fix: Add support for 'basic' chunking strategy to match documentation

prepline_general/api/models/form_params.py

@@ -178,11 +178,11 @@ def as_form(
         ] = False,
         # -- chunking options --
         chunking_strategy: Annotated[
-            Optional[Literal["by_title"]],
+            Optional[Literal["by_title", "basic"]],
             Form(
                 title="Chunking Strategy",
-                description="Use one of the supported strategies to chunk the returned elements. Currently supports: by_title",
-                examples=["by_title"],
+                description="Use one of the supported strategies to chunk the returned elements. Currently supports: by_title and basic. Default: None",
+                examples=["by_title", "basic"],
             ),
         ] = None,
         combine_under_n_chars: Annotated[

test_general/api/test_app.py

@@ -1153,3 +1153,30 @@ def test_include_slide_notes(monkeypatch, test_default, include_slide_notes, tes
         assert "Here are important notes" == df["text"][0]
     else:
         assert "Here are important notes" != df["text"][0]
+
+def test_basic_chunking_strategy():
+    """
+    Verify that basic chunking strategy works as expected
+    """
+    client = TestClient(app)
+    test_file = Path("sample-docs") / "layout-parser-paper-fast.pdf"
+    response = client.post(
+        MAIN_API_ROUTE,
+        files=[("files", (str(test_file), open(test_file, "rb")))],
+        data={"strategy": "hi_res"},
+    )
+    assert response.status_code == 200
+    response_without_chunking = response.json()
+
+    # chunking
+    response = client.post(
+        MAIN_API_ROUTE,
+        files=[("files", (str(test_file), open(test_file, "rb")))],
+        data={"chunking_strategy": "basic"},
+    )
+    assert response.status_code == 200
+
+    response_with_chunking = response.json()
+    assert len(response_with_chunking) != len(response_without_chunking)
+    assert "CompositeElement" in [element.get("type") for element in response_with_chunking]
+