ISSUE-1503: Add DictWrapper Mapping abc tests

Author: Tankanow

tests/__init__.py

@@ -101,6 +101,19 @@ def message(self) -> str:
     assert DataClassSample(data1).raw_event is data1
 
 
+def test_dict_wrapper_imlements_mapping():
+    class DataClassSample(DictWrapper):
+        pass
+
+    data = {"message": "foo1"}
+    dcs = DataClassSample(data)
+    assert len(dcs) == len(data)
+    assert list(dcs) == list(data)
+    assert dcs.keys() == data.keys()
+    assert list(dcs.values()) == list(data.values())
+    assert dcs.items() == data.items()
+
+
 def test_cloud_watch_dashboard_event():
     event = CloudWatchDashboardCustomWidgetEvent(load_event("cloudWatchDashboardEvent.json"))
     assert event.describe is False