sqlite: don't forget to reset _ids on close

src/sqltrie/sqlite/sqlite.py

@@ -120,6 +120,8 @@ def open(cls, path):
         return trie
 
     def close(self):
+        self._ids = {}
+
         conn = getattr(self._local, "conn", None)
         if conn is None:
             return

tests/test_sqltrie.py

@@ -137,7 +137,12 @@ def test_open(tmp_path):
     trie[("foo", "bar", "baz")] = b"baz-value"
 
     trie.commit()
+
+    assert trie._ids == {(): 1, ("foo",): 2, ("foo", "bar"): 3}
+    assert trie._local.conn
     trie.close()
+    assert not trie._ids
+    assert not hasattr(trie._local, "conn")
 
     trie = SQLiteTrie.open(path)
 
@@ -146,6 +151,12 @@ def test_open(tmp_path):
     assert trie[("foo",)] == b"foo-value"
     assert trie[("foo", "bar", "baz")] == b"baz-value"
 
+    assert not trie._ids
+    assert trie._local.conn
+    trie.close()
+    assert not trie._ids
+    assert not hasattr(trie._local, "conn")
+
 
 @pytest.mark.parametrize("cls", [SQLiteTrie, PyGTrie])
 def test_view(cls):