diff --git a/azure-functions-extension-blob/tests/test_blobclient.py b/azure-functions-extension-blob/tests/test_blobclient.py
index c8c23af..0bc6964 100644
--- a/azure-functions-extension-blob/tests/test_blobclient.py
+++ b/azure-functions-extension-blob/tests/test_blobclient.py
@@ -78,6 +78,12 @@ def test_input_none(self):
         )
         self.assertIsNone(result)
 
+        datum: Datum = Datum(value=b"string_content", type=None)
+        result = BlobClientConverter.decode(
+            data=datum, trigger_metadata=None, pytype=BlobClient
+        )
+        self.assertIsNone(result)
+
     def test_input_incorrect_type(self):
         datum: Datum = Datum(value=b"string_content", type="bytearray")
         with self.assertRaises(ValueError):
@@ -119,6 +125,27 @@ def test_input_populated(self):
         self.assertIsNotNone(sdk_result)
         self.assertIsInstance(sdk_result, BlobClientSdk)
 
+    def test_input_invalid_pytype(self):
+        content = {
+            "Connection": "AzureWebJobsStorage",
+            "ContainerName": "test-blob",
+            "BlobName": "text.txt",
+        }
+
+        sample_mbd = MockMBD(
+            version="1.0",
+            source="AzureStorageBlobs",
+            content_type="application/json",
+            content=json.dumps(content),
+        )
+
+        datum: Datum = Datum(value=sample_mbd, type="model_binding_data")
+        result: BlobClient = BlobClientConverter.decode(
+            data=datum, trigger_metadata=None, pytype="str"
+        )
+
+        self.assertIsNone(result)
+
     def test_blob_client_invalid_creation(self):
         # Create test binding
         mock_blob = MockBinding(
diff --git a/azure-functions-extension-blob/tests/test_containerclient.py b/azure-functions-extension-blob/tests/test_containerclient.py
index d95d211..39cabfa 100644
--- a/azure-functions-extension-blob/tests/test_containerclient.py
+++ b/azure-functions-extension-blob/tests/test_containerclient.py
@@ -78,6 +78,12 @@ def test_input_none(self):
         )
         self.assertIsNone(result)
 
+        datum: Datum = Datum(value=b"string_content", type=None)
+        result = BlobClientConverter.decode(
+            data=datum, trigger_metadata=None, pytype=ContainerClient
+        )
+        self.assertIsNone(result)
+
     def test_input_incorrect_type(self):
         datum: Datum = Datum(value=b"string_content", type="bytearray")
         with self.assertRaises(ValueError):
@@ -117,6 +123,27 @@ def test_input_populated(self):
         self.assertIsNotNone(sdk_result)
         self.assertIsInstance(sdk_result, ContainerClientSdk)
 
+    def test_input_invalid_pytype(self):
+        content = {
+            "Connection": "AzureWebJobsStorage",
+            "ContainerName": "test-blob",
+            "BlobName": "text.txt",
+        }
+
+        sample_mbd = MockMBD(
+            version="1.0",
+            source="AzureStorageBlobs",
+            content_type="application/json",
+            content=json.dumps(content),
+        )
+
+        datum: Datum = Datum(value=sample_mbd, type="model_binding_data")
+        result: ContainerClient = BlobClientConverter.decode(
+            data=datum, trigger_metadata=None, pytype="str"
+        )
+
+        self.assertIsNone(result)
+
     def test_container_client_invalid_creation(self):
         # Create test binding
         mock_blob = MockBinding(
diff --git a/azure-functions-extension-blob/tests/test_ssd.py b/azure-functions-extension-blob/tests/test_ssd.py
index a57859f..59cc06f 100644
--- a/azure-functions-extension-blob/tests/test_ssd.py
+++ b/azure-functions-extension-blob/tests/test_ssd.py
@@ -78,6 +78,12 @@ def test_input_none(self):
         )
         self.assertIsNone(result)
 
+        datum: Datum = Datum(value=b"string_content", type=None)
+        result = BlobClientConverter.decode(
+            data=datum, trigger_metadata=None, pytype=StorageStreamDownloader
+        )
+        self.assertIsNone(result)
+
     def test_input_incorrect_type(self):
         datum: Datum = Datum(value=b"string_content", type="bytearray")
         with self.assertRaises(ValueError):
@@ -119,6 +125,27 @@ def test_input_populated(self):
         self.assertIsNotNone(sdk_result)
         self.assertIsInstance(sdk_result, SSDSdk)
 
+    def test_input_invalid_pytype(self):
+        content = {
+            "Connection": "AzureWebJobsStorage",
+            "ContainerName": "test-blob",
+            "BlobName": "text.txt",
+        }
+
+        sample_mbd = MockMBD(
+            version="1.0",
+            source="AzureStorageBlobs",
+            content_type="application/json",
+            content=json.dumps(content),
+        )
+
+        datum: Datum = Datum(value=sample_mbd, type="model_binding_data")
+        result: StorageStreamDownloader = BlobClientConverter.decode(
+            data=datum, trigger_metadata=None, pytype="str"
+        )
+
+        self.assertIsNone(result)
+
     def test_ssd_invalid_creation(self):
         # Create test binding
         mock_blob = MockBinding(