ci: ensure docs get created with no extracted facts

hindsight-api/tests/test_document_tracking.py

@@ -135,3 +135,179 @@ async def test_memory_without_document(memory, request_context):
 
     finally:
         await memory.delete_bank(bank_id, request_context=request_context)
+
+
+@pytest.mark.asyncio
+async def test_document_persisted_with_zero_facts(memory, request_context):
+    """
+    Test that documents are persisted even when zero facts are extracted.
+
+    This is a regression test for issue #324 where documents with no extractable
+    facts were reported as disappearing from the system.
+    """
+    bank_id = f"test_zero_facts_{datetime.now(timezone.utc).timestamp()}"
+
+    try:
+        document_id = "doc-zero-facts"
+
+        # Retain content that produces zero facts (gibberish/random characters)
+        units = await memory.retain_async(
+            bank_id=bank_id,
+            content="xyzabc123 !!!### @@@ $$$",  # Random characters unlikely to produce facts
+            context="Test zero facts",
+            document_id=document_id,
+            request_context=request_context,
+        )
+
+        # Should return empty unit list (no facts extracted)
+        assert len(units) == 0, "Should extract zero facts from gibberish content"
+
+        # But document should still be persisted and retrievable
+        doc = await memory.get_document(document_id, bank_id, request_context=request_context)
+        assert doc is not None, "Document should be persisted even with zero facts"
+        assert doc["id"] == document_id
+        assert doc["bank_id"] == bank_id
+        assert doc["memory_unit_count"] == 0, "Should have zero memory units"
+        assert len(doc["original_text"]) > 0, "Should have non-zero text length"
+        assert "xyzabc123" in doc["original_text"], "Should contain original content"
+
+        # Document should also appear in list
+        docs_list = await memory.list_documents(
+            bank_id=bank_id,
+            search_query=None,
+            limit=100,
+            offset=0,
+            request_context=request_context,
+        )
+        assert docs_list["total"] == 1, "Document should appear in list"
+        assert any(d["id"] == document_id for d in docs_list["items"]), "Document should be in items"
+
+        listed_doc = next(d for d in docs_list["items"] if d["id"] == document_id)
+        assert listed_doc["memory_unit_count"] == 0, "Listed document should show zero memory units"
+
+    finally:
+        await memory.delete_bank(bank_id, request_context=request_context)
+
+
+@pytest.mark.asyncio
+async def test_document_persisted_with_zero_facts_batch(memory, request_context):
+    """
+    Test that documents are persisted with zero facts in batch retain operations.
+
+    This tests the async batch code path to ensure it also handles zero facts correctly.
+    """
+    bank_id = f"test_zero_facts_batch_{datetime.now(timezone.utc).timestamp()}"
+
+    try:
+        # Mix of content: some produces facts, some produces zero facts
+        contents = [
+            {
+                "content": "Alice works at Google",
+                "document_id": "doc-with-facts",
+            },
+            {
+                "content": "!@# $$$ %%% ^^^ &&& ***",  # Gibberish - zero facts expected
+                "document_id": "doc-zero-facts",
+            },
+        ]
+
+        unit_ids = await memory.retain_batch_async(
+            bank_id=bank_id,
+            contents=contents,
+            request_context=request_context,
+        )
+
+        # First content should produce facts, second should not
+        assert len(unit_ids[0]) > 0, "First content should produce facts"
+        assert len(unit_ids[1]) == 0, "Second content should produce zero facts"
+
+        # Both documents should be persisted
+        doc_with_facts = await memory.get_document("doc-with-facts", bank_id, request_context=request_context)
+        assert doc_with_facts is not None
+        assert doc_with_facts["memory_unit_count"] > 0
+
+        doc_zero_facts = await memory.get_document("doc-zero-facts", bank_id, request_context=request_context)
+        assert doc_zero_facts is not None, "Document with zero facts should be persisted"
+        assert doc_zero_facts["memory_unit_count"] == 0, "Should have zero memory units"
+        assert "!@#" in doc_zero_facts["original_text"]
+
+        # Both should appear in list
+        docs_list = await memory.list_documents(
+            bank_id=bank_id,
+            search_query=None,
+            limit=100,
+            offset=0,
+            request_context=request_context,
+        )
+        assert docs_list["total"] == 2, "Both documents should appear in list"
+
+    finally:
+        await memory.delete_bank(bank_id, request_context=request_context)
+
+
+@pytest.mark.asyncio
+async def test_document_persisted_with_zero_facts_async_submit(memory, request_context):
+    """
+    Test that documents are persisted with zero facts in fire-and-forget async retain.
+
+    This tests the submit_async_retain (background task) code path to ensure it also
+    handles zero facts correctly.
+    """
+    import asyncio
+
+    bank_id = f"test_zero_facts_async_{datetime.now(timezone.utc).timestamp()}"
+
+    try:
+        # Submit async retain with gibberish content
+        result = await memory.submit_async_retain(
+            bank_id=bank_id,
+            contents=[
+                {
+                    "content": "!@# $$$ %%% ^^^ &&& ***",  # Gibberish - zero facts expected
+                    "document_id": "doc-async-zero-facts",
+                }
+            ],
+            request_context=request_context,
+        )
+
+        operation_id = result["operation_id"]
+        assert operation_id is not None, "Should return operation_id"
+
+        # Wait for background task to complete
+        max_wait = 60  # 60 seconds max
+        wait_interval = 0.5
+        elapsed = 0
+
+        while elapsed < max_wait:
+            await asyncio.sleep(wait_interval)
+            elapsed += wait_interval
+
+            # Check if document exists
+            doc = await memory.get_document(
+                "doc-async-zero-facts", bank_id, request_context=request_context
+            )
+            if doc is not None:
+                break
+
+        # Document should be persisted even with zero facts
+        assert doc is not None, "Document should be persisted after async task completes"
+        assert doc["id"] == "doc-async-zero-facts"
+        assert doc["memory_unit_count"] == 0, "Should have zero memory units"
+        assert "!@#" in doc["original_text"]
+
+        # Document should appear in list
+        docs_list = await memory.list_documents(
+            bank_id=bank_id,
+            search_query=None,
+            limit=100,
+            offset=0,
+            request_context=request_context,
+        )
+        assert docs_list["total"] == 1, "Document should appear in list"
+        assert any(d["id"] == "doc-async-zero-facts" for d in docs_list["items"])
+
+        listed_doc = next(d for d in docs_list["items"] if d["id"] == "doc-async-zero-facts")
+        assert listed_doc["memory_unit_count"] == 0, "Listed document should show zero memory units"
+
+    finally:
+        await memory.delete_bank(bank_id, request_context=request_context)