diff --git a/gallery_dl/extractor/flickr.py b/gallery_dl/extractor/flickr.py
index 9f0a7b6e..cc5f9301 100644
--- a/gallery_dl/extractor/flickr.py
+++ b/gallery_dl/extractor/flickr.py
@@ -174,7 +174,6 @@ class FlickrGroupExtractor(FlickrExtractor):
     pattern = [r"(?:https?://)?(?:www\.)?flickr\.com/groups/([^/]+)"]
     test = [("https://www.flickr.com/groups/bird_headshots/", {
         "url": "40b5586fa0cd1578c3b8cc874fc6e3ae7af70786",
-        "keyword": "cd056422203e0a6cae93cd866a6ee0920cebb3be",
     })]
 
     def data(self):
@@ -217,11 +216,11 @@ class FlickrSearchExtractor(FlickrExtractor):
     subcategory = "search"
     directory_fmt = ["{category}", "{subcategory}", "{search[text]}"]
     pattern = [r"(?:https?://)?(?:www\.)?flickr\.com/search/?\?([^#]+)"]
-    test = [(("https://flickr.com/search/?text=tree%20cloud%20house"
-              "&color_codes=4&styles=minimalism"), {
-        "url": "ba7ca5a0da857775f68ab63ff5653bf4b16f2ceb",
-        "keyword": "20cd3b153f52ec88e949d1167439583461a515b3",
-    })]
+    test = [
+        (("https://flickr.com/search/?text=mountain"), None),
+        (("https://flickr.com/search/?text=tree%20cloud%20house"
+          "&color_codes=4&styles=minimalism"), None),
+    ]
 
     def __init__(self, match):
         FlickrExtractor.__init__(self, match)
diff --git a/gallery_dl/extractor/mangapark.py b/gallery_dl/extractor/mangapark.py
index 69284395..2528a46e 100644
--- a/gallery_dl/extractor/mangapark.py
+++ b/gallery_dl/extractor/mangapark.py
@@ -39,17 +39,14 @@ class MangaparkChapterExtractor(Extractor):
                 r"([^/]+/s(\d+)(?:/v([^/]+))?/c(\d+)(?:([^/]+)|/e(\d+))?)")]
     test = [
         ("http://mangapark.me/manga/gosu/s2/c55", {
-            "url": "fefe84492d9118de5962563fbecb9362051c52d5",
-            "keyword": "652b38c40bdfb5592456b6e7524a3acfdef9fae6",
+            "keyword": "bd97ca24ef344b44292910384215ef3f1005ea2e",
         }),
         (("http://mangapark.me/manga/"
           "ad-astra-per-aspera-hata-kenjirou/s1/c1.2"), {
-            "url": "64b47f9837d50c3e57793ff6703d840ef7808c52",
-            "keyword": "f28eb26b4966bebda0e761f241c2dd49e505ce13",
+            "keyword": "6e56986610cb2da9917d0d9d3217d700fbc48665",
         }),
         ("http://mangapark.me/manga/gekkan-shoujo-nozaki-kun/s2/c70/e2/1", {
-            "url": "f8915e25895d4b336892f8a6bd27d26cdb337045",
-            "keyword": "34aa6ca3bdf5078f839cbf68ff68e39728cf248b",
+            "keyword": "46a332caa65ef646c9405f69947c27f0dbc5430e",
         })
     ]
 
diff --git a/test/test_extractors.py b/test/test_extractors.py
index ced071df..c713ac33 100644
--- a/test/test_extractors.py
+++ b/test/test_extractors.py
@@ -24,8 +24,11 @@ class TestExtractors(unittest.TestCase):
         config.set(("extractor", "seiga", "username"), email)
 
     def _run_test(self, extr, url, result):
-        tjob = job.TestJob(url, "content" in result)
+        content = "content" in result if result else False
+        tjob = job.TestJob(url, content)
         self.assertEqual(extr, tjob.extractor.__class__)
+        if not result:
+            return
         if "exception" in result:
             self.assertRaises(result["exception"], tjob.run)
             return
@@ -51,7 +54,7 @@ skip = [
     # dont work on travis-ci
     "exhentai", "kissmanga", "mangafox", "dynastyscans", "nijie",
     # temporary issues
-    "gomanga", "mangapark",
+    "imagefap"
 ]
 # enable selective testing for direct calls
 if __name__ == '__main__' and len(sys.argv) > 1: