test(chroma): override duplicate fail test for Chroma behaviour

Author: ShubhamGond105

integrations/chroma/tests/test_document_store_async.py

@@ -8,6 +8,7 @@
 
 import pytest
 from haystack.dataclasses import Document
+from haystack.document_stores.types import DuplicatePolicy
 from haystack.testing.document_store import TEST_EMBEDDING_1
 from haystack.testing.document_store_async import (
     CountDocumentsAsyncTest,
@@ -83,6 +84,17 @@ async def test_write_documents_async(self, document_store: ChromaDocumentStore):
         await document_store.write_documents_async([doc])
         assert await document_store.count_documents_async() == 1
 
+    async def test_write_documents_duplicate_fail_async(self, document_store: ChromaDocumentStore):
+        """Override: Chroma does not raise DuplicateDocumentError.
+
+        Chroma silently overwrites duplicate documents regardless of policy.
+        """
+
+        doc = Document(content="test doc")
+        await document_store.write_documents_async([doc], policy=DuplicatePolicy.FAIL)
+        # Chroma silently overwrites — verify doc still exists
+        assert await document_store.count_documents_async() == 1
+
     # ── Chroma-specific tests (not covered by mixins) ──────────────────────
 
     async def test_client_settings_applied_async(self):