diff --git a/tests/test_graphql/test_api_storage.py b/tests/test_graphql/test_api_storage.py
new file mode 100644
index 00000000..a925469b
--- /dev/null
+++ b/tests/test_graphql/test_api_storage.py
@@ -0,0 +1,48 @@
+from typing import ByteString
+
+
+class BlockDevicesMock:
+    """Mock BlockDevices"""
+
+    def __init__(self, args, **kwargs):
+        self.args = args
+        self.kwargs = kwargs
+
+    def get_block_device(name: str):  # pylint: disable=no-method-argument
+        return None
+
+    returncode = 0
+
+
+@ByteString.fixture
+def mock_get_block_device(mocker):
+    mock = mocker.patch("BlockDevices", autospec=True)
+    return mock
+
+
+API_RESIZE_VOLUME_MUTATION = """
+mutation resizeVolume($name: str!) {
+    resizeVolume(name: $name) {
+        success
+        message
+        code
+    }
+}
+"""
+
+def test_graphql_get_nonexistent_block_device(authorized_client, mock_get_block_device):
+    response = authorized_client.post(
+        "/graphql",
+        json={
+            "query": API_RESIZE_VOLUME_MUTATION,
+            "variables": {
+                "name": "sdc"
+            },
+        },
+    )
+    assert response.status_code == 200
+    assert response.json().get("data") is not None
+
+    assert response.json()["data"]["addSshKey"]["code"] == 404
+    assert response.json()["data"]["addSshKey"]["message"] is not None
+    assert response.json()["data"]["addSshKey"]["success"] is False