[utils] Revert bbd3e7e, updating docstring, test instead

2 files changed, 24 insertions, 25 deletions

diff --git a/test/test_utils.py b/test/test_utils.py
index fdae1f744..102420fcb 100644
--- a/test/test_utils.py
+++ b/test/test_utils.py
@@ -62,13 +62,14 @@ from youtube_dl.utils import (
     OnDemandPagedList,
     orderedSet,
     parse_age_limit,
+    parse_bitrate,
     parse_duration,
     parse_filesize,
     parse_codecs,
     parse_count,
     parse_iso8601,
     parse_resolution,
-    parse_bitrate,
+    parse_qs,
     pkcs1pad,
     prepend_extension,
     read_batch_urls,
@@ -125,7 +126,6 @@ from youtube_dl.compat import (
     compat_setenv,
     compat_str,
     compat_urlparse,
-    compat_parse_qs,
 )
 
 
@@ -683,38 +683,36 @@ class TestUtil(unittest.TestCase):
         self.assertTrue(isinstance(data, bytes))
 
     def test_update_url_query(self):
-        def query_dict(url):
-            return compat_parse_qs(compat_urlparse.urlparse(url).query)
-        self.assertEqual(query_dict(update_url_query(
+        self.assertEqual(parse_qs(update_url_query(
             'http://example.com/path', {'quality': ['HD'], 'format': ['mp4']})),
-            query_dict('http://example.com/path?quality=HD&format=mp4'))
-        self.assertEqual(query_dict(update_url_query(
+            parse_qs('http://example.com/path?quality=HD&format=mp4'))
+        self.assertEqual(parse_qs(update_url_query(
             'http://example.com/path', {'system': ['LINUX', 'WINDOWS']})),
-            query_dict('http://example.com/path?system=LINUX&system=WINDOWS'))
-        self.assertEqual(query_dict(update_url_query(
+            parse_qs('http://example.com/path?system=LINUX&system=WINDOWS'))
+        self.assertEqual(parse_qs(update_url_query(
             'http://example.com/path', {'fields': 'id,formats,subtitles'})),
-            query_dict('http://example.com/path?fields=id,formats,subtitles'))
-        self.assertEqual(query_dict(update_url_query(
+            parse_qs('http://example.com/path?fields=id,formats,subtitles'))
+        self.assertEqual(parse_qs(update_url_query(
             'http://example.com/path', {'fields': ('id,formats,subtitles', 'thumbnails')})),
-            query_dict('http://example.com/path?fields=id,formats,subtitles&fields=thumbnails'))
-        self.assertEqual(query_dict(update_url_query(
+            parse_qs('http://example.com/path?fields=id,formats,subtitles&fields=thumbnails'))
+        self.assertEqual(parse_qs(update_url_query(
             'http://example.com/path?manifest=f4m', {'manifest': []})),
-            query_dict('http://example.com/path'))
-        self.assertEqual(query_dict(update_url_query(
+            parse_qs('http://example.com/path'))
+        self.assertEqual(parse_qs(update_url_query(
             'http://example.com/path?system=LINUX&system=WINDOWS', {'system': 'LINUX'})),
-            query_dict('http://example.com/path?system=LINUX'))
-        self.assertEqual(query_dict(update_url_query(
+            parse_qs('http://example.com/path?system=LINUX'))
+        self.assertEqual(parse_qs(update_url_query(
             'http://example.com/path', {'fields': b'id,formats,subtitles'})),
-            query_dict('http://example.com/path?fields=id,formats,subtitles'))
-        self.assertEqual(query_dict(update_url_query(
+            parse_qs('http://example.com/path?fields=id,formats,subtitles'))
+        self.assertEqual(parse_qs(update_url_query(
             'http://example.com/path', {'width': 1080, 'height': 720})),
-            query_dict('http://example.com/path?width=1080&height=720'))
-        self.assertEqual(query_dict(update_url_query(
+            parse_qs('http://example.com/path?width=1080&height=720'))
+        self.assertEqual(parse_qs(update_url_query(
             'http://example.com/path', {'bitrate': 5020.43})),
-            query_dict('http://example.com/path?bitrate=5020.43'))
-        self.assertEqual(query_dict(update_url_query(
+            parse_qs('http://example.com/path?bitrate=5020.43'))
+        self.assertEqual(parse_qs(update_url_query(
             'http://example.com/path', {'test': '第二行тест'})),
-            query_dict('http://example.com/path?test=%E7%AC%AC%E4%BA%8C%E8%A1%8C%D1%82%D0%B5%D1%81%D1%82'))
+            parse_qs('http://example.com/path?test=%E7%AC%AC%E4%BA%8C%E8%A1%8C%D1%82%D0%B5%D1%81%D1%82'))
 
     def test_multipart_encode(self):
         self.assertEqual(
diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py
index fdf41b025..443d2609c 100644
--- a/youtube_dl/utils.py
+++ b/youtube_dl/utils.py
@@ -4248,6 +4248,7 @@ def update_url(url, **kwargs):
        url: compat_str or parsed URL tuple
        if query_update is in kwargs, update query with
        its value instead of replacing (overrides any `query`)
+       NB: query_update expects parse_qs() format: [key: value_list, ...]
        returns: compat_str
     """
     if not kwargs:
@@ -4257,7 +4258,7 @@ def update_url(url, **kwargs):
     query = kwargs.pop('query_update', None)
     if query:
         qs = compat_parse_qs(url.query)
-        qs.update((k, [v]) for k, v in query.items())
+        qs.update(query)
         kwargs['query'] = compat_urllib_parse_urlencode(qs, True)
         kwargs = compat_kwargs(kwargs)
     return compat_urllib_parse.urlunparse(url._replace(**kwargs))