tests are passing w/ burnettk

src/spiffworkflow_backend/routes/process_api_blueprint.py

@@ -282,10 +282,10 @@ def process_instance_create(
 
 
 def process_instance_run(
-    _process_group_id: str,
-    _process_model_id: str,
+    process_group_id: str,
+    process_model_id: str,
     process_instance_id: int,
-    _do_engine_steps: bool = False,
+    do_engine_steps: bool = False,
 ) -> flask.wrappers.Response:
     """Process_instance_run."""
     process_instance = ProcessInstanceService().get_process_instance(

src/spiffworkflow_backend/services/process_model_service.py

@@ -179,15 +179,15 @@ class ProcessModelService(FileSystemService):
             return []
         return process_group.process_models
 
-    def get_process_group(self, process_group_id: str) -> Optional[ProcessGroup]:
+    def get_process_group(self, process_group_id: str) -> ProcessGroup:
         """Look for a given process_group, and return it."""
-        if not os.path.exists(FileSystemService.root_path()):
-            return None  # Nothing to scan yet.  There are no files.
+        if os.path.exists(FileSystemService.root_path()):
             with os.scandir(FileSystemService.root_path()) as directory_items:
                 for item in directory_items:
                     if item.is_dir() and item.name == process_group_id:
                         return self.__scan_process_group(item)
-        return None
+
+        raise ProcessEntityNotFoundError("process_group_not_found", f"Process Group Id: {process_group_id}")
 
     def add_process_group(self, process_group: ProcessGroup) -> ProcessGroup:
         """Add_process_group."""

tests/spiffworkflow_backend/helpers/test_data.py

@@ -18,7 +18,11 @@ def assure_process_group_exists(process_group_id: Optional[str] = None) -> Proce
     process_group = None
     workflow_spec_service = ProcessModelService()
     if process_group_id is not None:
+        try:
             process_group = workflow_spec_service.get_process_group(process_group_id)
+        except ProcessEntityNotFoundError:
+            process_group = None
+
     if process_group is None:
         process_group_id_to_create = "test_process_group"
         if process_group_id is not None:

tests/spiffworkflow_backend/integration/test_process_api.py

@@ -234,6 +234,7 @@ def test_process_group_add(
 
     # Check what is returned
     result = ProcessGroupSchema().loads(response.get_data(as_text=True))
+    assert result is not None
     assert result.display_name == "Another Test Category"
     assert result.id == "test"
 
@@ -262,8 +263,8 @@ def test_process_group_delete(
         f"/v1.0/process-groups/{process_group_id}", headers=logged_in_headers(user)
     )
 
-    deleted = ProcessModelService().get_process_group(process_group_id)
-    assert deleted is None
+    with pytest.raises(ProcessEntityNotFoundError):
+        ProcessModelService().get_process_group(process_group_id)
 
 
 def test_process_group_update(
@@ -585,12 +586,14 @@ def test_process_instance_run(
     response = create_process_instance(
         client, process_group_id, process_model_id, headers
     )
+    assert response.json is not None
     process_instance_id = response.json["id"]
     response = client.post(
         f"/v1.0/process-models/{process_group_id}/{process_model_id}/process-instances/{process_instance_id}/run",
         headers=logged_in_headers(user),
     )
 
+    assert response.json is not None
     assert type(response.json["updated_at_in_seconds"]) is int
     assert response.json["updated_at_in_seconds"] > 0
     assert response.json["status"] == "complete"
@@ -832,6 +835,8 @@ def test_error_handler(
     response = create_process_instance(
         client, process_group_id, process_model_id, headers
     )
+
+    assert response.json is not None
     process_instance_id = response.json["id"]
     process = (
         db.session.query(ProcessInstanceModel)
@@ -961,19 +966,19 @@ def create_process_model(
 
 def create_spec_file(
     client: FlaskClient,
-    process_group_id: str = None,
-    process_model_id: str = None,
-    file_name: str = None,
-    file_data: bytes = None,
+    process_group_id: str = "",
+    process_model_id: str = "",
+    file_name: str = "",
+    file_data: bytes = b"",
 ) -> Dict[str, Optional[Union[str, bool, int]]]:
     """Test_create_spec_file."""
-    if process_group_id is None:
+    if process_group_id == "":
         process_group_id = "random_fact"
-    if process_model_id is None:
+    if process_model_id == "":
         process_model_id = "random_fact"
-    if file_name is None:
+    if file_name == "":
         file_name = "random_fact.svg"
-    if file_data is None:
+    if file_data == b"":
         file_data = b"abcdef"
     spec = load_test_spec(process_model_id, process_group_id=process_group_id)
     data = {"file": (io.BytesIO(file_data), file_name)}