[imagetwist:gallery] support multiple pages (#8826)

test/results/imagetwist.py

@@ -14,8 +14,12 @@ __tests__ = (
     "#category": ("imagehost", "imagetwist", "image"),
     "#class"   : imagehosts.ImagetwistImageExtractor,
     "#sha1_url"     : "8d5e168c0bee30211f821c6f3b2116e419d42671",
-    "#sha1_metadata": "d1060a4c2e3b73b83044e20681712c0ffdd6cfef",
     "#sha1_content" : "0c8768055e4e20e7c7259608b67799171b691140",
+
+    "filename" : "test",
+    "extension": "png",
+    "token"    : "f1i2s4vhvbrq",
+    "post_url" : "https://imagetwist.com/f1i2s4vhvbrq",
 },
 
 {
@@ -62,4 +66,13 @@ __tests__ = (
     ),
 },
 
+{
+    "#url"     : "https://imagetwist.com/p/gdldev/806105/multi",
+    "#comment" : "multiple pages (#8826)",
+    "#category": ("imagehost", "imagetwist", "gallery"),
+    "#class"   : imagehosts.ImagetwistGalleryExtractor,
+    "#pattern" : imagehosts.ImagetwistImageExtractor.pattern,
+    "#count"   : 100,
+},
+
 )