[4chan] update test

gallery_dl/extractor/4chan.py

@@ -18,7 +18,7 @@ class FourchanThreadExtractor(chan.ChanThreadExtractor):
     test = [("https://boards.4chan.org/tg/thread/15396072/", {
         "url": "39082ad166161966d7ba8e37f2173a824eb540f0",
         "keyword": "7ae2f4049adf0d2f835eb91b6b26b7f4ec882e0a",
-        "content": "3081ed85a5afaeb3f430f42540e7bb5eec1908cc",
+        "content": "20b7b51afa51c9c31a0020a0737b889532c8d7ec",
     })]
     api_url = "https://a.4cdn.org/{board}/thread/{thread}.json"
     file_url = "https://i.4cdn.org/{board}/{tim}{ext}"

test/test_extractors.py

@@ -48,7 +48,7 @@ def _generate_test(extr, tcase):
 
 
 # enable selective testing for direct calls
-skip = ["4chan", "exhentai", "kissmanga", "mangafox"]
+skip = ["exhentai", "kissmanga", "mangafox"]
 if __name__ == '__main__' and len(sys.argv) > 1:
     extractors = [
         extr for extr in extractor.extractors()