[tests] fix 'invalid escape sequence' warnings

test/results/4plebs.py

@@ -12,7 +12,7 @@ __tests__ = (
     "#url"     : "https://archive.4plebs.org/tg/thread/54059290",
     "#category": ("foolfuuka", "4plebs", "thread"),
     "#class"   : foolfuuka.FoolfuukaThreadExtractor,
-    "#pattern" : "https://i\.4pcdn\.org/tg/1[34]\d{11}\.(jpg|png|gif)",
+    "#pattern" : r"https://i\.4pcdn\.org/tg/1[34]\d{11}\.(jpg|png|gif)",
     "#count"   : 30,
 },
 

test/results/imgbb.py

@@ -21,7 +21,7 @@ __tests__ = (
     "album_id"   : "i5PggF",
     "album_name" : "British Scrap Book",
     "extension"  : "jpg",
-    "id"         : "re:^\w{7}$",
+    "id"         : r"re:^\w{7}$",
     "title"      : str,
     "url"        : r"re:https://i\.ibb\.co/\w{7}/[\w-]+\.jpg",
     "user"       : "folkie",

test/results/paheal.py

@@ -12,7 +12,7 @@ __tests__ = (
     "#url"     : "https://rule34.paheal.net/post/list/Ayane_Suzuki/1",
     "#category": ("shimmie2", "paheal", "tag"),
     "#class"   : paheal.PahealTagExtractor,
-    "#pattern" : "https://[^.]+\.paheal\.net/_images/\w+/\d+%20-%20|https://r34i\.paheal-cdn\.net/[0-9a-f]{2}/[0-9a-f]{2}/[0-9a-f]{32}$",
+    "#pattern" : r"https://[^.]+\.paheal\.net/_images/\w+/\d+%20-%20|https://r34i\.paheal-cdn\.net/[0-9a-f]{2}/[0-9a-f]{2}/[0-9a-f]{32}$",
     "#count"   : range(70, 200),
 
     "date"     : "type:datetime",

test/results/raddle.py

@@ -21,7 +21,7 @@ __tests__ = (
     "#category": ("postmill", "raddle.me", "forum"),
     "#class"   : postmill.PostmillForumExtractor,
     "#count"   : 1,
-    "#pattern" : "^https://raddle\.me/f/traa/156646/click-here-to-go-to-f-traaaaaaannnnnnnnnns$",
+    "#pattern" : r"^https://raddle\.me/f/traa/156646/click-here-to-go-to-f-traaaaaaannnnnnnnnns$",
 },
 
 {
@@ -97,7 +97,7 @@ __tests__ = (
     "#comment" : "Link + text post (with text disabled)",
     "#category": ("postmill", "raddle.me", "post"),
     "#class"   : postmill.PostmillPostExtractor,
-    "#pattern" : "^https://fantasyanime\.com/anime/neo-tokyo-dub$",
+    "#pattern" : r"^https://fantasyanime\.com/anime/neo-tokyo-dub$",
     "#count"   : 1,
 },
 

test/results/wikiart.py

@@ -12,7 +12,7 @@ __tests__ = (
     "#url"     : "https://www.wikiart.org/en/thomas-cole",
     "#category": ("", "wikiart", "artist"),
     "#class"   : wikiart.WikiartArtistExtractor,
-    "#pattern" : "https://uploads\d+\.wikiart\.org/(\d+/)?images/thomas-cole/[\w()-]+\.(jpg|png)",
+    "#pattern" : r"https://uploads\d+\.wikiart\.org/(\d+/)?images/thomas-cole/[\w()-]+\.(jpg|png)",
     "#count"   : "> 100",
 
     "albums"     : None,