[megatvcom] Add embed test (#2362)

Authored by: zmousm

yt_dlp/extractor/generic.py

@@ -1885,8 +1885,42 @@ class GenericIE(InfoExtractor):
                 'timestamp': 1641885019,
                 'upload_date': '20220111',
                 'duration': 460000,
+                'thumbnail': 'https://i3thumbs.glomex.com/dC1idjJwdndiMjRzeGwvMjAyMi8wMS8xMS8wNy8xMF8zNV82MWRkMmQ2YmU5ZTgyLmpwZw==/profile:player-960x540',
             },
         },
+        {
+            # megatvcom:embed
+            'url': 'https://www.in.gr/2021/12/18/greece/apokalypsi-mega-poios-parelave-tin-ereyna-tsiodra-ek-merous-tis-kyvernisis-o-prothypourgos-telika-gnorize/',
+            'info_dict': {
+                'id': 'apokalypsi-mega-poios-parelave-tin-ereyna-tsiodra-ek-merous-tis-kyvernisis-o-prothypourgos-telika-gnorize',
+                'title': 'md5:5e569cf996ec111057c2764ec272848f',
+            },
+            'playlist': [{
+                'md5': '1afa26064ff00ccb91617957dbc73dc1',
+                'info_dict': {
+                    'ext': 'mp4',
+                    'id': '564916',
+                    'display_id': 'md5:6cdf22d3a2e7bacb274b7295089a1770',
+                    'title': 'md5:33b9dd39584685b62873043670eb52a6',
+                    'description': 'md5:c1db7310f390518ac36dd69d947ef1a1',
+                    'timestamp': 1639753145,
+                    'upload_date': '20211217',
+                    'thumbnail': 'https://www.megatv.com/wp-content/uploads/2021/12/prezerakos-1024x597.jpg',
+                },
+            }, {
+                'md5': '4a1c220695f1ef865a8b7966a53e2474',
+                'info_dict': {
+                    'ext': 'mp4',
+                    'id': '564905',
+                    'display_id': 'md5:ead15695e485e649aed2b81ebd699b88',
+                    'title': 'md5:2b71fd54249a3ca34609fe39ae31c47b',
+                    'description': 'md5:c42e12f638d0a97d6de4508e2c4df982',
+                    'timestamp': 1639753047,
+                    'upload_date': '20211217',
+                    'thumbnail': 'https://www.megatv.com/wp-content/uploads/2021/12/tsiodras-mitsotakis-1024x545.jpg',
+                },
+            }]
+        },
         {
             # ThePlatform embedded with whitespaces in URLs
             'url': 'http://www.golfchannel.com/topics/shows/golftalkcentral.htm',