add two test examples (#28236)

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api/controllers/console/datasets/rag_pipeline/datasource_content_preview.py

@@ -1,7 +1,7 @@
 from flask_restx import (  # type: ignore
     Resource,  # type: ignore
-    reqparse,
 )
+from pydantic import BaseModel
 from werkzeug.exceptions import Forbidden
 
 from controllers.console import api, console_ns
@@ -12,17 +12,21 @@ from models import Account
 from models.dataset import Pipeline
 from services.rag_pipeline.rag_pipeline import RagPipelineService
 
-parser = (
-    reqparse.RequestParser()
-    .add_argument("inputs", type=dict, required=True, nullable=False, location="json")
-    .add_argument("datasource_type", type=str, required=True, location="json")
-    .add_argument("credential_id", type=str, required=False, location="json")
-)
+DEFAULT_REF_TEMPLATE_SWAGGER_2_0 = "#/definitions/{model}"
+
+
+class Parser(BaseModel):
+    inputs: dict
+    datasource_type: str
+    credential_id: str | None = None
+
+
+console_ns.schema_model(Parser.__name__, Parser.model_json_schema(ref_template=DEFAULT_REF_TEMPLATE_SWAGGER_2_0))
 
 
 @console_ns.route("/rag/pipelines/<uuid:pipeline_id>/workflows/published/datasource/nodes/<string:node_id>/preview")
 class DataSourceContentPreviewApi(Resource):
-    @api.expect(parser)
+    @api.expect(console_ns.models[Parser.__name__], validate=True)
     @setup_required
     @login_required
     @account_initialization_required
@@ -34,15 +38,10 @@ class DataSourceContentPreviewApi(Resource):
         if not isinstance(current_user, Account):
             raise Forbidden()
 
-        args = parser.parse_args()
-
-        inputs = args.get("inputs")
-        if inputs is None:
-            raise ValueError("missing inputs")
-        datasource_type = args.get("datasource_type")
-        if datasource_type is None:
-            raise ValueError("missing datasource_type")
+        args = Parser.model_validate(api.payload)
 
+        inputs = args.inputs
+        datasource_type = args.datasource_type
         rag_pipeline_service = RagPipelineService()
         preview_content = rag_pipeline_service.run_datasource_node_preview(
             pipeline=pipeline,
@@ -51,6 +50,6 @@ class DataSourceContentPreviewApi(Resource):
             account=current_user,
             datasource_type=datasource_type,
             is_published=True,
-            credential_id=args.get("credential_id"),
+            credential_id=args.credential_id,
         )
         return preview_content, 200