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openai--openai-agents-python/tests/models/test_openai_responses_converter.py
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2026-07-13 12:39:17 +08:00

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# Copyright (c) OpenAI
#
# Licensed under the MIT License.
# See LICENSE file in the project root for full license information.
"""
Unit tests for the `Converter` class defined in
`agents.models.openai_responses`. The converter is responsible for
translating various agent tool types and output schemas into the parameter
structures expected by the OpenAI Responses API.
We test the following aspects:
- `convert_tool_choice` correctly maps high-level tool choice strings into
the tool choice values accepted by the Responses API, including special types
like `file_search` and `web_search`, and falling back to function names
for arbitrary string values.
- `get_response_format` returns `openai.omit` for plain-text response
formats and an appropriate format dict when a JSON-structured output schema
is provided.
- `convert_tools` maps our internal `Tool` dataclasses into the appropriate
request payloads and includes list, and enforces constraints like at most
one `ComputerTool`.
"""
from typing import Any, cast
import pytest
from openai import omit
from pydantic import BaseModel
from agents import (
Agent,
AgentOutputSchema,
Computer,
ComputerTool,
FileSearchTool,
Handoff,
HostedMCPTool,
ShellTool,
Tool,
ToolSearchTool,
UserError,
WebSearchTool,
function_tool,
handoff,
tool_namespace,
)
from agents.model_settings import MCPToolChoice
from agents.models.openai_responses import Converter
class DummyComputer(Computer):
@property
def environment(self):
return "mac"
@property
def dimensions(self):
return (800, 600)
def screenshot(self) -> str:
raise NotImplementedError
def click(self, x: int, y: int, button: str) -> None:
raise NotImplementedError
def double_click(self, x: int, y: int) -> None:
raise NotImplementedError
def scroll(self, x: int, y: int, scroll_x: int, scroll_y: int) -> None:
raise NotImplementedError
def type(self, text: str) -> None:
raise NotImplementedError
def wait(self) -> None:
raise NotImplementedError
def move(self, x: int, y: int) -> None:
raise NotImplementedError
def keypress(self, keys: list[str]) -> None:
raise NotImplementedError
def drag(self, path: list[tuple[int, int]]) -> None:
raise NotImplementedError
def test_convert_tool_choice_standard_values():
"""
Make sure that the standard tool_choice values map to themselves or
to "auto"/"required"/"none" as appropriate, and that special string
values map to the appropriate dicts.
"""
assert Converter.convert_tool_choice(None) is omit
assert Converter.convert_tool_choice("auto") == "auto"
assert Converter.convert_tool_choice("required") == "required"
assert Converter.convert_tool_choice("none") == "none"
# Special tool types are represented as dicts of type only.
assert Converter.convert_tool_choice("file_search") == {"type": "file_search"}
assert Converter.convert_tool_choice("web_search_preview") == {"type": "web_search_preview"}
# Arbitrary string should be interpreted as a function name.
assert Converter.convert_tool_choice("my_function") == {
"type": "function",
"name": "my_function",
}
def test_convert_tool_choice_computer_variants_follow_effective_model() -> None:
comp_tool = ComputerTool(computer=DummyComputer())
assert Converter.convert_tool_choice(
"computer",
tools=[comp_tool],
model="gpt-5.4",
) == {"type": "computer"}
assert Converter.convert_tool_choice(
"computer_use",
tools=[comp_tool],
model="gpt-5.4",
) == {"type": "computer"}
assert Converter.convert_tool_choice(
"computer_use_preview",
tools=[comp_tool],
model="gpt-5.4",
) == {"type": "computer"}
assert Converter.convert_tool_choice(
"computer_use_preview",
tools=[comp_tool],
model="computer-use-preview",
) == {"type": "computer_use_preview"}
assert Converter.convert_tool_choice(
"computer",
tools=[comp_tool],
model="computer-use-preview",
) == {"type": "computer_use_preview"}
assert Converter.convert_tool_choice(
"computer_use",
tools=[comp_tool],
model="computer-use-preview",
) == {"type": "computer_use_preview"}
assert Converter.convert_tool_choice(
"computer_use",
tools=[comp_tool],
model=None,
) == {"type": "computer"}
assert Converter.convert_tool_choice(
"computer",
tools=[comp_tool],
model=None,
) == {"type": "computer"}
def test_convert_tool_choice_allows_function_named_computer_without_computer_tool() -> None:
computer_function = function_tool(lambda: "ok", name_override="computer")
computer_use_function = function_tool(lambda: "ok", name_override="computer_use")
assert Converter.convert_tool_choice("computer", tools=[computer_function]) == {
"type": "function",
"name": "computer",
}
assert Converter.convert_tool_choice("computer_use", tools=[computer_use_function]) == {
"type": "function",
"name": "computer_use",
}
def test_convert_tool_choice_allows_function_named_tool_search() -> None:
tool = function_tool(lambda city: city, name_override="tool_search")
assert Converter.convert_tool_choice("tool_search", tools=[tool]) == {
"type": "function",
"name": "tool_search",
}
def test_convert_tool_choice_rejects_hosted_tool_search_choice() -> None:
deferred_tool = function_tool(
lambda city: city,
name_override="lookup_weather",
defer_loading=True,
)
with pytest.raises(UserError, match="ToolSearchTool\\(\\)"):
Converter.convert_tool_choice("tool_search", tools=[deferred_tool, ToolSearchTool()])
def test_convert_tool_choice_rejects_tool_search_without_matching_definition() -> None:
namespaced_tool = tool_namespace(
name="crm",
description="CRM tools",
tools=[function_tool(lambda city: city, name_override="lookup_weather")],
)[0]
with pytest.raises(
UserError,
match="requires ToolSearchTool\\(\\) or a real top-level function tool named `tool_search`",
):
Converter.convert_tool_choice("tool_search", tools=[namespaced_tool])
def test_convert_tool_choice_allows_function_named_tool_search_with_hosted_tool_search() -> None:
named_tool = function_tool(lambda city: city, name_override="tool_search")
deferred_tool = function_tool(
lambda city: city,
name_override="lookup_weather",
defer_loading=True,
)
assert Converter.convert_tool_choice(
"tool_search",
tools=[named_tool, deferred_tool, ToolSearchTool()],
) == {
"type": "function",
"name": "tool_search",
}
def test_convert_tool_choice_required_allows_eager_namespace_tools_without_tool_search() -> None:
tools = tool_namespace(
name="crm",
description="CRM tools",
tools=[function_tool(lambda customer_id: customer_id, name_override="lookup_account")],
)
assert Converter.convert_tool_choice("required", tools=tools) == "required"
def test_convert_tool_choice_required_allows_eager_namespace_tools_with_tool_search() -> None:
tools: list[Tool] = [
*tool_namespace(
name="crm",
description="CRM tools",
tools=[function_tool(lambda customer_id: customer_id, name_override="lookup_account")],
),
ToolSearchTool(),
]
assert Converter.convert_tool_choice("required", tools=tools) == "required"
def test_convert_tool_choice_required_rejects_deferred_function_tools() -> None:
tools: list[Tool] = [
function_tool(
lambda customer_id: customer_id,
name_override="lookup_account",
defer_loading=True,
)
]
with pytest.raises(UserError, match="ToolSearchTool\\(\\)"):
Converter.convert_tool_choice("required", tools=tools)
def test_convert_tool_choice_required_allows_deferred_function_tools_with_tool_search() -> None:
tools: list[Tool] = [
function_tool(
lambda customer_id: customer_id,
name_override="lookup_account",
defer_loading=True,
),
ToolSearchTool(),
]
assert Converter.convert_tool_choice("required", tools=tools) == "required"
def test_convert_tool_choice_required_allows_deferred_hosted_mcp_tools_with_tool_search() -> None:
tools: list[Tool] = [
HostedMCPTool(
tool_config=cast(
Any,
{
"type": "mcp",
"server_label": "crm_server",
"server_url": "https://example.com/mcp",
"defer_loading": True,
},
)
),
ToolSearchTool(),
]
assert Converter.convert_tool_choice("required", tools=tools) == "required"
def test_convert_tool_choice_allows_qualified_namespaced_function_tools() -> None:
namespaced_tool = tool_namespace(
name="crm",
description="CRM tools",
tools=[function_tool(lambda customer_id: customer_id, name_override="lookup_account")],
)[0]
assert Converter.convert_tool_choice("crm.lookup_account", tools=[namespaced_tool]) == {
"type": "function",
"name": "crm.lookup_account",
}
def test_convert_tool_choice_rejects_namespace_wrapper_and_bare_inner_name() -> None:
namespaced_tool = tool_namespace(
name="crm",
description="CRM tools",
tools=[function_tool(lambda customer_id: customer_id, name_override="lookup_account")],
)[0]
with pytest.raises(UserError, match="tool_namespace\\(\\)"):
Converter.convert_tool_choice("lookup_account", tools=[namespaced_tool])
with pytest.raises(UserError, match="tool_namespace\\(\\)"):
Converter.convert_tool_choice("crm", tools=[namespaced_tool])
def test_convert_tool_choice_allows_top_level_function_with_namespaced_tools_present() -> None:
top_level_tool = function_tool(lambda customer_id: customer_id, name_override="lookup_account")
namespaced_tool = tool_namespace(
name="crm",
description="CRM tools",
tools=[function_tool(lambda customer_id: customer_id, name_override="lookup_account")],
)[0]
assert Converter.convert_tool_choice(
"lookup_account",
tools=[top_level_tool, namespaced_tool],
) == {"type": "function", "name": "lookup_account"}
def test_convert_tool_choice_allows_handoff_with_namespaced_function_name_clash() -> None:
namespaced_tool = tool_namespace(
name="crm",
description="CRM tools",
tools=[function_tool(lambda customer_id: customer_id, name_override="lookup_account")],
)[0]
transfer_handoff = handoff(Agent(name="specialist"), tool_name_override="lookup_account")
assert Converter.convert_tool_choice(
"lookup_account",
tools=[namespaced_tool],
handoffs=[transfer_handoff],
) == {"type": "function", "name": "lookup_account"}
def test_convert_tool_choice_rejects_deferred_only_function_tools() -> None:
deferred_tool = function_tool(
lambda customer_id: customer_id,
name_override="lookup_account",
defer_loading=True,
)
with pytest.raises(UserError, match="deferred-loading function tools"):
Converter.convert_tool_choice("lookup_account", tools=[deferred_tool])
def test_convert_tool_choice_allows_visible_top_level_function_with_deferred_peer() -> None:
top_level_tool = function_tool(lambda customer_id: customer_id, name_override="lookup_account")
deferred_tool = function_tool(
lambda customer_id: customer_id,
name_override="lookup_account",
defer_loading=True,
)
assert Converter.convert_tool_choice(
"lookup_account",
tools=[top_level_tool, deferred_tool],
) == {"type": "function", "name": "lookup_account"}
def test_get_response_format_plain_text_and_json_schema():
"""
For plain text output (default, or output type of `str`), the converter
should return omit, indicating no special response format constraint.
If an output schema is provided for a structured type, the converter
should return a `format` dict with the schema and strictness. The exact
JSON schema depends on the output type; we just assert that required
keys are present and that we get back the original schema.
"""
# Default output (None) should be considered plain text.
assert Converter.get_response_format(None) is omit
# An explicit plain-text schema (str) should also yield omit.
assert Converter.get_response_format(AgentOutputSchema(str)) is omit
# A model-based schema should produce a format dict.
class OutModel(BaseModel):
foo: int
bar: str
out_schema = AgentOutputSchema(OutModel)
fmt = Converter.get_response_format(out_schema)
assert isinstance(fmt, dict)
assert "format" in fmt
inner = fmt["format"]
assert inner.get("type") == "json_schema"
assert inner.get("name") == "final_output"
assert isinstance(inner.get("schema"), dict)
# Should include a strict flag matching the schema's strictness setting.
assert inner.get("strict") == out_schema.is_strict_json_schema()
def test_convert_tools_basic_types_and_includes():
"""
Construct a variety of tool types and make sure `convert_tools` returns
a matching list of tool param dicts and the expected includes. Also
check that only a single computer tool is allowed.
"""
# Simple function tool
tool_fn = function_tool(lambda a: "x", name_override="fn")
# File search tool with include_search_results set
file_tool = FileSearchTool(
max_num_results=3, vector_store_ids=["vs1"], include_search_results=True
)
# Web search tool with custom params
web_tool = WebSearchTool(user_location=None, search_context_size="high")
# Wrap our concrete computer in a ComputerTool for conversion.
comp_tool = ComputerTool(computer=DummyComputer())
tools: list[Tool] = [tool_fn, file_tool, web_tool, comp_tool]
converted = Converter.convert_tools(tools, handoffs=[], model="gpt-5.4")
assert isinstance(converted.tools, list)
assert isinstance(converted.includes, list)
# The includes list should have exactly the include for file search when include_search_results
# is True.
assert converted.includes == ["file_search_call.results"]
# There should be exactly four converted tool dicts.
assert len(converted.tools) == 4
# Extract types and verify.
types = [ct["type"] for ct in converted.tools]
assert "function" in types
assert "file_search" in types
assert "web_search" in types
assert "computer" in types
# Verify file search tool contains max_num_results and vector_store_ids
file_params = next(ct for ct in converted.tools if ct["type"] == "file_search")
assert file_params.get("max_num_results") == file_tool.max_num_results
assert file_params.get("vector_store_ids") == file_tool.vector_store_ids
# Verify web search tool contains user_location and search_context_size
web_params = next(ct for ct in converted.tools if ct["type"] == "web_search")
assert web_params.get("user_location") == web_tool.user_location
assert web_params.get("search_context_size") == web_tool.search_context_size
assert "external_web_access" not in web_params
# Verify computer tool uses the GA built-in tool payload.
comp_params = next(ct for ct in converted.tools if ct["type"] == "computer")
assert comp_params == {"type": "computer"}
# The function tool dict should have name and description fields.
fn_params = next(ct for ct in converted.tools if ct["type"] == "function")
assert fn_params.get("name") == tool_fn.name
assert fn_params.get("description") == tool_fn.description
# Only one computer tool should be allowed.
with pytest.raises(UserError):
Converter.convert_tools(tools=[comp_tool, comp_tool], handoffs=[])
def test_convert_tools_includes_explicit_false_external_web_access() -> None:
web_tool = WebSearchTool(external_web_access=False)
converted = Converter.convert_tools([web_tool], handoffs=[], model="gpt-5.4")
assert converted.includes == []
assert converted.tools == [
{
"type": "web_search",
"filters": None,
"user_location": None,
"search_context_size": "medium",
"external_web_access": False,
}
]
def test_convert_tools_uses_preview_computer_payload_for_preview_model() -> None:
comp_tool = ComputerTool(computer=DummyComputer())
converted = Converter.convert_tools(
tools=[comp_tool],
handoffs=[],
model="computer-use-preview",
)
assert converted.tools == [
{
"type": "computer_use_preview",
"environment": "mac",
"display_width": 800,
"display_height": 600,
}
]
def test_convert_tools_prompt_managed_computer_defaults_to_preview_payload() -> None:
comp_tool = ComputerTool(computer=DummyComputer())
converted = Converter.convert_tools(
tools=[comp_tool],
handoffs=[],
model=None,
)
assert converted.tools == [
{
"type": "computer_use_preview",
"environment": "mac",
"display_width": 800,
"display_height": 600,
}
]
def test_convert_tools_shell_local_environment() -> None:
shell_tool = ShellTool(executor=lambda request: "ok")
converted = Converter.convert_tools(tools=[shell_tool], handoffs=[])
assert converted.tools == [{"type": "shell", "environment": {"type": "local"}}]
assert converted.includes == []
def test_convert_tools_shell_container_reference_environment() -> None:
shell_tool = ShellTool(environment={"type": "container_reference", "container_id": "cntr_123"})
converted = Converter.convert_tools(tools=[shell_tool], handoffs=[])
assert converted.tools == [
{
"type": "shell",
"environment": {
"type": "container_reference",
"container_id": "cntr_123",
},
}
]
def test_convert_tools_shell_container_auto_environment() -> None:
shell_tool = ShellTool(
environment={
"type": "container_auto",
"file_ids": ["file-123"],
"memory_limit": "1g",
"network_policy": {
"type": "allowlist",
"allowed_domains": ["example.com"],
"domain_secrets": [{"domain": "example.com", "name": "TOKEN", "value": "secret"}],
},
"skills": [
{"type": "skill_reference", "skill_id": "skill_123", "version": "latest"},
{
"type": "inline",
"name": "csv-workbench",
"description": "Analyze CSV files.",
"source": {
"type": "base64",
"media_type": "application/zip",
"data": "ZmFrZS16aXA=",
},
},
],
}
)
converted = Converter.convert_tools(tools=[shell_tool], handoffs=[])
assert converted.tools == [
{
"type": "shell",
"environment": {
"type": "container_auto",
"file_ids": ["file-123"],
"memory_limit": "1g",
"network_policy": {
"type": "allowlist",
"allowed_domains": ["example.com"],
"domain_secrets": [
{"domain": "example.com", "name": "TOKEN", "value": "secret"}
],
},
"skills": [
{
"type": "skill_reference",
"skill_id": "skill_123",
"version": "latest",
},
{
"type": "inline",
"name": "csv-workbench",
"description": "Analyze CSV files.",
"source": {
"type": "base64",
"media_type": "application/zip",
"data": "ZmFrZS16aXA=",
},
},
],
},
}
]
def test_convert_tools_tool_search_and_namespaces() -> None:
eager_tool = function_tool(
lambda customer_id: customer_id, name_override="get_customer_profile"
)
deferred_tool = function_tool(
lambda customer_id: customer_id,
name_override="list_open_orders",
defer_loading=True,
)
converted = Converter.convert_tools(
tools=[
*tool_namespace(
name="crm",
description="CRM tools for customer lookups.",
tools=[eager_tool, deferred_tool],
),
ToolSearchTool(),
],
handoffs=[],
)
assert converted.includes == []
assert converted.tools == [
{
"type": "namespace",
"name": "crm",
"description": "CRM tools for customer lookups.",
"tools": [
{
"type": "function",
"name": "get_customer_profile",
"description": eager_tool.description,
"parameters": eager_tool.params_json_schema,
"strict": True,
},
{
"type": "function",
"name": "list_open_orders",
"description": deferred_tool.description,
"parameters": deferred_tool.params_json_schema,
"strict": True,
"defer_loading": True,
},
],
},
{"type": "tool_search"},
]
def test_convert_tools_top_level_deferred_function_requires_tool_search() -> None:
deferred_tool = function_tool(
lambda city: city,
name_override="get_weather",
defer_loading=True,
)
with pytest.raises(UserError, match="ToolSearchTool\\(\\)"):
Converter.convert_tools(tools=[deferred_tool], handoffs=[])
def test_convert_tools_rejects_tool_search_without_deferred_function() -> None:
eager_tool = function_tool(lambda city: city, name_override="get_weather")
with pytest.raises(
UserError,
match=("ToolSearchTool\\(\\) requires at least one searchable Responses surface"),
):
Converter.convert_tools(tools=[eager_tool, ToolSearchTool()], handoffs=[])
def test_convert_tools_allows_prompt_managed_tool_search_without_local_surface() -> None:
converted = Converter.convert_tools(
tools=[ToolSearchTool()],
handoffs=[],
allow_opaque_tool_search_surface=True,
)
assert converted.tools == [{"type": "tool_search"}]
def test_convert_tools_rejects_duplicate_tool_search_tools() -> None:
deferred_tool = function_tool(
lambda city: city,
name_override="get_weather",
defer_loading=True,
)
with pytest.raises(UserError, match="Only one ToolSearchTool\\(\\) is allowed"):
Converter.convert_tools(
tools=[deferred_tool, ToolSearchTool(), ToolSearchTool()],
handoffs=[],
)
def test_convert_tools_top_level_deferred_function_with_tool_search() -> None:
deferred_tool = function_tool(
lambda city: city,
name_override="get_weather",
defer_loading=True,
)
converted = Converter.convert_tools(tools=[deferred_tool, ToolSearchTool()], handoffs=[])
assert converted.tools == [
{
"type": "function",
"name": "get_weather",
"description": deferred_tool.description,
"parameters": deferred_tool.params_json_schema,
"strict": True,
"defer_loading": True,
},
{"type": "tool_search"},
]
def test_convert_tools_preserves_tool_search_config_fields() -> None:
deferred_tool = function_tool(
lambda city: city,
name_override="get_weather",
defer_loading=True,
)
converted = Converter.convert_tools(
tools=[
deferred_tool,
ToolSearchTool(
description="Search deferred tools on the server.",
execution="server",
parameters={
"type": "object",
"properties": {
"query": {"type": "string"},
},
"required": ["query"],
},
),
],
handoffs=[],
)
assert converted.tools[-1] == {
"type": "tool_search",
"description": "Search deferred tools on the server.",
"execution": "server",
"parameters": {
"type": "object",
"properties": {"query": {"type": "string"}},
"required": ["query"],
},
}
def test_convert_tools_allows_client_executed_tool_search_for_manual_flows() -> None:
deferred_tool = function_tool(
lambda city: city,
name_override="get_weather",
defer_loading=True,
)
converted = Converter.convert_tools(
tools=[
deferred_tool,
ToolSearchTool(
execution="client",
parameters={
"type": "object",
"properties": {"query": {"type": "string"}},
"required": ["query"],
},
),
],
handoffs=[],
)
assert converted.tools[-1] == {
"type": "tool_search",
"execution": "client",
"parameters": {
"type": "object",
"properties": {"query": {"type": "string"}},
"required": ["query"],
},
}
def test_convert_tools_namespace_only_allows_eager_namespaces_without_tool_search() -> None:
crm_tool = function_tool(lambda customer_id: customer_id, name_override="lookup_account")
converted = Converter.convert_tools(
tools=[
*tool_namespace(
name="crm",
description="CRM tools",
tools=[crm_tool],
),
],
handoffs=[],
)
assert converted.tools == [
{
"type": "namespace",
"name": "crm",
"description": "CRM tools",
"tools": [
{
"type": "function",
"name": "lookup_account",
"description": crm_tool.description,
"parameters": crm_tool.params_json_schema,
"strict": True,
}
],
}
]
def test_convert_tools_allows_tool_search_with_namespace_only_tools() -> None:
crm_tool = function_tool(lambda customer_id: customer_id, name_override="lookup_account")
converted = Converter.convert_tools(
tools=[
*tool_namespace(
name="crm",
description="CRM tools",
tools=[crm_tool],
),
ToolSearchTool(),
],
handoffs=[],
)
assert converted.tools == [
{
"type": "namespace",
"name": "crm",
"description": "CRM tools",
"tools": [
{
"type": "function",
"name": "lookup_account",
"description": crm_tool.description,
"parameters": crm_tool.params_json_schema,
"strict": True,
}
],
},
{"type": "tool_search"},
]
def test_convert_tools_deferred_hosted_mcp_requires_tool_search() -> None:
hosted_mcp = HostedMCPTool(
tool_config=cast(
Any,
{
"type": "mcp",
"server_label": "crm_server",
"server_url": "https://example.com/mcp",
"defer_loading": True,
},
)
)
with pytest.raises(UserError, match="ToolSearchTool\\(\\)"):
Converter.convert_tools(tools=[hosted_mcp], handoffs=[])
def test_convert_tools_deferred_hosted_mcp_with_tool_search() -> None:
hosted_mcp = HostedMCPTool(
tool_config=cast(
Any,
{
"type": "mcp",
"server_label": "crm_server",
"server_url": "https://example.com/mcp",
"defer_loading": True,
},
)
)
converted = Converter.convert_tools(tools=[hosted_mcp, ToolSearchTool()], handoffs=[])
assert converted.tools == [
{
"type": "mcp",
"server_label": "crm_server",
"server_url": "https://example.com/mcp",
"defer_loading": True,
},
{"type": "tool_search"},
]
def test_convert_tools_rejects_reserved_same_name_namespace_shape() -> None:
invalid_tool = function_tool(lambda customer_id: customer_id, name_override="lookup_account")
invalid_tool._tool_namespace = "lookup_account"
invalid_tool._tool_namespace_description = "Same-name namespace"
with pytest.raises(UserError, match="synthetic namespace `lookup_account.lookup_account`"):
Converter.convert_tools(
tools=[invalid_tool, ToolSearchTool()],
handoffs=[],
)
def test_convert_tools_rejects_qualified_name_collision_with_dotted_top_level_tool() -> None:
dotted_top_level_tool = function_tool(
lambda customer_id: customer_id,
name_override="crm.lookup_account",
)
namespaced_tool = tool_namespace(
name="crm",
description="CRM tools",
tools=[function_tool(lambda customer_id: customer_id, name_override="lookup_account")],
)[0]
with pytest.raises(UserError, match="qualified name `crm.lookup_account`"):
Converter.convert_tools(
tools=[dotted_top_level_tool, namespaced_tool, ToolSearchTool()],
handoffs=[],
)
def test_convert_tools_rejects_duplicate_deferred_top_level_names() -> None:
first_deferred_tool = function_tool(
lambda customer_id: customer_id,
name_override="lookup_account",
defer_loading=True,
)
second_deferred_tool = function_tool(
lambda customer_id: customer_id,
name_override="lookup_account",
defer_loading=True,
)
with pytest.raises(UserError, match="deferred top-level tool name `lookup_account`"):
Converter.convert_tools(
tools=[first_deferred_tool, second_deferred_tool, ToolSearchTool()],
handoffs=[],
)
def test_convert_tools_allows_dotted_non_function_tool_name_with_namespaced_function() -> None:
shell_tool = ShellTool(executor=lambda request: "ok", name="crm.lookup_account")
namespaced_tool = tool_namespace(
name="crm",
description="CRM tools",
tools=[function_tool(lambda customer_id: customer_id, name_override="lookup_account")],
)[0]
converted = Converter.convert_tools(
tools=[shell_tool, namespaced_tool],
handoffs=[],
)
assert len(converted.tools) == 2
namespace_tool = cast(
dict[str, Any],
next(
tool
for tool in converted.tools
if isinstance(tool, dict) and tool.get("type") == "namespace"
),
)
shell_payload = cast(
dict[str, Any],
next(
tool
for tool in converted.tools
if isinstance(tool, dict) and tool.get("type") == "shell"
),
)
assert shell_payload["environment"] == {"type": "local"}
assert namespace_tool["name"] == "crm"
assert namespace_tool["tools"][0]["name"] == "lookup_account"
def test_convert_tools_shell_environment_passes_through_unknown_fields() -> None:
shell_tool = ShellTool(
environment=cast(
Any,
{
"type": "container_auto",
"network_policy": {
"type": "future_mode",
"allowed_domains": ["example.com"],
"some_new_field": "keep-me",
},
},
)
)
converted = Converter.convert_tools(tools=[shell_tool], handoffs=[])
assert converted.tools == [
{
"type": "shell",
"environment": {
"type": "container_auto",
"network_policy": {
"type": "future_mode",
"allowed_domains": ["example.com"],
"some_new_field": "keep-me",
},
},
}
]
def test_convert_tools_includes_handoffs():
"""
When handoff objects are included, `convert_tools` should append their
tool param dicts after tools and include appropriate descriptions.
"""
agent = Agent(name="support", handoff_description="Handles support")
handoff_obj = handoff(agent)
converted = Converter.convert_tools(tools=[], handoffs=[handoff_obj])
assert isinstance(converted.tools, list)
assert len(converted.tools) == 1
handoff_tool = converted.tools[0]
assert handoff_tool.get("type") == "function"
assert handoff_tool.get("name") == Handoff.default_tool_name(agent)
assert handoff_tool.get("description") == Handoff.default_tool_description(agent)
# No includes for handoffs by default.
assert converted.includes == []
@pytest.mark.parametrize("model", ["gpt-5.4", "gpt-5.5"])
def test_convert_tools_accepts_unresolved_computer_initializer(model: str):
comp_tool = ComputerTool(computer=lambda **_: DummyComputer())
converted = Converter.convert_tools(tools=[comp_tool], handoffs=[], model=model)
assert converted.tools == [{"type": "computer"}]
def test_resolve_computer_tool_model_returns_none_when_request_model_is_omitted():
comp_tool = ComputerTool(computer=lambda **_: DummyComputer())
resolved = Converter.resolve_computer_tool_model(
request_model=None,
tools=[comp_tool],
)
assert resolved is None
@pytest.mark.parametrize("model", ["gpt-5.4", "gpt-5.5"])
def test_convert_tools_preview_tool_choice_uses_ga_payload_for_ga_model(model: str) -> None:
comp_tool = ComputerTool(computer=lambda **_: DummyComputer())
converted = Converter.convert_tools(
tools=[comp_tool],
handoffs=[],
model=model,
tool_choice="computer_use_preview",
)
assert converted.tools == [{"type": "computer"}]
def test_convert_tools_prompt_managed_computer_respects_explicit_ga_tool_choice() -> None:
comp_tool = ComputerTool(computer=lambda **_: DummyComputer())
converted = Converter.convert_tools(
tools=[comp_tool],
handoffs=[],
model=None,
tool_choice="computer_use",
)
assert converted.tools == [{"type": "computer"}]
def test_convert_tools_prompt_managed_computer_accepts_mcp_tool_choice() -> None:
comp_tool = ComputerTool(computer=DummyComputer())
converted = Converter.convert_tools(
tools=[comp_tool],
handoffs=[],
model=None,
tool_choice=MCPToolChoice(server_label="remote", name="lookup_account"),
)
assert converted.tools == [
{
"type": "computer_use_preview",
"environment": "mac",
"display_width": 800,
"display_height": 600,
}
]