added api to get a single process group w/ burnettk

src/spiffworkflow_backend/api.yml

@@ -25,6 +25,19 @@ paths:
                 type: array
                 items:
                   $ref: "#/components/schemas/WorkflowSpecCategory"
+  /process-group/{process_group_id}:
+    get:
+      operationId: spiffworkflow_backend.routes.process_api_blueprint.process_group_show
+      summary: Returns a single process group
+      tags:
+        - Workflow Specification Category
+      responses:
+        '200':
+          description: Workflow spec category.
+          content:
+            application/json:
+              schema:
+                $ref: "#/components/schemas/WorkflowSpecCategory"
   /workflow-specification:
     # get:
     #   operationId: crc.api.workflow.all_specifications

src/spiffworkflow_backend/routes/process_api_blueprint.py

@@ -87,3 +87,9 @@ def process_groups_list():
     process_model_service = ProcessModelService()
     process_groups = process_model_service.get_process_groups()
     return ProcessGroupSchema(many=True).dump(process_groups)
+
+
+def process_group_show(process_group_id):
+    """Process_group_show."""
+    process_group = ProcessModelService().get_process_group(process_group_id)
+    return ProcessGroupSchema().dump(process_group)

tests/spiffworkflow_backend/helpers/test_data.py

@@ -37,8 +37,11 @@ def assure_process_group_exists(process_group_id=None):
     if process_group_id is not None:
         process_group = workflow_spec_service.get_process_group(process_group_id)
     if process_group is None:
+        process_group_id_to_create = "test_process_group"
+        if process_group_id is not None:
+            process_group_id_to_create = process_group_id
         process_group = ProcessGroup(
-            id="test_process_group",
+            id=process_group_id_to_create,
             display_name="Test Workflows",
             admin=False,
             display_order=0,
@@ -58,6 +61,8 @@ def load_test_spec(
     """Loads a spec into the database based on a directory in /tests/data."""
     process_group = None
     workflow_spec_service = ProcessModelService()
+    if process_group_id is None:
+        process_group_id = dir_name
     if not master_spec and not library:
         process_group = assure_process_group_exists(process_group_id)
         process_group_id = process_group.id

tests/spiffworkflow_backend/integration/test_process_api.py

@@ -81,6 +81,16 @@ def test_get_process_groups_when_there_are_some(app, client: FlaskClient, with_b
     assert len(rv.json) == 1
 
 
+def test_get_process_group_when_found(app, client: FlaskClient, with_bpmn_file_cleanup):
+    user = find_or_create_user()
+    load_test_spec(app, "hello_world")
+    rv = client.get(
+        "/v1.0/process-group/hello_world", headers=logged_in_headers(user)
+    )
+    assert rv.status_code == 200
+    assert rv.json["id"] == "hello_world"
+
+
 def create_process_model(app, client: FlaskClient):
     """Create_process_model."""
     process_model_service = ProcessModelService()