from __future__ import annotations

from agent.tools.schema import SchemaGenerator


def test_schema_generator_resolves_postponed_nested_annotations() -> None:
    async def sample(
        contracts: list[dict[str, object]],
        replacement: dict[str, object] | None = None,
    ) -> None:
        pass

    properties = SchemaGenerator.generate(sample)["function"]["parameters"]["properties"]

    assert properties["contracts"] == {
        "type": "array",
        "items": {"type": "object"},
    }
    assert properties["replacement"] == {
        "type": "object",
        "default": None,
    }