1 files changed, 14 insertions, 0 deletions
diff --git a/tests/unit/completion/test_histcategory.py b/tests/unit/completion/test_histcategory.py
index 8fd48f429..7dfda3ea6 100644
--- a/tests/unit/completion/test_histcategory.py
+++ b/tests/unit/completion/test_histcategory.py
@@ -20,11 +20,13 @@
 """Test the web history completion category."""
 
 import datetime
+import logging
 
 import pytest
 
 from qutebrowser.misc import sql
 from qutebrowser.completion.models import histcategory
+from qutebrowser.utils import usertypes
 
 
 @pytest.fixture
@@ -133,6 +135,18 @@ def test_set_pattern_repeated(model_validator, hist):
     ])
 
 
+def test_set_pattern_long(hist, message_mock, caplog):
+    hist.insert({'url': 'example.com/foo', 'title': 'title1', 'last_atime': 1})
+    cat = histcategory.HistoryCategory()
+    with caplog.at_level(logging.ERROR):
+        # pylint: disable=bad-builtin
+        cat.set_pattern(" ".join(map(str, range(10000))))
+        # pylint: enable=bad-builtin
+    msg = message_mock.getmsg(usertypes.MessageLevel.error)
+    assert msg.text.startswith(
+        "Error building SQL Query: Expression tree is too large")
+
+
 @pytest.mark.parametrize('max_items, before, after', [
     (-1, [
         ('a', 'a', '2017-04-16'),