Update closed captions test

lib/src/reverse_engineering/responses/closed_caption_track_response.dart

@@ -23,8 +23,8 @@ class ClosedCaptionTrackResponse {
 
   ///
   static Future<ClosedCaptionTrackResponse> get(
-      YoutubeHttpClient httpClient, String url) {
-    var formatUrl = Uri.parse(url).replaceQueryParameters({'fmt': 'srv3'});
+      YoutubeHttpClient httpClient, Uri url) {
+    var formatUrl = url.replaceQueryParameters({'fmt': 'srv3'});
     return retry(() async {
       var raw = await httpClient.getString(formatUrl);
       return ClosedCaptionTrackResponse.parse(raw);

lib/src/videos/closed_captions/closed_caption_client.dart

@@ -79,7 +79,7 @@ class ClosedCaptionClient {
   /// identified by the specified metadata.
   Future<ClosedCaptionTrack> get(ClosedCaptionTrackInfo trackInfo) async {
     var response = await ClosedCaptionTrackResponse.get(
-        _httpClient, trackInfo.url.toString());
+        _httpClient, trackInfo.url);
 
     var captions = response.closedCaptions
         .where((e) => !e.text.isNullOrWhiteSpace)
@@ -88,16 +88,6 @@ class ClosedCaptionClient {
     return ClosedCaptionTrack(captions);
   }
 
-  /// Auto translated a closed caption track.
-  ClosedCaptionTrackInfo autoTranslate(
-      ClosedCaptionTrackInfo trackInfo, String lang) {
-    return ClosedCaptionTrackInfo(
-        trackInfo.url.replaceQueryParameters({'tlang': lang}),
-        Language(lang, ''),
-        isAutoGenerated: trackInfo.isAutoGenerated,
-        format: trackInfo.format);
-  }
-
   /// Returns the subtitles as a string.
   Future<String> getSubTitles(ClosedCaptionTrackInfo trackInfo) =>
       _httpClient.getString(trackInfo.url);

lib/src/videos/closed_captions/closed_caption_manifest.dart

@@ -12,14 +12,16 @@ class ClosedCaptionManifest {
   ClosedCaptionManifest(Iterable<ClosedCaptionTrackInfo> tracks)
       : tracks = UnmodifiableListView(tracks);
 
-  /// Gets the closed caption track in the specified language.
-  /// Returns null if not found.
-  ClosedCaptionTrackInfo getByLanguage(String language) {
+  /// Gets all the closed caption tracks in the specified language and format.
+  /// Returns an empty list of no track is found.
+  List<ClosedCaptionTrackInfo> getByLanguage(String language,
+      {ClosedCaptionFormat format}) {
     language = language.toLowerCase();
-    return tracks.firstWhere(
-        (e) =>
-            e.language.code.toLowerCase() == language ||
-            e.language.name.toLowerCase() == language,
-        orElse: () => null);
+    return tracks
+        .where((e) =>
+            (e.language.code.toLowerCase() == language ||
+                e.language.name.toLowerCase() == language) &&
+            (format == null || e.format == format))
+        .toList();
   }
 }

lib/src/videos/closed_captions/closed_caption_track_info.dart

@@ -1,5 +1,6 @@
 import 'package:equatable/equatable.dart';
 
+import '../../extensions/helpers_extension.dart';
 import 'language.dart';
 
 /// Metadata associated with a certain [ClosedCaptionTrack]
@@ -21,6 +22,17 @@ class ClosedCaptionTrackInfo extends Equatable {
       {this.isAutoGenerated = false, this.format})
       : assert(format != null);
 
+  /// Returns this auto-translated to another language.
+  /// Keeping the same format.
+  ClosedCaptionTrackInfo autoTranslate(
+      ClosedCaptionTrackInfo trackInfo, String lang) {
+    return ClosedCaptionTrackInfo(
+        trackInfo.url.replaceQueryParameters({'tlang': lang}),
+        Language(lang, ''),
+        isAutoGenerated: trackInfo.isAutoGenerated,
+        format: trackInfo.format);
+  }
+
   @override
   String toString() => 'CC Track ($language)';
 

test/closed_caption_test.dart

@@ -22,11 +22,11 @@ void main() {
 
     expect(track.captions, isNotEmpty);
   });
-  test('Get closed caption track at a specific time', () async {
+  test('Get auto-generated closed caption track at a specific time', () async {
     var manifest = await yt.videos.closedCaptions
-        .getManifest('https://www.youtube.com/watch?v=ppJy5uGZLi4');
+        .getManifest('https://www.youtube.com/watch?v=ppJy5uGZLi4', autoGenerated: true);
     var trackInfo = manifest.getByLanguage('en');
-    var track = await yt.videos.closedCaptions.get(trackInfo);
+    var track = await yt.videos.closedCaptions.get(trackInfo.first);
     var caption =
         track.getByTime(const Duration(hours: 0, minutes: 13, seconds: 22));
     var captionPart = caption.getPartByTime(const Duration(milliseconds: 200));