[2025/10/06 19:08:16.120] _______ TestMongoDBAtlasFullTextSearchRetriever.test_k_constructor_param _______
[2025/10/06 19:08:16.120] self = <tests.integration_tests.test_retrievers_standard.TestMongoDBAtlasFullTextSearchRetriever object at 0x7f44f4a4a450>
[2025/10/06 19:08:16.120]     def test_k_constructor_param(self) -> None:
[2025/10/06 19:08:16.120]         """Test the number of results constructor parameter.
[2025/10/06 19:08:16.120]         Test that the retriever constructor accepts a parameter representing
[2025/10/06 19:08:16.120]         the number of documents to return.
[2025/10/06 19:08:16.120]         By default, the parameter tested is named ``k``, but it can be overridden by
[2025/10/06 19:08:16.120]         setting the ``num_results_arg_name`` property.
[2025/10/06 19:08:16.120]         .. note::
[2025/10/06 19:08:16.120]             If the retriever doesn't support configuring the number of results returned
[2025/10/06 19:08:16.120]             via the constructor, this test can be skipped using a pytest ``xfail`` on
[2025/10/06 19:08:16.120]             the test class:
[2025/10/06 19:08:16.120]             .. code-block:: python
[2025/10/06 19:08:16.120]                 @pytest.mark.xfail(
[2025/10/06 19:08:16.120]                     reason="This retriever doesn't support setting "
[2025/10/06 19:08:16.120]                     "the number of results via the constructor."
[2025/10/06 19:08:16.120]                 )
[2025/10/06 19:08:16.120]                 def test_k_constructor_param(self) -> None:
[2025/10/06 19:08:16.120]                     raise NotImplementedError
[2025/10/06 19:08:16.120]         .. dropdown:: Troubleshooting
[2025/10/06 19:08:16.120]             If this test fails, the retriever constructor does not accept a number
[2025/10/06 19:08:16.120]             of results parameter, or the retriever does not return the correct number
[2025/10/06 19:08:16.120]             of documents ( of the one set in ``num_results_arg_name``) when it is
[2025/10/06 19:08:16.120]             set.
[2025/10/06 19:08:16.120]             For example, a retriever like
[2025/10/06 19:08:16.120]             .. code-block:: python
[2025/10/06 19:08:16.120]                     MyRetriever(k=3).invoke("query")
[2025/10/06 19:08:16.120]             should return 3 documents when invoked with a query.
[2025/10/06 19:08:16.120]         """
[2025/10/06 19:08:16.120]         params = {
[2025/10/06 19:08:16.120]             k: v
[2025/10/06 19:08:16.120]             for k, v in self.retriever_constructor_params.items()
[2025/10/06 19:08:16.120]             if k != self.num_results_arg_name
[2025/10/06 19:08:16.120]         }
[2025/10/06 19:08:16.120]         params_3 = {**params, self.num_results_arg_name: 3}
[2025/10/06 19:08:16.120]         retriever_3 = self.retriever_constructor(**params_3)
[2025/10/06 19:08:16.120]         result_3 = retriever_3.invoke(self.retriever_query_example)
[2025/10/06 19:08:16.120] >       assert len(result_3) == 3
[2025/10/06 19:08:16.120] E       assert 0 == 3
[2025/10/06 19:08:16.120] E        +  where 0 = len([])
[2025/10/06 19:08:16.120] .venv/lib64/python3.12/site-packages/langchain_tests/integration_tests/retrievers.py:95: AssertionError
[2025/10/06 19:08:16.120] =============================== warnings summary ===============================