fix: processing complex params in multipart-form (#210)

Signed-off-by: Michele Dolfi <dol@zurich.ibm.com>

tests/test_file_opts.py

@@ -0,0 +1,77 @@
+import asyncio
+import json
+import os
+
+import pytest
+import pytest_asyncio
+from asgi_lifespan import LifespanManager
+from httpx import ASGITransport, AsyncClient
+
+from docling_core.types import DoclingDocument
+from docling_core.types.doc.document import PictureDescriptionData
+
+from docling_serve.app import create_app
+
+
+@pytest.fixture(scope="session")
+def event_loop():
+    return asyncio.get_event_loop()
+
+
+@pytest_asyncio.fixture(scope="session")
+async def app():
+    app = create_app()
+
+    async with LifespanManager(app) as manager:
+        print("Launching lifespan of app.")
+        yield manager.app
+
+
+@pytest_asyncio.fixture(scope="session")
+async def client(app):
+    async with AsyncClient(
+        transport=ASGITransport(app=app), base_url="http://app.io"
+    ) as client:
+        print("Client is ready")
+        yield client
+
+
+@pytest.mark.asyncio
+async def test_convert_file(client: AsyncClient):
+    """Test convert single file to all outputs"""
+
+    endpoint = "/v1alpha/convert/file"
+    options = {
+        "to_formats": ["md", "json"],
+        "image_export_mode": "placeholder",
+        "ocr": False,
+        "do_picture_description": True,
+        "picture_description_api": json.dumps(
+            {
+                "url": "http://localhost:11434/v1/chat/completions",  # ollama
+                "params": {"model": "granite3.2-vision:2b"},
+                "timeout": 60,
+                "prompt": "Describe this image in a few sentences. ",
+            }
+        ),
+    }
+
+    current_dir = os.path.dirname(__file__)
+    file_path = os.path.join(current_dir, "2206.01062v1.pdf")
+
+    files = {
+        "files": ("2206.01062v1.pdf", open(file_path, "rb"), "application/pdf"),
+    }
+
+    response = await client.post(endpoint, files=files, data=options)
+    assert response.status_code == 200, "Response should be 200 OK"
+
+    data = response.json()
+
+    doc = DoclingDocument.model_validate(data["document"]["json_content"])
+
+    for pic in doc.pictures:
+        for ann in pic.annotations:
+            if isinstance(ann, PictureDescriptionData):
+                print(f"{pic.self_ref}")
+                print(ann.text)