[cleanup] Misc

Closes #4710, Closes #4754, Closes #4723
Authored by: pukkandan, MrRawes, DavidH-2022

test/test_YoutubeDL.py

@@ -668,7 +668,7 @@ def test_add_extra_info(self):
     def test_prepare_outtmpl_and_filename(self):
         def test(tmpl, expected, *, info=None, **params):
             params['outtmpl'] = tmpl
-            ydl = YoutubeDL(params)
+            ydl = FakeYDL(params)
             ydl._num_downloads = 1
             self.assertEqual(ydl.validate_outtmpl(tmpl), None)
 

test/test_jsinterp.py

@@ -387,7 +387,7 @@ def test_regex(self):
         ''')
         self.assertEqual(jsi.call_function('x').flags & re.I, re.I)
 
-        jsi = JSInterpreter('''
+        jsi = JSInterpreter(R'''
         function x() { let a=/,][}",],()}(\[)/; return a; }
         ''')
         self.assertEqual(jsi.call_function('x').pattern, r',][}",],()}(\[)')