Remove public modifier from tests

Author: litetex

extractor/src/test/java/org/schabi/newpipe/extractor/services/youtube/YoutubeSubscriptionExtractorTest.java

@@ -26,8 +26,7 @@
 /**
  * Test for {@link YoutubeSubscriptionExtractor}
  */
-public class YoutubeSubscriptionExtractorTest {
-
+class YoutubeSubscriptionExtractorTest {
 
     private static YoutubeSubscriptionExtractor subscriptionExtractor;
     private static LinkHandlerFactory urlHandler;
@@ -41,7 +40,7 @@ public static void setupClass() {
     }
 
     @Test
-    public void testFromInputStream() throws Exception {
+    void testFromInputStream() throws Exception {
         final List<SubscriptionItem> subscriptionItems = subscriptionExtractor.fromInputStream(
                 new FileInputStream(resolveTestResource("youtube_takeout_import_test.json")));
         assertEquals(7, subscriptionItems.size());
@@ -55,14 +54,14 @@ public void testFromInputStream() throws Exception {
     }
 
     @Test
-    public void testEmptySourceException() throws Exception {
+    void testEmptySourceException() throws Exception {
         final List<SubscriptionItem> items = subscriptionExtractor.fromInputStream(
                 new ByteArrayInputStream("[]".getBytes(StandardCharsets.UTF_8)));
         assertTrue(items.isEmpty());
     }
 
     @Test
-    public void testSubscriptionWithEmptyTitleInSource() throws Exception {
+    void testSubscriptionWithEmptyTitleInSource() throws Exception {
         final String source = "[{\"snippet\":{\"resourceId\":{\"channelId\":\"UCEOXxzW2vU0P-0THehuIIeg\"}}}]";
         final List<SubscriptionItem> items = subscriptionExtractor.fromInputStream(
                 new ByteArrayInputStream(source.getBytes(StandardCharsets.UTF_8)));
@@ -74,7 +73,7 @@ public void testSubscriptionWithEmptyTitleInSource() throws Exception {
     }
 
     @Test
-    public void testSubscriptionWithInvalidUrlInSource() throws Exception {
+    void testSubscriptionWithInvalidUrlInSource() throws Exception {
         final String source = "[{\"snippet\":{\"resourceId\":{\"channelId\":\"gibberish\"},\"title\":\"name1\"}}," +
                 "{\"snippet\":{\"resourceId\":{\"channelId\":\"UCEOXxzW2vU0P-0THehuIIeg\"},\"title\":\"name2\"}}]";
         final List<SubscriptionItem> items = subscriptionExtractor.fromInputStream(
@@ -87,8 +86,8 @@ public void testSubscriptionWithInvalidUrlInSource() throws Exception {
     }
 
     @Test
-    public void testInvalidSourceException() {
-        List<String> invalidList = Arrays.asList(
+    void testInvalidSourceException() {
+        final List<String> invalidList = Arrays.asList(
                 "<xml><notvalid></notvalid></xml>",
                 "<opml><notvalid></notvalid></opml>",
                 "{\"a\":\"b\"}",
@@ -100,13 +99,14 @@ public void testInvalidSourceException() {
                 "\uD83D\uDC28\uD83D\uDC28\uD83D\uDC28",
                 "gibberish");
 
-        for (String invalidContent : invalidList) {
+        for (final String invalidContent : invalidList) {
             try {
-                byte[] bytes = invalidContent.getBytes(StandardCharsets.UTF_8);
+                final byte[] bytes = invalidContent.getBytes(StandardCharsets.UTF_8);
                 subscriptionExtractor.fromInputStream(new ByteArrayInputStream(bytes));
                 fail("Extracting from \"" + invalidContent + "\" didn't throw an exception");
             } catch (final Exception e) {
-                boolean correctType = e instanceof SubscriptionExtractor.InvalidSourceException;
+                final boolean correctType =
+                    e instanceof SubscriptionExtractor.InvalidSourceException;
                 if (!correctType) {
                     e.printStackTrace();
                 }
@@ -117,7 +117,7 @@ public void testInvalidSourceException() {
 
     private static void assertSubscriptionItems(final List<SubscriptionItem> subscriptionItems)
             throws Exception {
-        assertTrue(subscriptionItems.size() > 0);
+        assertTrue(!subscriptionItems.isEmpty());
 
         for (final SubscriptionItem item : subscriptionItems) {
             assertNotNull(item.getName());
@@ -128,7 +128,7 @@ private static void assertSubscriptionItems(final List<SubscriptionItem> subscri
     }
 
     @Test
-    public void fromZipInputStream() throws Exception {
+    void fromZipInputStream() throws Exception {
         final List<String> zipPaths = Arrays.asList(
                 "youtube_takeout_import_test_1.zip",
                 "youtube_takeout_import_test_2.zip"
@@ -144,13 +144,13 @@ public void fromZipInputStream() throws Exception {
     }
 
     @Test
-    public void fromCsvInputStream() throws Exception {
+    void fromCsvInputStream() throws Exception {
         final List<String> csvPaths = Arrays.asList(
                 "youtube_takeout_import_test_1.csv",
                 "youtube_takeout_import_test_2.csv"
         );
 
-        for (String path : csvPaths)
+        for (final String path : csvPaths)
         {
             final File file = resolveTestResource(path);
             final FileInputStream fileInputStream = new FileInputStream(file);