fix: add tests

Author: zhiyuan1i

tests/tests_fabric/test_connector.py

@@ -178,6 +178,10 @@ def parse_devices(devices):
         @staticmethod
         def get_parallel_devices(devices):
             return [torch.device("cpu")] * devices
+        
+        @staticmethod
+        def get_device() -> str:
+            return "cpu"
 
         @staticmethod
         def auto_device_count() -> int:

tests/tests_pytorch/trainer/connectors/test_accelerator_connector.py

@@ -191,6 +191,10 @@ def parse_devices(devices):
         @staticmethod
         def get_parallel_devices(devices):
             return [torch.device("cpu")] * devices
+        
+        @staticmethod
+        def get_device() -> str:
+            return "cpu"
 
         @staticmethod
         def auto_device_count() -> int: