diff --git a/test/test_misc.py b/test/test_misc.py
index e3cd7e2..3d364af 100644
--- a/test/test_misc.py
+++ b/test/test_misc.py
@@ -5,6 +5,20 @@ from app.models.endpoint import Endpoint
 from app.utils.session import generate_user_key, valid_user_session
 
 
+JAPAN_PREFS = 'uG-gGIJwHdqxl6DrS3mnu_511HlQcRpxYlG03Xs-' \
+   + '_znXNiJWI9nLOkRLkiiFwIpeUYMTGfUF5-t9fP5DGmzDLEt04DCx703j3nPf' \
+   + '29v_RWkU7gXw_44m2oAFIaKGmYlu4Z0bKyu9k5WXfL9Dy6YKKnpcR5CiaFsG' \
+   + 'rccNRkAPYm-eYGAFUV8M59f8StsGd_M-gHKGS9fLok7EhwBWjHxBJ2Kv8hsT' \
+   + '87zftP2gMJOevTdNnezw2Y5WOx-ZotgeheCW1BYCFcRqatlov21PHp22NGVG' \
+   + '8ZuBNAFW0bE99WSdyT7dUIvzeWCLJpbdSsq-3FUUZkxbRdFYlGd8vY1UgVAp' \
+   + 'OSie2uAmpgLFXygO-VfNBBZ68Q7gAap2QtzHCiKD5cFYwH3LPgVJ-DoZvJ6k' \
+   + 'alt34TaYiJphgiqFKV4SCeVmLWTkr0SF3xakSR78yYJU_d41D2ng-TojA9XZ' \
+   + 'uR2ZqjSvPKOWvjimu89YhFOgJxG1Po8Henj5h9OL9VXXvdvlJwBSAKw1E3FV' \
+   + '7UHWiglMxPblfxqou1cYckMYkFeIMCD2SBtju68mBiQh2k328XRPTsQ_ocby' \
+   + 'cgVKnleGperqbD6crRk3Z9xE5sVCjujn9JNVI-7mqOITMZ0kntq9uJ3R5n25' \
+   + 'Vec0TJ0P19nEtvjY0nJIrIjtnBg=='
+
+
 def test_generate_user_keys():
     key = generate_user_key()
     assert Fernet(key)
@@ -49,3 +63,16 @@ def test_query_decryption(client):
 
     with client.session_transaction() as session:
         assert valid_user_session(session)
+
+
+def test_prefs_url(client):
+    base_url = f'/{Endpoint.search}?q=wikipedia'
+    rv = client.get(base_url)
+    assert rv._status_code == 200
+    assert b'wikipedia.org' in rv.data
+    assert b'ja.wikipedia.org' not in rv.data
+
+    rv = client.get(f'{base_url}&preferences={JAPAN_PREFS}')
+    assert rv._status_code == 200
+    assert b'ja.wikipedia.org' in rv.data
+