fix: remove document mutation from weaviate tests

[srini047]

Related Issues

• fixes check for WeaviateDocumentStore dataclass in-place mutation warning haystack#11088

Proposed Changes:

Ensure to use replace() instead of mutating docs in place.

How did you test it?

Before change:

➜  weaviate git:(weaviate-mutate) hatch run test:all tests/test_document_store.py::TestWeaviateDocumentStore::test_write_documents                 
========================================================================================= test session starts ==========================================================================================
platform darwin -- Python 3.12.10, pytest-9.0.3, pluggy-1.6.0
rootdir: /Users/apple/Documents/haystack-core-integrations/integrations/weaviate
configfile: pyproject.toml
plugins: cov-7.1.0, asyncio-1.3.0, rerunfailures-16.1, anyio-4.13.0
asyncio: mode=Mode.STRICT, debug=False, asyncio_default_fixture_loop_scope=None, asyncio_default_test_loop_scope=function
collected 1 item                                                                                                                                                                                       

tests/test_document_store.py .                                                                                                                                                                   [100%]

=========================================================================================== warnings summary ===========================================================================================
tests/test_document_store.py::TestWeaviateDocumentStore::test_write_documents
  /Users/apple/Documents/haystack-core-integrations/integrations/weaviate/tests/test_document_store.py:376: Warning: Mutating attribute 'content' on an instance of 'Document' can lead to unexpected behavior by affecting other parts of the pipeline that use the same dataclass instance. Use `dataclasses.replace(instance, content=new_value)` instead. See https://docs.haystack.deepset.ai/docs/custom-components#requirements for details.
    doc.content = "test doc 2"

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
===================================================================================== 1 passed, 1 warning in 3.64s =====================================================================================
➜  weaviate git:(weaviate-mutate) hatch run test:all tests/test_document_store_async.py::TestWeaviateDocumentStoreAsync::test_write_documents_async
========================================================================================= test session starts ==========================================================================================
platform darwin -- Python 3.12.10, pytest-9.0.3, pluggy-1.6.0
rootdir: /Users/apple/Documents/haystack-core-integrations/integrations/weaviate
configfile: pyproject.toml
plugins: cov-7.1.0, asyncio-1.3.0, rerunfailures-16.1, anyio-4.13.0
asyncio: mode=Mode.STRICT, debug=False, asyncio_default_fixture_loop_scope=None, asyncio_default_test_loop_scope=function
collected 1 item                                                                                                                                                                                       

tests/test_document_store_async.py .                                                                                                                                                             [100%]

=========================================================================================== warnings summary ===========================================================================================

After change:

➜  weaviate git:(weaviate-mutate) ✗ hatch run test:all tests/test_document_store.py::TestWeaviateDocumentStore::test_write_documents                 
========================================================================================= test session starts ==========================================================================================
platform darwin -- Python 3.12.10, pytest-9.0.3, pluggy-1.6.0
rootdir: /Users/apple/Documents/haystack-core-integrations/integrations/weaviate
configfile: pyproject.toml
plugins: cov-7.1.0, asyncio-1.3.0, rerunfailures-16.1, anyio-4.13.0
asyncio: mode=Mode.STRICT, debug=False, asyncio_default_fixture_loop_scope=None, asyncio_default_test_loop_scope=function
collected 1 item                                                                                                                                                                                       

tests/test_document_store.py .                                                                                                                                                                   [100%]

========================================================================================== 1 passed in 3.35s ===========================================================================================
➜  weaviate git:(weaviate-mutate) ✗ hatch run test:all tests/test_document_store_async.py::TestWeaviateDocumentStoreAsync::test_write_documents_async
========================================================================================= test session starts ==========================================================================================
platform darwin -- Python 3.12.10, pytest-9.0.3, pluggy-1.6.0
rootdir: /Users/apple/Documents/haystack-core-integrations/integrations/weaviate
configfile: pyproject.toml
plugins: cov-7.1.0, asyncio-1.3.0, rerunfailures-16.1, anyio-4.13.0
asyncio: mode=Mode.STRICT, debug=False, asyncio_default_fixture_loop_scope=None, asyncio_default_test_loop_scope=function
collected 1 item                                                                                                                                                                                       

tests/test_document_store_async.py .                                                                                                                                                             [100%]

========================================================================================== 1 passed in 3.01s ===========================================================================================

Notes for the reviewer

Checklist

• I have read the contributors guidelines and the code of conduct
• I have updated the related issue with new insights and changes
• I added unit tests and updated the docstrings
• I've used one of the conventional commit types for my PR title: fix:, feat:, build:, chore:, ci:, docs:, style:, refactor:, perf:, test:.

[github-actions]

Coverage report (weaviate)

This PR does not seem to contain any modification to coverable code.