Add simple test for invalidation

tests/util/test_dict_cache.py

@@ -20,7 +20,7 @@
 
 class DictCacheTestCase(unittest.TestCase):
  def setUp(self):
- self.cache = DictionaryCache("foobar")
+ self.cache = DictionaryCache("foobar", max_entries=10)
 
  def test_simple_cache_hit_full(self):
  key = "test_simple_cache_hit_full"
@@ -91,3 +91,26 @@ def test_multi_insert(self):
  c.value,
  )
  self.assertEqual(c.full, False)
+
+ def test_invalidation(self):
+ """Test that the partial dict and full dicts get invalidated
+ separately.
+ """
+ key = "some_key"
+
+ seq = self.cache.sequence
+ self.cache.update(seq, key, {"a": "b", "c": "d"})
+
+ for i in range(20):
+ self.cache.get(key, ["a"])
+ self.cache.update(seq, f"key{i}", {1: 2})
+
+ # We should have evicted the full dict...
+ r = self.cache.get(key)
+ self.assertFalse(r.full)
+ self.assertTrue("c" not in r.value)
+
+ # ... but kept the "a" entry that we kept querying.
+ r = self.cache.get(key, dict_keys=["a"])
+ self.assertFalse(r.full)
+ self.assertEqual(r.value, {"a": "b"})