diff --git a/tests/unit/connector/test_dummy_input.py b/tests/unit/connector/test_dummy_input.py
index 6196d4a4d..85973e656 100644
--- a/tests/unit/connector/test_dummy_input.py
+++ b/tests/unit/connector/test_dummy_input.py
@@ -24,13 +24,17 @@ def test_fails_with_disconnected_error_if_input_was_empty(self):
             self.object.get_next(self.timeout)
 
     def test_returns_documents_in_order_provided(self):
-        self.object._config.documents = [{"order": 0}, {"order": 1}, {"order": 2}]
+        config = copy.deepcopy(self.CONFIG)
+        config["documents"] = [{"order": 0}, {"order": 1}, {"order": 2}]
+        self.object = Factory.create({"Test Instance Name": config})
         for order in range(0, 3):
             event, _ = self.object.get_next(self.timeout)
             assert event.get("order") == order
 
     def test_raises_exceptions_instead_of_returning_them_in_document(self):
-        self.object._config.documents = [{"order": 0}, DummyError, {"order": 1}]
+        config = copy.deepcopy(self.CONFIG)
+        config["documents"] = [{"order": 0}, DummyError, {"order": 1}]
+        self.object = Factory.create({"Test Instance Name": config})
         event, _ = self.object.get_next(self.timeout)
         assert event.get("order") == 0
         with raises(DummyError):
@@ -39,15 +43,17 @@ def test_raises_exceptions_instead_of_returning_them_in_document(self):
         assert event.get("order") == 1
 
     def test_raises_exceptions_instead_of_returning_them(self):
-        self.object._config.documents = [BaseException]
+        config = copy.deepcopy(self.CONFIG)
+        config["documents"] = [BaseException]
+        self.object = Factory.create({"Test Instance Name": config})
         with raises(BaseException):
             self.object.get_next(self.timeout)
 
     def test_repeat_documents_repeats_documents(self):
         config = copy.deepcopy(self.CONFIG)
         config["repeat_documents"] = True
+        config["documents"] = [{"order": 0}, {"order": 1}, {"order": 2}]
         connector = Factory.create(configuration={"Test Instance Name": config})
-        connector._config.documents = [{"order": 0}, {"order": 1}, {"order": 2}]
 
         for order in range(0, 9):
             event, _ = connector.get_next(self.timeout)