] Cache deobfuscation code and more fixes

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

@@ -94,7 +94,7 @@ public class ItagItem {
                 return item;
             }
         }
-        throw new ParsingException("itag=" + Integer.toString(itagId) + " not supported");
+        throw new ParsingException("itag=" + itagId + " not supported");
     }
 
     /*//////////////////////////////////////////////////////////////////////////

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

@@ -209,6 +209,7 @@ public abstract class DefaultStreamExtractorTest extends DefaultExtractorTest<St
         final StreamInfoItemsCollector relatedStreams = extractor().getRelatedStreams();
 
         if (expectedHasRelatedStreams()) {
+            assertNotNull(relatedStreams);
             defaultTestListOfItems(extractor().getService(), relatedStreams.getItems(),
                     relatedStreams.getErrors());
         } else {

extractor/src/test/java/org/schabi/newpipe/extractor/services/youtube/stream/YoutubeStreamExtractorLivestreamTest.java

@@ -45,8 +45,8 @@ public class YoutubeStreamExtractorLivestreamTest extends DefaultStreamExtractor
     @Override public long expectedLength() { return 0; }
     @Override public long expectedTimestamp() { return TIMESTAMP; }
     @Override public long expectedViewCountAtLeast() { return 0; }
-    @Nullable @Override public String expectedUploadDate() { return null; }
-    @Nullable @Override public String expectedTextualUploadDate() { return null; }
+    @Nullable @Override public String expectedUploadDate() { return "2020-02-22 00:00:00.000"; }
+    @Nullable @Override public String expectedTextualUploadDate() { return "2020-02-22"; }
     @Override public long expectedLikeCountAtLeast() { return 825000; }
     @Override public long expectedDislikeCountAtLeast() { return 15600; }
     @Override public boolean expectedHasSubtitles() { return false; }