[Test] Add stream metadata tests

extractor/src/test/java/org/schabi/newpipe/extractor/ExtractorAsserts.java

@@ -2,6 +2,8 @@ package org.schabi.newpipe.extractor;
 
 import java.net.MalformedURLException;
 import java.net.URL;
+import java.util.Collections;
+import java.util.Comparator;
 import java.util.List;
 
 import javax.annotation.Nonnull;
@@ -10,6 +12,7 @@ import javax.annotation.Nullable;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertTrue;
 
 public class ExtractorAsserts {
@@ -64,4 +67,18 @@ public class ExtractorAsserts {
     public static void assertAtLeast(long expected, long actual) {
         assertTrue(actual + " is not at least " + expected, actual >= expected);
     }
+
+    // this assumes that sorting a and b in-place is not an issue, so it's only intended for tests
+    public static void assertEqualsOrderIndependent(List<String> expected, List<String> actual) {
+        if (expected == null) {
+            assertNull(actual);
+            return;
+        } else {
+            assertNotNull(actual);
+        }
+
+        Collections.sort(expected);
+        Collections.sort(actual);
+        assertEquals(expected, actual);
+    }
 }

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

@@ -21,4 +21,11 @@ public interface BaseStreamExtractorTest extends BaseExtractorTest {
     void testVideoStreams() throws Exception;
     void testSubtitles() throws Exception;
     void testFrames() throws Exception;
+    void testHost() throws Exception;
+    void testPrivacy() throws Exception;
+    void testCategory() throws Exception;
+    void testLicence() throws Exception;
+    void testLanguageInfo() throws Exception;
+    void testTags() throws Exception;
+    void testSupportInfo() throws Exception;
 }

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

@@ -14,7 +14,9 @@ import org.schabi.newpipe.extractor.stream.VideoStream;
 
 import java.text.SimpleDateFormat;
 import java.util.Calendar;
+import java.util.Collections;
 import java.util.List;
+import java.util.Locale;
 import java.util.TimeZone;
 
 import javax.annotation.Nullable;
@@ -27,6 +29,7 @@ import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertThat;
 import static org.junit.Assert.assertTrue;
 import static org.schabi.newpipe.extractor.ExtractorAsserts.assertAtLeast;
+import static org.schabi.newpipe.extractor.ExtractorAsserts.assertEqualsOrderIndependent;
 import static org.schabi.newpipe.extractor.ExtractorAsserts.assertIsSecureUrl;
 import static org.schabi.newpipe.extractor.ExtractorAsserts.assertIsValidUrl;
 import static org.schabi.newpipe.extractor.services.DefaultTests.defaultTestListOfItems;
@@ -42,7 +45,7 @@ public abstract class DefaultStreamExtractorTest extends DefaultExtractorTest<St
     public abstract String expectedUploaderUrl();
     public abstract List<String> expectedDescriptionContains(); // e.g. for full links
     public abstract long expectedLength();
-    public long expectedTimestamp() { return 0; }; // default: there is no timestamp
+    public long expectedTimestamp() { return 0; } // default: there is no timestamp
     public abstract long expectedViewCountAtLeast();
     @Nullable public abstract String expectedUploadDate(); // format: "yyyy-MM-dd HH:mm:ss.SSS"
     @Nullable public abstract String expectedTextualUploadDate();
@@ -55,6 +58,13 @@ public abstract class DefaultStreamExtractorTest extends DefaultExtractorTest<St
     public boolean expectedHasAudioStreams() { return true; } // default: there are audio streams
     public boolean expectedHasSubtitles() { return true; } // default: there are subtitles streams
     public boolean expectedHasFrames() { return true; } // default: there are frames
+    public String expectedHost() { return ""; } // default: no host for centralized platforms
+    public String expectedPrivacy() { return ""; } // default: no privacy policy available
+    public String expectedCategory() { return ""; } // default: no category
+    public String expectedLicence() { return ""; } // default: no licence
+    public Locale expectedLanguageInfo() { return null; } // default: no language info available
+    public List<String> expectedTags() { return Collections.emptyList(); } // default: no tags
+    public String expectedSupportInfo() { return ""; } // default: no support info available
 
     @Test
     @Override
@@ -283,4 +293,46 @@ public abstract class DefaultStreamExtractorTest extends DefaultExtractorTest<St
             assertTrue(frames.isEmpty());
         }
     }
+
+    @Test
+    @Override
+    public void testHost() throws Exception {
+        assertEquals(expectedHost(), extractor().getHost());
+    }
+
+    @Test
+    @Override
+    public void testPrivacy() throws Exception {
+        assertEquals(expectedPrivacy(), extractor().getPrivacy());
+    }
+
+    @Test
+    @Override
+    public void testCategory() throws Exception {
+        assertEquals(expectedCategory(), extractor().getCategory());
+    }
+
+    @Test
+    @Override
+    public void testLicence() throws Exception {
+        assertEquals(expectedLicence(), extractor().getLicence());
+    }
+
+    @Test
+    @Override
+    public void testLanguageInfo() throws Exception {
+        assertEquals(expectedLanguageInfo(), extractor().getLanguageInfo());
+    }
+
+    @Test
+    @Override
+    public void testTags() throws Exception {
+        assertEqualsOrderIndependent(expectedTags(), extractor().getTags());
+    }
+
+    @Test
+    @Override
+    public void testSupportInfo() throws Exception {
+        assertEquals(expectedSupportInfo(), extractor().getSupportInfo());
+    }
 }

extractor/src/test/java/org/schabi/newpipe/extractor/services/media_ccc/MediaCCCStreamExtractorTest.java

@@ -56,6 +56,7 @@ public class MediaCCCStreamExtractorTest {
         @Override public boolean expectedHasRelatedStreams() { return false; }
         @Override public boolean expectedHasSubtitles() { return false; }
         @Override public boolean expectedHasFrames() { return false; }
+        @Override public List<String> expectedTags() { return Arrays.asList("gpn18", "105"); }
 
         @Override
         @Test
@@ -118,6 +119,7 @@ public class MediaCCCStreamExtractorTest {
         @Override public boolean expectedHasRelatedStreams() { return false; }
         @Override public boolean expectedHasSubtitles() { return false; }
         @Override public boolean expectedHasFrames() { return false; }
+        @Override public List<String> expectedTags() { return Arrays.asList("36c3", "10565", "2019", "Security", "Main"); }
 
         @Override
         @Test

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

@@ -84,7 +84,12 @@ public class PeertubeStreamExtractorTest {
         @Override public long expectedDislikeCountAtLeast() { return 0; }
         @Override public boolean expectedHasAudioStreams() { return false; }
         @Override public boolean expectedHasFrames() { return false; }
-
+        @Override public String expectedHost() { return "framatube.org"; }
+        @Override public String expectedPrivacy() { return "Public"; }
+        @Override public String expectedCategory() { return "Science & Technology"; }
+        @Override public String expectedLicence() { return "Attribution - Share Alike"; }
+        @Override public Locale expectedLanguageInfo() { return Locale.forLanguageTag("en"); }
+        @Override public List<String> expectedTags() { return Arrays.asList("framasoft", "peertube"); }
     }
 
     public static class AgeRestricted extends DefaultStreamExtractorTest {
@@ -136,6 +141,12 @@ public class PeertubeStreamExtractorTest {
         @Override public boolean expectedHasAudioStreams() { return false; }
         @Override public boolean expectedHasSubtitles() { return false; }
         @Override public boolean expectedHasFrames() { return false; }
+        @Override public String expectedHost() { return "peertube.iriseden.eu"; }
+        @Override public String expectedPrivacy() { return "Public"; }
+        @Override public String expectedCategory() { return "News & Politics"; }
+        @Override public String expectedLicence() { return "Attribution - Share Alike"; }
+        @Override public Locale expectedLanguageInfo() { return Locale.forLanguageTag("ru"); }
+        @Override public List<String> expectedTags() { return Arrays.asList("ДНР", "ЛНР", "Кремль", "Новороссия", "ФСБ"); }
     }