[nijie] fix image URLs of multi-image posts (#4876)

test/results/horne.py

@@ -13,6 +13,10 @@ __tests__ = (
     "#url"     : "https://horne.red/members.php?id=58000",
     "#category": ("Nijie", "horne", "user"),
     "#class"   : nijie.NijieUserExtractor,
+    "#urls"    : (
+        "https://horne.red/members_illust.php?id=58000",
+        "https://horne.red/members_dojin.php?id=58000",
+    ),
 },
 
 {
@@ -71,11 +75,41 @@ __tests__ = (
     "#class"   : nijie.NijieFollowedExtractor,
 },
 
+{
+    "#url"     : "https://horne.red/view.php?id=8708",
+    "#category": ("Nijie", "horne", "image"),
+    "#class"   : nijie.NijieImageExtractor,
+    "#urls"    : "https://pic.nijie.net/07/horne/18/00/58000/illust/0_0_c8f715a8f3d53943_db6231.png",
+
+    "artist_id"  : 58000,
+    "artist_name": "のえるわ",
+    "date"       : "dt:2018-01-29 14:25:39",
+    "description": "前回とシチュがまるかぶり　\r\n竿野郎は塗るのだるかった",
+    "extension"  : "png",
+    "filename"   : "0_0_c8f715a8f3d53943_db6231",
+    "image_id"   : 8708,
+    "num"        : 0,
+    "tags"       : [
+        "男の娘",
+        "オリキャラ",
+        "うちのこ",
+    ],
+    "title"      : "うちのこえっち",
+    "url"        : "https://pic.nijie.net/07/horne/18/00/58000/illust/0_0_c8f715a8f3d53943_db6231.png",
+    "user_id"    : 58000,
+    "user_name"  : "のえるわ",
+},
+
 {
     "#url"     : "https://horne.red/view.php?id=8716",
     "#category": ("Nijie", "horne", "image"),
     "#class"   : nijie.NijieImageExtractor,
-    "#count"   : 4,
+    "#urls"    : (
+        "https://pic.nijie.net/07/horne/18/00/58000/illust/0_0_b4ffb4b6f7ec6d51_1a32c0.png",
+        "https://pic.nijie.net/07/horne/18/00/58000/illust/8716_0_2690972a4f6270bb_85ed8f.png",
+        "https://pic.nijie.net/07/horne/18/00/58000/illust/8716_1_09348508d8b76f36_f6cf47.png",
+        "https://pic.nijie.net/08/horne/18/00/58000/illust/8716_2_5151d956d3789277_d76e75.png",
+    ),
 
     "artist_id"  : 58000,
     "artist_name": "のえるわ",