Add method to allow resetting youtube client version and key

This is needed so that a request is made for each test class when running multiple at once. This way RecordingDownloader records all necessary requests.
This works as long as tests are run sequentially and not in parallel.

Author: XiangRongLin

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

@@ -353,6 +353,11 @@ public static String getKey() throws IOException, ExtractionException {
         return key;
     }
 
+    static void resetClientVersionAndKey() {
+        clientVersion = null;
+        key = null;
+    }
+
     public static boolean areHardcodedYoutubeMusicKeysValid() throws IOException, ReCaptchaException {
         final String url = "https://music.youtube.com/youtubei/v1/search?alt=json&key=" + HARDCODED_YOUTUBE_MUSIC_KEYS[0];
 

extractor/src/test/java/org/schabi/newpipe/downloader/MockDownloader.java

@@ -31,15 +31,6 @@ public MockDownloader(@Nonnull String path) throws IOException {
             reader.close();
             mocks.put(response.getRequest(), response.getResponse());
         }
-
-        //shared find proper solution
-        File clientVersion = new File("src/test/resources/org/schabi/newpipe/extractor/services/youtube/client_version.json");
-        final FileReader reader = new FileReader(clientVersion);
-        final TestRequestResponse response = new GsonBuilder()
-                .create()
-                .fromJson(reader, TestRequestResponse.class);
-        reader.close();
-        mocks.put(response.getRequest(), response.getResponse());
     }
 
     @Override

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

@@ -53,6 +53,7 @@ public static class Mix {
 
         @BeforeClass
         public static void setUp() throws Exception {
+            YoutubeParsingHelper.resetClientVersionAndKey();
             final File file = new File(RESOURCE_PATH + "mix");
             NewPipe.init(new DownloaderFactory().getDownloader(file.getAbsolutePath()));
             extractor = (YoutubeMixPlaylistExtractor) YouTube
@@ -131,6 +132,7 @@ public static class MixWithIndex {
 
         @BeforeClass
         public static void setUp() throws Exception {
+            YoutubeParsingHelper.resetClientVersionAndKey();
             final File file = new File(RESOURCE_PATH + "mixWithIndex");
             NewPipe.init(new DownloaderFactory().getDownloader(file.getAbsolutePath()));
             extractor = (YoutubeMixPlaylistExtractor) YouTube
@@ -201,6 +203,7 @@ public static class MyMix {
 
         @BeforeClass
         public static void setUp() throws Exception {
+            YoutubeParsingHelper.resetClientVersionAndKey();
             final File file = new File(RESOURCE_PATH + "myMix");
             NewPipe.init(new DownloaderFactory().getDownloader(file.getAbsolutePath()));
             extractor = (YoutubeMixPlaylistExtractor) YouTube
@@ -274,6 +277,7 @@ public static class Invalid {
 
         @BeforeClass
         public static void setUp() throws IOException {
+            YoutubeParsingHelper.resetClientVersionAndKey();
             final File file = new File(RESOURCE_PATH + "invalid");
             NewPipe.init(new DownloaderFactory().getDownloader(file.getAbsolutePath()));
         }
@@ -306,6 +310,7 @@ public static class ChannelMix {
 
         @BeforeClass
         public static void setUp() throws Exception {
+            YoutubeParsingHelper.resetClientVersionAndKey();
             final File file = new File(RESOURCE_PATH + "channelMix");
             NewPipe.init(new DownloaderFactory().getDownloader(file.getAbsolutePath()));
             extractor = (YoutubeMixPlaylistExtractor) YouTube