Update test_remove_1-5.py

Author: ananthsub

tests/deprecated_api/test_remove_1-5.py

@@ -18,6 +18,7 @@
 import pytest
 
 from pytorch_lightning import Callback, Trainer
+from pytorch_lightning.callbacks import ModelCheckpoint
 from pytorch_lightning.loggers import WandbLogger
 from tests.helpers import BoringModel
 from tests.helpers.utils import no_warning_call
@@ -68,3 +69,9 @@ def on_save_checkpoint(self, *args):
     trainer.callbacks = [NewSignature(), ValidSignature1(), ValidSignature2()]
     with no_warning_call(DeprecationWarning):
         trainer.save_checkpoint(filepath)
+
+def test_v1_5_0_model_checkpoint_period(tmpdir):
+    with no_warning_call(DeprecationWarning):
+        ModelCheckpoint(dirpath=tmpdir)
+    with pytest.deprecated_call(match="is deprecated in v1.3 and will be removed in v1.5"):
+        ModelCheckpoint(dirpath=tmpdir, period=1)