mirror of
https://github.com/andrewyng/openworker.git
synced 2026-09-03 04:49:26 +00:00
Rohit C Prasad
d10990bdf7
Vendor MCP schemas with type: [a, b] failed SDK validation and killed every Gemini turn. Null unions become nullable; multi-type unions become anyOf.
700 lines
24 KiB
Python
700 lines
24 KiB
Python
"""Native Gemini provider — message/tool conversion, complete(), stream(). SDK-free:
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the fake client mimics the `google-genai` SDK's `models.generate_content[_stream]` surface
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with SimpleNamespace objects, the same pattern the Anthropic provider tests use."""
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from __future__ import annotations
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from types import SimpleNamespace
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import pytest
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from coworker.providers import GeminiProvider, capabilities_for
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from coworker.providers.gemini_provider import (
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_sanitize_schema,
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convert_messages,
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convert_tools,
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)
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# -- fakes ------------------------------------------------------------------------
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class _FakeClient:
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"""Records the kwargs passed to generate_content / generate_content_stream and returns a
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canned response (or chunk iterator)."""
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def __init__(self, response=None, chunks=None):
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self.kwargs: dict = {}
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def generate_content(**kwargs):
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self.kwargs = kwargs
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return response
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def generate_content_stream(**kwargs):
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self.kwargs = kwargs
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return iter(chunks or [])
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self.models = SimpleNamespace(
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generate_content=generate_content,
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generate_content_stream=generate_content_stream,
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)
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def _response(parts, finish_reason="STOP"):
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return SimpleNamespace(
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candidates=[
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SimpleNamespace(
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content=SimpleNamespace(parts=parts),
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finish_reason=finish_reason,
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)
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]
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)
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def _text_part(text):
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return SimpleNamespace(text=text, function_call=None)
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def _call_part(name, args):
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return SimpleNamespace(
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text=None, function_call=SimpleNamespace(name=name, args=args)
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)
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# -- message conversion -------------------------------------------------------------
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def test_convert_extracts_leading_system():
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system, contents = convert_messages(
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[
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{"role": "system", "content": "be helpful"},
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{"role": "user", "content": "hi"},
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]
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)
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assert system == "be helpful"
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assert contents == [{"role": "user", "parts": [{"text": "hi"}]}]
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def test_convert_assistant_tool_turn_maps_role_model():
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# Pure tool turns (content="") must not leak an empty text part; role becomes "model".
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_, contents = convert_messages(
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[
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{"role": "user", "content": "do it"},
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{
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"role": "assistant",
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"content": "",
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"tool_calls": [
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{
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"id": "call_0",
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"type": "function",
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"function": {"name": "f", "arguments": '{"x": 1}'},
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}
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],
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},
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]
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)
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assert contents[1]["role"] == "model"
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assert contents[1]["parts"] == [{"function_call": {"name": "f", "args": {"x": 1}}}]
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def test_convert_tool_results_map_id_to_name_and_merge():
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# Function calls have no wire ids: results must map back to the function NAME, and a run
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# of parallel results must fold into ONE user message.
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_, contents = convert_messages(
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[
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{"role": "user", "content": "go"},
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{
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"role": "assistant",
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"content": "",
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"tool_calls": [
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{
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"id": "call_0",
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"type": "function",
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"function": {"name": "a", "arguments": "{}"},
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},
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{
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"id": "call_1",
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"type": "function",
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"function": {"name": "b", "arguments": "{}"},
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},
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],
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},
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{"role": "tool", "tool_call_id": "call_0", "content": '{"ok": true}'},
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{"role": "tool", "tool_call_id": "call_1", "content": "plain text"},
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]
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)
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assert [c["role"] for c in contents] == ["user", "model", "user"]
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responses = [p["function_response"] for p in contents[2]["parts"]]
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assert responses[0] == {
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"name": "a",
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"response": {"ok": True},
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} # JSON result passes through
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assert responses[1] == {
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"name": "b",
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"response": {"result": "plain text"},
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} # string wrapped
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def test_convert_repeated_ids_resolve_to_latest_turn():
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# Synthesized ids restart at call_0 each turn; a result always follows its own assistant
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# turn, so the forward-walking map must resolve to the LATEST name for a reused id.
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_, contents = convert_messages(
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[
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{"role": "user", "content": "go"},
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{
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"role": "assistant",
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"content": "",
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"tool_calls": [
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{"id": "call_0", "function": {"name": "first", "arguments": "{}"}}
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],
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},
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{"role": "tool", "tool_call_id": "call_0", "content": "r1"},
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{
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"role": "assistant",
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"content": "",
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"tool_calls": [
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{"id": "call_0", "function": {"name": "second", "arguments": "{}"}}
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],
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},
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{"role": "tool", "tool_call_id": "call_0", "content": "r2"},
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]
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)
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names = [
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p["function_response"]["name"]
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for c in contents
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for p in c["parts"]
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if "function_response" in p
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]
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assert names == ["first", "second"]
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def test_convert_steering_user_message_merges_after_tool_results():
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_, contents = convert_messages(
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[
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{"role": "user", "content": "go"},
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{
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"role": "assistant",
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"content": "",
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"tool_calls": [
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{"id": "c1", "function": {"name": "a", "arguments": "{}"}}
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],
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},
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{"role": "tool", "tool_call_id": "c1", "content": "r1"},
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{"role": "user", "content": "actually, stop"},
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]
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)
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parts = contents[2]["parts"]
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assert "function_response" in parts[0]
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assert parts[1] == {"text": "actually, stop"}
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def test_convert_image_data_url_to_inline_data():
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_, contents = convert_messages(
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[
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{
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"role": "user",
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"content": [
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{"type": "text", "text": "what is this"},
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{
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"type": "image_url",
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"image_url": {"url": "data:image/png;base64,iVBORw0KGgo="},
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},
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],
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}
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]
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)
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assert contents[0]["parts"][1] == {
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"inline_data": {"mime_type": "image/png", "data": "iVBORw0KGgo="}
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}
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def test_convert_non_data_image_url_becomes_placeholder():
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_, contents = convert_messages(
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[
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{
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"role": "user",
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"content": [
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{"type": "image_url", "image_url": {"url": "https://x/y.png"}}
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],
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}
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]
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)
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assert contents[0]["parts"] == [{"text": "[unsupported image attachment]"}]
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def test_convert_guards_first_user_and_empty_history():
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_, contents = convert_messages([{"role": "assistant", "content": "hi"}])
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assert contents[0] == {"role": "user", "parts": [{"text": "(continued)"}]}
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with pytest.raises(ValueError):
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convert_messages([{"role": "assistant", "content": ""}])
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# -- tool schema conversion ----------------------------------------------------------
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def test_convert_tools_wraps_function_declarations():
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tools = convert_tools(
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[
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{"type": "function", "function": {"name": "bare"}},
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{
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"type": "function",
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"function": {
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"name": "full",
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"description": "does things",
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"parameters": {
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"type": "object",
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"properties": {"x": {"type": "integer"}},
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},
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},
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},
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]
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)
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assert len(tools) == 1
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declarations = tools[0]["function_declarations"]
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assert declarations[0] == {
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"name": "bare"
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} # parameter-less: no `parameters` key at all
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assert declarations[1]["description"] == "does things"
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assert declarations[1]["parameters"]["properties"] == {"x": {"type": "integer"}}
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assert convert_tools(None) == []
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def test_sanitize_schema_strips_unsupported_keys():
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schema = {
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"type": "object",
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"$schema": "http://json-schema.org/draft-07/schema#",
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"additionalProperties": False,
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"properties": {
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"items": {
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"type": "array",
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"items": {
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"type": "object",
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"additionalProperties": True,
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"properties": {"x": {"type": "string", "examples": ["a"]}},
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},
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}
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},
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"required": ["items"],
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}
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cleaned = _sanitize_schema(schema)
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assert "$schema" not in cleaned and "additionalProperties" not in cleaned
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inner = cleaned["properties"]["items"]["items"]
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assert "additionalProperties" not in inner
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assert "examples" not in inner["properties"]["x"]
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assert cleaned["required"] == ["items"]
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# -- complete() ----------------------------------------------------------------------
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def test_complete_text_turn():
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fake = _FakeClient(response=_response([_text_part("hello")]))
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provider = GeminiProvider(client=fake)
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turn = provider.complete(
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model="gemini-2.5-flash",
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messages=[
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{"role": "system", "content": "sys"},
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{"role": "user", "content": "hi"},
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],
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)
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assert (
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turn.text == "hello"
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and turn.finish_reason == "stop"
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and not turn.has_tool_calls
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)
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assert fake.kwargs["model"] == "gemini-2.5-flash"
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assert fake.kwargs["config"]["system_instruction"] == "sys"
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assert "tools" not in fake.kwargs["config"]
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def test_complete_parses_function_calls_with_synthesized_ids():
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fake = _FakeClient(
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response=_response(
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[
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_text_part("on it"),
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_call_part("write_file", {"path": "a.txt"}),
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_call_part("read_file", {"path": "b"}),
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]
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)
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)
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provider = GeminiProvider(client=fake)
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turn = provider.complete(model="m", messages=[{"role": "user", "content": "go"}])
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assert turn.text == "on it"
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assert turn.finish_reason == "tool_calls" # STOP + function calls → tool_calls
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assert [(c.id, c.name) for c in turn.tool_calls] == [
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("call_0", "write_file"),
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("call_1", "read_file"),
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]
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assert turn.tool_calls[0].arguments == {"path": "a.txt"}
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@pytest.mark.parametrize(
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"finish,expected",
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[
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("STOP", "stop"),
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("MAX_TOKENS", "length"),
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("SAFETY", "stop"),
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("WEIRD_NEW", "weird_new"),
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],
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)
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def test_complete_maps_finish_reasons(finish, expected):
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provider = GeminiProvider(
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client=_FakeClient(response=_response([_text_part("x")], finish_reason=finish))
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)
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turn = provider.complete(model="m", messages=[{"role": "user", "content": "x"}])
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assert turn.finish_reason == expected
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def test_complete_filters_and_aliases_settings():
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fake = _FakeClient(response=_response([_text_part("x")]))
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provider = GeminiProvider(client=fake)
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provider.complete(
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model="m",
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messages=[{"role": "user", "content": "x"}],
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temperature=0.2,
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max_tokens=512, # OpenAI alias → max_output_tokens
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stop="END", # OpenAI alias → stop_sequences
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frequency_penalty=0.5, # not a Gemini param → dropped
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)
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config = fake.kwargs["config"]
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assert config["temperature"] == 0.2
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assert config["max_output_tokens"] == 512
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assert config["stop_sequences"] == ["END"]
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assert (
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"frequency_penalty" not in config
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and "stop" not in config
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and "max_tokens" not in config
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)
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def test_complete_passes_converted_tools_in_config():
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fake = _FakeClient(response=_response([_text_part("x")]))
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provider = GeminiProvider(client=fake)
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provider.complete(
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model="m",
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messages=[{"role": "user", "content": "x"}],
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tools=[
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{
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"type": "function",
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"function": {
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"name": "f",
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"parameters": {
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"type": "object",
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"properties": {"a": {"type": "string"}},
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},
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},
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}
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],
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)
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declarations = fake.kwargs["config"]["tools"][0]["function_declarations"]
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assert declarations[0]["name"] == "f"
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def test_ensure_client_without_key_raises(monkeypatch):
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monkeypatch.delenv("GEMINI_API_KEY", raising=False)
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monkeypatch.delenv("GOOGLE_API_KEY", raising=False)
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with pytest.raises(RuntimeError, match="Gemini"):
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GeminiProvider()._ensure_client()
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# -- stream() ------------------------------------------------------------------------
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def test_stream_yields_text_deltas_then_final_turn():
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chunks = [
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_response([_text_part("hel")], finish_reason=None),
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_response([_text_part("lo")], finish_reason="STOP"),
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]
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provider = GeminiProvider(client=_FakeClient(chunks=chunks))
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out = list(provider.stream(model="m", messages=[{"role": "user", "content": "x"}]))
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assert [c.text_delta for c in out[:-1]] == ["hel", "lo"]
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final = out[-1].turn
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assert (
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final.text == "hello"
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and final.finish_reason == "stop"
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and not final.has_tool_calls
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)
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def test_stream_collects_function_calls_across_chunks():
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chunks = [
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_response([_text_part("working")], finish_reason=None),
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_response([_call_part("f", {"x": 1})], finish_reason=None),
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_response([_call_part("g", {})], finish_reason="STOP"),
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]
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provider = GeminiProvider(client=_FakeClient(chunks=chunks))
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out = list(provider.stream(model="m", messages=[{"role": "user", "content": "x"}]))
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final = out[-1].turn
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assert final.finish_reason == "tool_calls"
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assert [(c.id, c.name) for c in final.tool_calls] == [
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("call_0", "f"),
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("call_1", "g"),
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]
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assert final.tool_calls[0].arguments == {"x": 1}
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def test_stream_handles_enum_like_finish_reason():
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# the SDK's finish_reason is an enum with a .name; fakes may pass a plain string
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chunks = [
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_response([_text_part("x")], finish_reason=SimpleNamespace(name="MAX_TOKENS"))
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]
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provider = GeminiProvider(client=_FakeClient(chunks=chunks))
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final = list(
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provider.stream(model="m", messages=[{"role": "user", "content": "x"}])
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)[-1].turn
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assert final.finish_reason == "length"
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# -- registry / capabilities ----------------------------------------------------------
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def test_registry_builds_native_gemini_provider():
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from coworker.providers.registry import build_provider_client
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provider = build_provider_client("gemini", {"api_key": "AIza-x"}, None)
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assert isinstance(provider, GeminiProvider)
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assert provider._api_key == "AIza-x"
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# no key in the profile is fine at build time — resolution is deferred to first call
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assert isinstance(build_provider_client("gemini", {}, None), GeminiProvider)
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def test_resolve_api_key_env_then_secrets(monkeypatch):
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from coworker.providers.gemini_provider import resolve_api_key
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monkeypatch.setenv("GEMINI_API_KEY", "AIza-env")
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assert resolve_api_key() == "AIza-env"
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monkeypatch.delenv("GEMINI_API_KEY")
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monkeypatch.setenv("GOOGLE_API_KEY", "AIza-google") # the SDK's own env convention
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assert resolve_api_key() == "AIza-google"
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monkeypatch.delenv("GOOGLE_API_KEY")
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class _Secrets:
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def get(self, name):
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return {"api_key": "AIza-stored"} if name == "provider:gemini" else None
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assert resolve_api_key(_Secrets()) == "AIza-stored"
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assert resolve_api_key(None) is None
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def test_gemini_capabilities_parallel_tool_calls():
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caps = capabilities_for("gemini:gemini-2.5-flash")
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assert caps.tools and caps.vision and caps.streaming
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assert caps.parallel_tool_calls is True # native provider folds results correctly
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def test_convert_pdf_file_part_to_inline_data():
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from coworker.providers.gemini_provider import _user_parts
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parts = _user_parts(
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[
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{"type": "text", "text": "summarize"},
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{
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"type": "file",
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"file": {
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"filename": "report.pdf",
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"file_data": "data:application/pdf;base64,JVBERi0=",
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},
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},
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{"type": "file", "file": {"file_data": "not-a-url"}},
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]
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)
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assert parts[1] == {
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"inline_data": {"mime_type": "application/pdf", "data": "JVBERi0="}
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}
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assert parts[2] == {"text": "[unsupported file attachment]"}
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# -- Gemini 3 thought signatures (2026-07 roadmap item 2) ---------------------------
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def _sig_call_part(name, args, sig):
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return SimpleNamespace(
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text=None,
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function_call=SimpleNamespace(name=name, args=args),
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thought_signature=sig,
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)
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def _thought_part(text, sig=None):
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return SimpleNamespace(
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text=text, function_call=None, thought=True, thought_signature=sig
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)
|
|
|
|
|
|
def test_complete_captures_signatures_and_filters_thought_parts():
|
|
response = _response(
|
|
[
|
|
_thought_part("secret reasoning", sig=b"tsig"),
|
|
SimpleNamespace(text="the answer", function_call=None, thought_signature=None),
|
|
_sig_call_part("run_shell", {"command": "ls"}, b"csig"),
|
|
]
|
|
)
|
|
provider = GeminiProvider(client=_FakeClient(response=response))
|
|
turn = provider.complete(model="m", messages=[{"role": "user", "content": "x"}])
|
|
|
|
assert turn.text == "the answer" # thought text never leaks into the answer
|
|
assert turn.tool_calls[0].name == "run_shell"
|
|
import base64
|
|
|
|
sidecar = turn.extras["_gemini"]
|
|
assert sidecar["text_sig"] == base64.b64encode(b"tsig").decode()
|
|
assert sidecar["call_sigs"] == [base64.b64encode(b"csig").decode()]
|
|
|
|
|
|
def test_complete_without_signatures_has_no_extras():
|
|
response = _response([_text_part("plain")])
|
|
provider = GeminiProvider(client=_FakeClient(response=response))
|
|
turn = provider.complete(model="m", messages=[{"role": "user", "content": "x"}])
|
|
assert turn.extras == {}
|
|
|
|
|
|
def test_stream_accumulates_signatures_across_chunks():
|
|
chunks = [
|
|
_response([_text_part("hi ")], finish_reason=None),
|
|
_response([_sig_call_part("t1", {}, b"s1")], finish_reason=None),
|
|
_response([_sig_call_part("t2", {}, None)], finish_reason="STOP"),
|
|
]
|
|
provider = GeminiProvider(client=_FakeClient(chunks=chunks))
|
|
final = list(provider.stream(model="m", messages=[{"role": "user", "content": "x"}]))[-1].turn
|
|
import base64
|
|
|
|
assert [c.name for c in final.tool_calls] == ["t1", "t2"]
|
|
assert final.extras["_gemini"]["call_sigs"] == [
|
|
base64.b64encode(b"s1").decode(),
|
|
None,
|
|
]
|
|
|
|
|
|
def test_convert_reattaches_signatures_to_parts():
|
|
system, contents = convert_messages(
|
|
[
|
|
{"role": "user", "content": "do it"},
|
|
{
|
|
"role": "assistant",
|
|
"content": "on it",
|
|
"_gemini": {"text_sig": "dHNpZw==", "call_sigs": [None, "Y3NpZw=="]},
|
|
"tool_calls": [
|
|
{"id": "call_0", "type": "function", "function": {"name": "a", "arguments": "{}"}},
|
|
{"id": "call_1", "type": "function", "function": {"name": "b", "arguments": "{}"}},
|
|
],
|
|
},
|
|
]
|
|
)
|
|
parts = contents[-1]["parts"]
|
|
assert parts[0] == {"text": "on it", "thought_signature": "dHNpZw=="}
|
|
assert "thought_signature" not in parts[1] # first call had no signature
|
|
assert parts[2]["function_call"]["name"] == "b"
|
|
assert parts[2]["thought_signature"] == "Y3NpZw=="
|
|
|
|
|
|
def test_convert_signature_parts_validate_as_sdk_types():
|
|
"""The dict parts we emit (base64-string signatures) must round-trip through the real
|
|
SDK Part model — its base64 bytes-validation is what decodes them on send."""
|
|
types_mod = pytest.importorskip("google.genai.types")
|
|
_, contents = convert_messages(
|
|
[
|
|
{"role": "user", "content": "go"},
|
|
{
|
|
"role": "assistant",
|
|
"content": "",
|
|
"_gemini": {"text_sig": None, "call_sigs": ["c2ln"]},
|
|
"tool_calls": [
|
|
{"id": "call_0", "type": "function", "function": {"name": "a", "arguments": "{}"}},
|
|
],
|
|
},
|
|
]
|
|
)
|
|
part = types_mod.Part.model_validate(contents[-1]["parts"][0])
|
|
assert part.thought_signature == b"sig"
|
|
|
|
|
|
def test_thought_summaries_requested_and_surfaced_as_reasoning():
|
|
response = _response(
|
|
[
|
|
_thought_part("plotting a plan", sig=None),
|
|
SimpleNamespace(text="the answer", function_call=None, thought_signature=None),
|
|
]
|
|
)
|
|
client = _FakeClient(response=response)
|
|
provider = GeminiProvider(client=client)
|
|
turn = provider.complete(model="gemini-3.6-flash", messages=[{"role": "user", "content": "x"}])
|
|
|
|
# We ask for summaries on every gemini-* model…
|
|
assert client.kwargs["config"]["thinking_config"] == {"include_thoughts": True}
|
|
# …and thought parts land as reasoning, never as answer text.
|
|
assert turn.text == "the answer" and turn.reasoning == "plotting a plan"
|
|
|
|
|
|
def test_stream_yields_reasoning_deltas_for_thought_parts():
|
|
chunks = [
|
|
_response([_thought_part("mull ")], finish_reason=None),
|
|
_response([_thought_part("it over")], finish_reason=None),
|
|
_response([_text_part("done")], finish_reason="STOP"),
|
|
]
|
|
provider = GeminiProvider(client=_FakeClient(chunks=chunks))
|
|
out = list(provider.stream(model="gemini-3.6-flash", messages=[{"role": "user", "content": "x"}]))
|
|
assert [c.reasoning_delta for c in out if c.reasoning_delta] == ["mull ", "it over"]
|
|
final = out[-1].turn
|
|
assert final.text == "done" and final.reasoning == "mull it over"
|
|
|
|
|
|
def test_sanitize_coerces_union_types():
|
|
"""Vendor MCP schemas use JSON-Schema union types (owner-hit 2026-07-23: monday's
|
|
compareValue `type: ['string','number']` 400'd every Gemini turn). Nullable unions
|
|
become `nullable`, multi-type unions become anyOf."""
|
|
cleaned = _sanitize_schema(
|
|
{
|
|
"type": "object",
|
|
"properties": {
|
|
"compareValue": {
|
|
"anyOf": [
|
|
{"type": "string"},
|
|
{"type": "array", "items": {"type": ["string", "number"]}},
|
|
]
|
|
},
|
|
"maybe": {"type": ["string", "null"]},
|
|
"nothing": {"type": ["null"]},
|
|
},
|
|
}
|
|
)
|
|
items = cleaned["properties"]["compareValue"]["anyOf"][1]["items"]
|
|
assert items == {"anyOf": [{"type": "string"}, {"type": "number"}]}
|
|
assert cleaned["properties"]["maybe"] == {"type": "string", "nullable": True}
|
|
assert cleaned["properties"]["nothing"] == {"nullable": True}
|
|
|
|
|
|
def test_union_type_schema_validates_as_sdk_config():
|
|
"""The exact failing shape must pass the SDK's GenerateContentConfig validation."""
|
|
types_mod = pytest.importorskip("google.genai.types")
|
|
tools = convert_tools(
|
|
[
|
|
{
|
|
"type": "function",
|
|
"function": {
|
|
"name": "mcp__monday__search",
|
|
"parameters": {
|
|
"type": "object",
|
|
"properties": {
|
|
"filters": {
|
|
"type": "array",
|
|
"items": {
|
|
"type": "object",
|
|
"properties": {
|
|
"compareValue": {
|
|
"anyOf": [
|
|
{"type": "string"},
|
|
{"type": "number"},
|
|
{"type": "array", "items": {"type": "string"}},
|
|
{"type": "array", "items": {"type": ["string", "number"]}},
|
|
]
|
|
}
|
|
},
|
|
},
|
|
}
|
|
},
|
|
},
|
|
},
|
|
}
|
|
]
|
|
)
|
|
config = types_mod.GenerateContentConfig.model_validate({"tools": tools})
|
|
assert config.tools
|