fixes

src/mappingtools.py

@@ -4,7 +4,7 @@
 from collections.abc import Callable, Generator, Iterable, Mapping
 from enum import Enum, auto
 from itertools import chain
-from typing import Any, NamedTuple, TypeVar
+from typing import Any, TypeVar
 
 K = TypeVar('K')
 KT = TypeVar('KT')

tests/test_mapping_collector.py

@@ -79,7 +79,6 @@ def test_adding_key_value_pairs_in_first_mode():
 
 # Initialization with invalid mode
 def test_initialization_with_invalid_mode():
-    from mappingtools import MappingCollector
     # Arrange & Act & Assert
     with pytest.raises(ValueError):
         MappingCollector("INVALID_MODE")

tests/test_stream_dict_records.py

@@ -159,4 +159,4 @@ def test_large_dictionaries_performance():
 
     # Act & Assert (no assertion needed for performance, just ensure it runs)
     for _ in stream_dict_records(input_dict):
-        pass
+        assert _ is not None