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"""Test tool utils."""
import pytest
from langchain.agents.tools import Tool, tool
def test_unnamed_decorator() -> None:
"""Test functionality with unnamed decorator."""
@tool
def search_api(query: str) -> str:
"""Search the API for the query."""
return "API result"
assert isinstance(search_api, Tool)
assert search_api.name == "search_api"
assert not search_api.return_direct
assert search_api("test") == "API result"
def test_named_tool_decorator() -> None:
"""Test functionality when arguments are provided as input to decorator."""
@tool("search")
def search_api(query: str) -> str:
"""Search the API for the query."""
return "API result"
assert isinstance(search_api, Tool)
assert search_api.name == "search"
assert not search_api.return_direct
def test_named_tool_decorator_return_direct() -> None:
"""Test functionality when arguments and return direct are provided as input."""
@tool("search", return_direct=True)
def search_api(query: str) -> str:
"""Search the API for the query."""
return "API result"
assert isinstance(search_api, Tool)
assert search_api.name == "search"
assert search_api.return_direct
def test_unnamed_tool_decorator_return_direct() -> None:
"""Test functionality when only return direct is provided."""
@tool(return_direct=True)
def search_api(query: str) -> str:
"""Search the API for the query."""
return "API result"
assert isinstance(search_api, Tool)
assert search_api.name == "search_api"
assert search_api.return_direct
def test_missing_docstring() -> None:
"""Test error is raised when docstring is missing."""
# expect to throw a value error if theres no docstring
with pytest.raises(AssertionError):
@tool
def search_api(query: str) -> str:
return "API result"
def test_create_tool_posistional_args() -> None:
"""Test that positional arguments are allowed."""
test_tool = Tool("test_name", lambda x: x, "test_description")
assert test_tool("foo") == "foo"
assert test_tool.name == "test_name"
assert test_tool.description == "test_description"
def test_create_tool_keyword_args() -> None:
"""Test that keyword arguments are allowed."""
test_tool = Tool(name="test_name", func=lambda x: x, description="test_description")
assert test_tool("foo") == "foo"
assert test_tool.name == "test_name"
assert test_tool.description == "test_description"
@pytest.mark.asyncio
async def test_create_async_tool() -> None:
"""Test that async tools are allowed."""
async def _test_func(x: str) -> str:
return x
test_tool = Tool(
name="test_name",
func=lambda x: x,
description="test_description",
coroutine=_test_func,
)
assert test_tool("foo") == "foo"
assert test_tool.name == "test_name"
assert test_tool.description == "test_description"
assert test_tool.coroutine is not None
assert await test_tool.arun("foo") == "foo"
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