fix: Fix mercury extractor test

tests/mock_server/server.py

@@ -10,6 +10,12 @@ def index():
 
 @route("/static/<filename>")
 def static_path(filename):
+    template_path = abspath(getcwd()) / Path("tests/mock_server/templates")
+    response = static_file(filename, root=template_path)
+    return response
+
+@route("/static_no_content_type/<filename>")
+def static_no_content_type(filename):
     template_path = abspath(getcwd()) / Path("tests/mock_server/templates")
     response = static_file(filename, root=template_path)
     response.set_header("Content-Type", "")

tests/test_util.py

@@ -5,6 +5,6 @@ def test_download_url_downloads_content():
     assert "Example Domain" in text
 
 def test_download_url_gets_encoding_from_body():
-    text = util.download_url("http://127.0.0.1:8080/static/shift_jis.html")
+    text = util.download_url("http://127.0.0.1:8080/static_no_content_type/shift_jis.html")
     assert "鹿児島のニュース｜MBC南日本放送" in text
     assert "掲載された全ての記事・画像等の無断転載、二次利用をお断りいたします" in text