langchain

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Miguel Athie b0e4ef3158 test(core): add regression test for list-index $ref resolution (#34097 )

This PR adds a regression test covering the JSON Schema `$ref` pattern
found in
MCP-style schemas, where a `$ref` points into a list-based structure
such as:


#/properties/body/anyOf/1/properties/Message/properties/bccRecipients/items

This pattern historically failed due to incorrect handling of numeric
list
components in `_retrieve_ref`. The underlying bug has since been fixed,
and
this test ensures coverage so we don't regress on list-index `$ref`
resolution.

The new test (`test_dereference_refs_list_index_items_ref_mcp_like`)
verifies:

- correct traversal into `anyOf[1]`
- proper dereferencing of `items.$ref`
- no errors thrown
- `ccRecipients.items` is identical to the resolved schema of
`bccRecipients.items`

No code changes are included, just the one test — this PR adds coverage
to preserve the expected
behavior and documents support for this real-world MCP schema pattern.

Related to #32012.

---------

Co-authored-by: Mason Daugherty <mason@langchain.dev>

2025-12-27 02:18:51 -06:00

__init__.py

…

test_aiter.py

core: Add mypy strict-equality rule (#31286 )

2025-06-02 18:24:35 +00:00

test_env.py

chore(core): fix some ruff preview rules (#32785 )

2025-09-08 15:55:20 +00:00

test_function_calling.py

feat(core): automatic set required to include all properties in strict mode (#32930 )

2025-10-22 11:31:08 -04:00