[SoundCloud] Add test to check that next pages are not empty for tabs

Author: TobiGr

extractor/src/test/java/org/schabi/newpipe/extractor/services/soundcloud/SoundcloudChannelTabExtractorTest.java

@@ -1,15 +1,21 @@
 package org.schabi.newpipe.extractor.services.soundcloud;
 
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.schabi.newpipe.extractor.ExtractorAsserts.assertEmptyErrors;
 import static org.schabi.newpipe.extractor.ServiceList.SoundCloud;
 import static org.schabi.newpipe.extractor.services.DefaultTests.defaultTestGetPageInNewExtractor;
 
 import org.junit.jupiter.api.Test;
 import org.schabi.newpipe.extractor.InfoItem;
+import org.schabi.newpipe.extractor.ListExtractor;
 import org.schabi.newpipe.extractor.StreamingService;
 import org.schabi.newpipe.extractor.channel.tabs.ChannelTabExtractor;
 import org.schabi.newpipe.extractor.channel.tabs.ChannelTabs;
 import org.schabi.newpipe.extractor.services.DefaultListExtractorTest;
 
+import java.util.List;
+
 class SoundcloudChannelTabExtractorTest {
 
     static class Tracks extends DefaultListExtractorTest<ChannelTabExtractor> {
@@ -88,4 +94,30 @@ protected ChannelTabExtractor createExtractor() throws Exception {
         @Override public String expectedOriginalUrlContains() throws Exception { return "https://soundcloud.com/soreen-735855039/likes"; }
         @Override public InfoItem.InfoType expectedInfoItemType() { return InfoItem.InfoType.PLAYLIST; }
     }
+
+    static class NoEmptyNextPages extends DefaultListExtractorTest<ChannelTabExtractor> {
+        @Override
+        protected ChannelTabExtractor createExtractor() throws Exception {
+            return SoundCloud.getChannelTabExtractorFromId("73637815", ChannelTabs.TRACKS);
+        }
+
+        @Override public StreamingService expectedService() throws Exception { return SoundCloud; }
+        @Override public String expectedName() throws Exception { return ChannelTabs.TRACKS; }
+        @Override public String expectedId() throws Exception { return "73637815"; }
+        @Override public String expectedUrlContains() throws Exception { return "https://soundcloud.com/hurtbox/tracks"; }
+        @Override public String expectedOriginalUrlContains() throws Exception { return "https://soundcloud.com/hurtbox/tracks"; }
+        @Override public InfoItem.InfoType expectedInfoItemType() { return InfoItem.InfoType.STREAM; }
+
+        @Test
+        public void testNextPages() throws Exception {
+            ListExtractor.InfoItemsPage<InfoItem> page = extractor().getInitialPage();
+            for  (int i = 1; i <= 5; i++) {
+                assertEmptyErrors("Next page has errors", page.getErrors());
+                assertFalse(page.getItems().isEmpty(), "Next page is empty");
+                assertTrue(page.hasNextPage(), "Next page does not have more items");
+                page = extractor().getPage(page.getNextPage());
+            }
+        }
+
+    }
 }