Add tests for LogFilter

qutebrowser/test/utils/test_log.py

@@ -0,0 +1,83 @@
+# Copyright 2014 Florian Bruhin (The Compiler) <mail@qutebrowser.org>
+#
+# This file is part of qutebrowser.
+#
+# qutebrowser is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# qutebrowser is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with qutebrowser.  If not, see <http://www.gnu.org/licenses/>.
+
+"""Tests for qutebrowser.utils.log."""
+
+import logging
+import unittest
+from unittest import TestCase
+
+import qutebrowser.utils.log as log
+
+
+class LogFilterTests(TestCase):
+
+    """Tests for LogFilter.
+
+    Attributes:
+        logger: The logger we use to create records.
+    """
+
+    def setUp(self):
+        self.logger = logging.getLogger("foo")
+
+    def _make_record(self, name):
+        """Create a bogus logging record with the supplied logger name."""
+        return self.logger.makeRecord(name, level=logging.DEBUG, fn=None,
+                                      lno=0, msg="", args=None, exc_info=None)
+
+    def test_empty(self):
+        """Test if an empty filter lets all messages through."""
+        logfilter = log.LogFilter(None)
+        record = self._make_record("eggs.bacon.spam")
+        self.assertTrue(logfilter.filter(record))
+        record = self._make_record("eggs")
+        self.assertTrue(logfilter.filter(record))
+
+    def test_matching(self):
+        """Test if a filter lets an exactly matching logrecord through."""
+        logfilter = log.LogFilter(["eggs", "bacon"])
+        record = self._make_record("eggs")
+        self.assertTrue(logfilter.filter(record))
+        record = self._make_record("bacon")
+        self.assertTrue(logfilter.filter(record))
+        record = self._make_record("spam")
+        self.assertFalse(logfilter.filter(record))
+        logfilter = log.LogFilter(["eggs.bacon"])
+        record = self._make_record("eggs.bacon")
+        self.assertTrue(logfilter.filter(record))
+
+    def test_equal_start(self):
+        """Test if a filter blocks a logger which looks equal but isn't."""
+        logfilter = log.LogFilter(["eggs"])
+        record = self._make_record("eggsauce")
+        self.assertFalse(logfilter.filter(record))
+        logfilter = log.LogFilter("eggs.bacon")
+        record = self._make_record("eggs.baconstrips")
+        self.assertFalse(logfilter.filter(record))
+
+    def test_child(self):
+        """Test if a filter lets through a logger which is a child."""
+        logfilter = log.LogFilter(["eggs.bacon", "spam.ham"])
+        record = self._make_record("eggs.bacon.spam")
+        self.assertTrue(logfilter.filter(record))
+        record = self._make_record("spam.ham.salami")
+        self.assertTrue(logfilter.filter(record))
+
+
+if __name__ == '__main__':
+    unittest.main()