origin commit

tests/utils_test.py

@@ -0,0 +1,36 @@
+import unittest
+
+from breach.utils import RingDictionary
+
+
+class UtilsTest(unittest.TestCase):
+
+    def test_ring_dictionary_1(self):
+        rd = RingDictionary(max_num_keys=3)
+        rd['a'] = 2
+        self.assertListEqual(sorted(rd.keys()), ['a'])
+        self.assertListEqual(sorted(rd.k), ['a'])
+        rd['b'] = 2
+        self.assertListEqual(sorted(rd.keys()), ['a', 'b'])
+        self.assertListEqual(sorted(rd.k), ['a', 'b'])
+        rd['c'] = 2
+        self.assertListEqual(sorted(rd.keys()), ['a', 'b', 'c'])
+        self.assertListEqual(sorted(rd.k), ['a', 'b', 'c'])
+        rd['d'] = 2
+        self.assertListEqual(sorted(rd.keys()), ['b', 'c', 'd'])
+        self.assertListEqual(sorted(rd.k), ['b', 'c', 'd'])
+
+        rd = RingDictionary(max_num_keys=1)
+        rd['c'] = 1
+        rd['c'] = 2
+        rd['c'] = 3
+        self.assertListEqual(sorted(rd.keys()), ['c'])
+        self.assertListEqual(sorted(rd.k), ['c'])
+
+        rd['d'] = 3
+        self.assertListEqual(sorted(rd.keys()), ['d'])
+        self.assertListEqual(sorted(rd.k), ['d'])
+
+
+if __name__ == '__main__':
+    unittest.main()