2 files changed, 77 insertions, 0 deletions
diff --git a/src/leap/common/tests/test_check.py b/src/leap/common/tests/test_check.py
index 6ce8493..cd488ff 100644
--- a/src/leap/common/tests/test_check.py
+++ b/src/leap/common/tests/test_check.py
@@ -27,6 +27,7 @@ import mock
 
 from leap.common import check
 
+
 class CheckTests(unittest.TestCase):
     def test_raises_on_false_condition(self):
         with self.assertRaises(AssertionError):
diff --git a/src/leap/common/tests/test_memoize.py b/src/leap/common/tests/test_memoize.py
new file mode 100644
index 0000000..c923fc5
--- /dev/null
+++ b/src/leap/common/tests/test_memoize.py
@@ -0,0 +1,76 @@
+# -*- coding: utf-8 -*-
+# test_check.py
+# Copyright (C) 2013 LEAP
+#
+# This program 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.
+#
+# This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+"""
+Tests for:
+    * leap/common/decorators._memoized
+"""
+try:
+    import unittest2 as unittest
+except ImportError:
+    import unittest
+
+from time import sleep
+
+import mock
+
+from leap.common.decorators import _memoized
+
+
+class MemoizeTests(unittest.TestCase):
+
+    def test_memoized_call(self):
+        """
+        Test that a memoized function only calls once.
+        """
+        witness = mock.Mock()
+
+        @_memoized
+        def callmebaby():
+            return witness()
+
+        for i in range(10):
+            callmebaby()
+        witness.assert_called_once_with()
+
+    def test_cache_invalidation(self):
+        """
+        Test that time makes the cache invalidation expire.
+        """
+        witness = mock.Mock()
+
+        cache_with_alzheimer = _memoized
+        cache_with_alzheimer.CACHE_INVALIDATION_DELTA = 1
+
+        @cache_with_alzheimer
+        def callmebaby(*args):
+            return witness(*args)
+
+        for i in range(10):
+            callmebaby()
+        witness.assert_called_once_with()
+
+        sleep(2)
+        callmebaby("onemoretime")
+
+        expected = [mock.call(), mock.call("onemoretime")]
+        self.assertEqual(
+            witness.call_args_list,
+            expected)
+
+
+if __name__ == "__main__":
+    unittest.main()