diff --git a/tests/data_service/test_data_service_observer.py b/tests/data_service/test_data_service_observer.py
new file mode 100644
index 0000000..a15e97d
--- /dev/null
+++ b/tests/data_service/test_data_service_observer.py
@@ -0,0 +1,76 @@
+import logging
+
+import pydase
+from pydase.data_service.data_service_observer import DataServiceObserver
+from pydase.data_service.state_manager import StateManager
+
+logger = logging.getLogger()
+
+
+def test_static_property_dependencies() -> None:
+    class SubClass(pydase.DataService):
+        _name = "SubClass"
+
+        @property
+        def name(self) -> str:
+            return self._name
+
+        @name.setter
+        def name(self, value: str) -> None:
+            self._name = value
+
+    class ServiceClass(pydase.DataService):
+        def __init__(self) -> None:
+            super().__init__()
+            self.list_attr = [SubClass()]
+            self._name = "ServiceClass"
+
+        @property
+        def name(self) -> str:
+            return self._name
+
+        @name.setter
+        def name(self, value: str) -> None:
+            self._name = value
+
+    service_instance = ServiceClass()
+    state_manager = StateManager(service_instance)
+    observer = DataServiceObserver(state_manager)
+    logger.debug(observer.property_deps_dict)
+    assert observer.property_deps_dict == {
+        "list_attr[0]._name": ["list_attr[0].name"],
+        "_name": ["name"],
+    }
+
+
+def test_dynamic_list_property_dependencies() -> None:
+    class SubClass(pydase.DataService):
+        _name = "SubClass"
+
+        @property
+        def name(self) -> str:
+            return self._name
+
+        @name.setter
+        def name(self, value: str) -> None:
+            self._name = value
+
+    class ServiceClass(pydase.DataService):
+        def __init__(self) -> None:
+            super().__init__()
+            self.list_attr = [SubClass()]
+
+    service_instance = ServiceClass()
+    state_manager = StateManager(service_instance)
+    observer = DataServiceObserver(state_manager)
+
+    assert observer.property_deps_dict == {
+        "list_attr[0]._name": ["list_attr[0].name"],
+    }
+
+    service_instance.list_attr.append(SubClass())
+
+    assert observer.property_deps_dict == {
+        "list_attr[0]._name": ["list_attr[0].name"],
+        "list_attr[1]._name": ["list_attr[1].name"],
+    }