add docstring to test

tests/loops/test_loops.py

@@ -101,6 +101,11 @@ def test_connect_subloops(tmpdir):
     assert new_batch_loop.trainer is trainer
 
 
+def test_loop_restarting(tmpdir):
+    # TODO:
+    pass
+
+
 class CustomException(Exception):
     pass
 
@@ -649,6 +654,8 @@ def configure_optimizers_multiple(self):
 
 @mock.patch.dict(os.environ, {"PL_FAULT_TOLERANT_TRAINING": "1"})
 def test_fit_loop_reset(tmpdir):
+    """Test that the reset logic in fit- and epoch loop is aware of whether the loop is restarting from a
+    completed loop or from a mid-epoch checkpoint."""
 
     # generate checkpoints at end of epoch and mid-epoch
     model = BoringModel()