atlas-iac/testing/tests/test_hermes_chat_switchyard.py

484 lines
18 KiB
Python

"""Hermes chat switchyard contracts."""
from __future__ import annotations
from test_hermes_chat_support import (
HERMES,
Path,
SimpleNamespace,
_documents,
_load_broker_module,
base64,
importlib,
json,
pytest,
sys,
time,
tomllib,
)
def test_codex_broker_auth_and_request_contract(tmp_path: Path, monkeypatch):
"""The relay is bounded, stateless, and rejects unapproved models."""
module = _load_broker_module(
"hermes_codex_broker", "codex_broker.py", monkeypatch
)
monkeypatch.setattr(module, "TOKEN", "relay-secret")
assert module._authorized("Bearer relay-secret") is True
assert module._authorized("Bearer wrong") is False
assert module._real_model("route/codex/gpt-5.6-sol/xhigh") == "gpt-5.6-sol"
payload = module._validate_payload(
{
"model": "gpt-5.6-terra",
"input": "route this chat turn",
"store": True,
"stream": False,
"max_output_tokens": 96,
"max_completion_tokens": 96,
"max_tokens": 96,
"temperature": 0.7,
"top_p": 0.9,
}
)
assert payload["store"] is False
assert payload["stream"] is True
assert "max_output_tokens" not in payload
assert "max_completion_tokens" not in payload
assert "max_tokens" not in payload
assert "temperature" not in payload
assert "top_p" not in payload
assert payload["input"] == [
{
"type": "message",
"role": "user",
"content": [{"type": "input_text", "text": "route this chat turn"}],
}
]
response_item = {
"type": "message",
"role": "user",
"content": [{"type": "input_text", "text": "keep this item"}],
}
assert module._validate_payload(
{"model": "gpt-5.6-terra", "input": response_item}
)["input"] == [response_item]
response_items = [response_item]
assert module._validate_payload(
{"model": "gpt-5.6-terra", "input": response_items}
)["input"] is response_items
image_items = [
{
"type": "message",
"role": "user",
"content": [
{"type": "input_text", "text": "What color is this?"},
{
"type": "image_url",
"image_url": {
"url": "data:image/png;base64,cHJpdmF0ZQ==",
"detail": "high",
},
},
],
}
]
assert module._validate_payload(
{"model": "gpt-5.6-terra", "input": image_items}
)["input"][0]["content"][1] == {
"type": "input_image",
"image_url": "data:image/png;base64,cHJpdmF0ZQ==",
"detail": "high",
}
switchyard_image_items = [
{
"role": "user",
"content": [
{"type": "input_text", "text": "What color is this?"},
{
"type": "image_url",
"image_url": {
"url": "data:image/png;base64,cHJpdmF0ZQ==",
"detail": "auto",
},
},
],
}
]
assert module._validate_payload(
{"model": "gpt-5.6-terra", "input": switchyard_image_items}
)["input"][0]["content"][1] == {
"type": "input_image",
"image_url": "data:image/png;base64,cHJpdmF0ZQ==",
"detail": "auto",
}
switchyard_base64_items = [
{
"role": "user",
"content": [
{"type": "input_text", "text": "What color is this?"},
{
"type": "image",
"source": {
"type": "base64",
"media_type": "image/png",
"data": "cHJpdmF0ZQ==",
},
},
],
}
]
normalized_base64 = module._validate_payload(
{"model": "gpt-5.6-terra", "input": switchyard_base64_items}
)["input"][0]["content"][1]
assert normalized_base64 == {
"type": "input_image",
"image_url": "data:image/png;base64,cHJpdmF0ZQ==",
}
switchyard_enum_items = [
{
"role": "user",
"content": [
{
"type": "input_image",
"image_url": {
"type": "url",
"data": {
"url": "data:image/png;base64,cHJpdmF0ZQ==",
"detail": "high",
},
},
}
],
}
]
nested_image = module._validate_payload(
{"model": "gpt-5.6-terra", "input": switchyard_enum_items}
)["input"][0]["content"][0]
assert nested_image["image_url"] == "data:image/png;base64,cHJpdmF0ZQ=="
assert nested_image["detail"] == "high"
with pytest.raises(ValueError, match=r"non-empty Responses image URL.*str\[4\]"):
module._validate_payload(
{
"model": "gpt-5.6-terra",
"input": [
{
"type": "message",
"role": "user",
"content": [
{
"type": "input_image",
"image_url": {"detail": "high"},
}
],
}
],
}
)
routed = module._validate_payload(
{
"model": "route/codex/gpt-5.6-luna/low",
"input": "use the low route",
"stream": False,
}
)
assert routed["model"] == "gpt-5.6-luna"
with pytest.raises(ValueError, match="unsupported Codex model"):
module._validate_payload({"model": "unapproved-model", "input": "hello"})
with pytest.raises(ValueError, match="non-empty Responses input"):
module._validate_payload({"model": "gpt-5.6-terra", "input": ""})
with pytest.raises(ValueError, match="non-empty Responses input list"):
module._validate_payload({"model": "gpt-5.6-terra", "input": []})
completed = {
"id": "resp_test",
"object": "response",
"status": "completed",
"output": [],
}
completed_item = {
"type": "message",
"role": "assistant",
"status": "completed",
"content": [{"type": "output_text", "text": "done"}],
}
assert module._completed_response(
[
"event: response.created",
'data: {"type":"response.created","response":{}}',
"event: response.output_item.done",
"data: "
+ json.dumps(
{
"type": "response.output_item.done",
"output_index": 0,
"item": completed_item,
}
),
"event: response.completed",
"data: "
+ json.dumps({"type": "response.completed", "response": completed}),
"data: [DONE]",
]
)["output"] == [completed_item]
raw_stream = (
"event: response.output_item.done\n"
"data: "
+ json.dumps(
{
"type": "response.output_item.done",
"output_index": 0,
"item": completed_item,
}
)
+ "\n\nevent: response.completed\ndata: "
+ json.dumps({"type": "response.completed", "response": completed})
+ "\n\n"
).encode()
normalized = module._normalized_stream(
raw_stream, {**completed, "output": [completed_item]}
).decode()
terminal_data = next(
line for line in normalized.splitlines() if '"response.completed"' in line
)
assert json.loads(terminal_data.removeprefix("data: "))["response"][
"output"
] == [completed_item]
assert normalized.endswith("\n\n")
streamed_function_item = {
"type": "function_call",
"name": "read_file",
"status": "completed",
"arguments": '{"path":"/tmp"}',
}
streamed_function_body = (
"event: response.function_call_arguments.delta\n"
'data: {"type":"response.function_call_arguments.delta",'
'"item_id":"call_1","delta":"{\\"path\\":\\"/tmp\\"}"}\n\n'
"event: response.function_call_arguments.done\n"
'data: {"type":"response.function_call_arguments.done",'
'"item_id":"call_1","arguments":"{\\"path\\":\\"/tmp\\"}"}\n\n'
"event: response.output_item.done\n"
'data: {"type":"response.output_item.done","output_index":0,'
'"item":{"type":"function_call","name":"read_file",'
'"arguments":"{\\"path\\":\\"/tmp\\"}"}}\n\n'
"event: response.completed\n"
"data: "
+ json.dumps(
{
"type": "response.completed",
"response": {**completed, "output": [streamed_function_item]},
}
)
+ "\n\n"
).encode()
normalized_function_stream = module._normalized_stream(
streamed_function_body, {**completed, "output": [streamed_function_item]}
).decode()
assert "response.function_call_arguments.delta" in normalized_function_stream
assert "response.function_call_arguments.done" not in normalized_function_stream
assert "response.output_item.done" not in normalized_function_stream
normalized_terminal = next(
line
for line in normalized_function_stream.splitlines()
if '"response.completed"' in line
)
assert json.loads(normalized_terminal.removeprefix("data: "))["response"][
"output"
] == []
with pytest.raises(RuntimeError, match="retryable incomplete response"):
module._completed_response(
[
"event: response.incomplete",
'data: {"type":"response.incomplete","response":'
'{"status":"incomplete","incomplete_details":'
'{"reason":"max_output_tokens"}}}',
]
)
with pytest.raises(RuntimeError, match="provider unavailable"):
module._completed_response(
[
"event: error",
'data: {"type":"error","error":{"message":"provider unavailable"}}',
]
)
malformed_tool_item = {
"type": "function_call",
"name": "search_files",
"status": "completed",
"arguments": '{"path":"","offset":',
}
with pytest.raises(RuntimeError, match="malformed function arguments"):
module._completed_response(
[
"event: response.output_item.done",
"data: "
+ json.dumps(
{
"type": "response.output_item.done",
"output_index": 0,
"item": malformed_tool_item,
}
),
"event: response.completed",
"data: "
+ json.dumps({"type": "response.completed", "response": completed}),
]
)
valid_tool_item = {
**malformed_tool_item,
"arguments": '{"path":"","offset":0}',
}
assert module._completed_response(
[
"event: response.output_item.done",
"data: "
+ json.dumps(
{
"type": "response.output_item.done",
"output_index": 0,
"item": valid_tool_item,
}
),
"event: response.completed",
"data: "
+ json.dumps({"type": "response.completed", "response": completed}),
]
)["output"] == [valid_tool_item]
with pytest.raises(RuntimeError, match="malformed function arguments"):
module._completed_response(
[
"event: response.function_call_arguments.delta",
'data: {"type":"response.function_call_arguments.delta",'
'"item_id":"call_1","output_index":0,'
'"delta":"{\\"path\\":\\"/tmp\\",\\"offset\\":"}',
"event: response.completed",
"data: "
+ json.dumps({"type": "response.completed", "response": completed}),
]
)
streamed_tool = module._completed_response(
[
"event: response.function_call_arguments.delta",
'data: {"type":"response.function_call_arguments.delta",'
'"item_id":"call_2","output_index":0,'
'"delta":"{\\"path\\":\\"/tmp\\",\\"offset\\":"}',
"event: response.function_call_arguments.done",
'data: {"type":"response.function_call_arguments.done",'
'"item_id":"call_2","output_index":0,'
'"arguments":"{\\"path\\":\\"/tmp\\",\\"offset\\":0}"}',
"event: response.completed",
"data: "
+ json.dumps({"type": "response.completed", "response": completed}),
]
)
assert streamed_tool["status"] == "completed"
auth_dir = tmp_path / ".codex"
auth_dir.mkdir()
# The token payload need only prove the broker reads CODEX_HOME directly.
encoded = base64.urlsafe_b64encode(
json.dumps({"exp": time.time() + 3600}).encode()
).decode().rstrip("=")
(auth_dir / "auth.json").write_text(
json.dumps({"tokens": {"access_token": f"header.{encoded}.signature"}})
)
monkeypatch.setenv("CODEX_HOME", str(auth_dir))
assert module._access_token().startswith("header.")
def test_classifier_broker_bounds_history_without_losing_routing_intent(monkeypatch):
"""AUTO classification must fit the Jetson context without losing intent."""
broker_path = HERMES / "scripts" / "classifier_broker.py"
monkeypatch.setitem(sys.modules, "httpx", SimpleNamespace())
spec = importlib.util.spec_from_file_location("hermes_classifier_broker", broker_path)
assert spec and spec.loader
module = importlib.util.module_from_spec(spec)
spec.loader.exec_module(module)
payload = {
"model": "qwen2.5:14b-instruct-q4_0",
"messages": [
{
"role": "system",
"content": "routing contract\n" + ("candidate policy " * 1000),
},
{
"role": "user",
"content": "Build and verify the Cassandra release safely.",
},
{
"role": "assistant",
"content": None,
"tool_calls": [
{
"id": "call_large",
"type": "function",
"function": {
"name": "large_tool",
"arguments": '{"command":"' + ("x" * 5000) + '"}',
},
}
],
},
{
"role": "tool",
"content": "unbounded test output " * 10000,
"tool_call_id": "call_large",
},
{
"role": "user",
"content": [
{"type": "image_url", "image_url": {"url": "data:image/png;base64,private"}},
{"type": "text", "text": "Turn this cat into a cute clown."},
],
},
],
"tools": [{"type": "function", "function": {"name": "large_tool"}}],
"tool_choice": "auto",
"parallel_tool_calls": True,
"response_format": {"type": "json_object"},
}
compacted = module.compact_payload(payload)
encoded = json.dumps(compacted)
assert compacted["model"] == payload["model"]
assert compacted["response_format"] == payload["response_format"]
assert "tools" not in compacted
assert "tool_choice" not in compacted
assert "parallel_tool_calls" not in compacted
assert all(message.get("role") != "tool" for message in compacted["messages"])
assert all("tool_call_id" not in message for message in compacted["messages"])
assert all("tool_calls" not in message for message in compacted["messages"])
assert "[tool evidence]" in encoded
assert "[assistant requested an external tool]" in encoded
assert "Build and verify the Cassandra release safely." in encoded
assert "Turn this cat into a cute clown." in encoded
assert "image attachment available to the selected worker" in encoded
assert "data:image/png;base64" not in encoded
assert "unbounded test output " * 100 not in encoded
assert len(encoded) < 18_000
def test_switchyard_classifier_is_bounded_and_fails_open_once():
"""A sick local judge must not hold chat through repeated long retries."""
config = tomllib.loads(
_documents(HERMES / "switchyard-configmap.yaml")[0]["data"]["routes.toml"]
)
classifier = config["llm_clients"]["classifier"]
assert classifier["base_url"] == "http://127.0.0.1:9008/v1"
assert classifier["max_retries"] == 0
for route in ("auto_fast", "auto_balanced"):
assert config["routes"][route]["recent_turn_window"] == 4
for route in ("auto_deep", "auto_maximum", "worker_auto_maximum"):
assert config["routes"][route]["recent_turn_window"] == 6
deployment = _documents(HERMES / "switchyard-deployment.yaml")[0]
containers = {
item["name"]: item
for item in deployment["spec"]["template"]["spec"]["containers"]
}
classifier_container = containers["classifier-broker"]
env = {item["name"]: item["value"] for item in classifier_container["env"]}
assert env["HERMES_CLASSIFIER_BROKER_READ_TIMEOUT"] == "60"
assert classifier_container["readinessProbe"]["httpGet"]["port"] == "classifier"