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Python

"""Tests for prompt-scoped remote session state helpers."""
from __future__ import annotations
from typing import Any
import pytest
def test_remote_session_store_round_trips_value_refs(session_state_module: Any) -> None:
"""Stored remote-only outputs should round-trip through opaque session refs."""
handle = session_state_module.RemoteSessionHandle(
session_id="session-1",
prompt_id="prompt-1",
owner_component_id="component-1",
)
store = session_state_module.InMemoryRemoteSessionStore()
ref = store.put_output(
handle,
node_id="node-7",
output_index=0,
value={"remote": "value"},
)
assert store.get_output(ref) == {"remote": "value"}
assert store.resolve_value(ref.to_payload()) == {"remote": "value"}
def test_remote_session_store_clear_session_invalidates_refs(session_state_module: Any) -> None:
"""Clearing a prompt-scoped session should invalidate every ref stored inside it."""
handle = session_state_module.RemoteSessionHandle(
session_id="session-2",
prompt_id="prompt-2",
owner_component_id="component-2",
)
store = session_state_module.InMemoryRemoteSessionStore()
ref = store.put_output(
handle,
node_id="node-9",
output_index=1,
value="secret",
)
store.clear_session(handle)
with pytest.raises(session_state_module.RemoteSessionStateError):
store.get_output(ref)
def test_remote_session_store_logs_reuse_resolution_and_cleanup(
session_state_module: Any,
monkeypatch: Any,
) -> None:
"""Session observability logs should cover reuse, ref resolution, and cleanup."""
handle = session_state_module.RemoteSessionHandle(
session_id="session-3",
prompt_id="prompt-3",
owner_component_id="component-3",
)
store = session_state_module.InMemoryRemoteSessionStore()
observed_messages: list[str] = []
def capture_log(message: str, *args: Any, **kwargs: Any) -> None:
"""Record one formatted session log line."""
del kwargs
observed_messages.append(message % args if args else message)
monkeypatch.setattr(session_state_module.logger, "info", capture_log)
store.ensure_session(handle)
store.ensure_session(handle)
ref = store.put_output(
handle,
node_id="node-11",
output_index=0,
value="payload",
)
assert store.resolve_value(ref.to_payload()) == "payload"
store.clear_session(handle)
assert any("Created remote session session_id=session-3" in message for message in observed_messages)
assert any("Reusing remote session session_id=session-3" in message for message in observed_messages)
assert any(
"Stored remote session value session_id=session-3 node_id=node-11 output_index=0" in message
for message in observed_messages
)
assert any(
"Resolving remote session ref session_id=session-3 node_id=node-11 output_index=0" in message
for message in observed_messages
)
assert any(
"Resolved remote session value session_id=session-3 node_id=node-11 output_index=0" in message
for message in observed_messages
)
assert any("Cleared remote session session_id=session-3" in message for message in observed_messages)
def test_stable_session_bridge_key_ignores_transient_session_ids(
session_state_module: Any,
) -> None:
"""Durable bridge keys should stay stable across prompt-scoped session id changes."""
first_key = session_state_module.stable_session_bridge_key(
producer_payload={"component_id": "1"},
producer_inputs={
"model": session_state_module.RemoteSessionBridgeRef(
bridge_key="RSB_upstream",
node_id="2",
output_index=0,
session_id="session-a",
).to_payload()
},
node_id="3",
output_index=0,
)
second_key = session_state_module.stable_session_bridge_key(
producer_payload={"component_id": "1"},
producer_inputs={
"model": session_state_module.RemoteSessionBridgeRef(
bridge_key="RSB_upstream",
node_id="2",
output_index=0,
session_id="session-b",
).to_payload()
},
node_id="3",
output_index=0,
)
assert first_key == second_key
def test_remote_session_bridge_record_round_trips_object_refs(
session_state_module: Any,
) -> None:
"""Bridge metadata should preserve object-backed producer inputs and outputs."""
producer_inputs_object = session_state_module.DurableObjectRef(
object_path="bridge_objects/aa/inputs.bin",
sha256="a" * 64,
size_bytes=10,
)
serialized_output_object = session_state_module.DurableObjectRef(
object_path="bridge_objects/bb/output.bin",
sha256="b" * 64,
size_bytes=20,
)
record = session_state_module.RemoteSessionBridgeRecord(
bridge_key="RSB_object_backed",
node_id="node-1",
output_index=0,
producer_payload={"component_id": "component-1"},
producer_inputs={},
recovery_kind=(
session_state_module.RemoteSessionBridgeRecoveryKind.PRODUCER_REPLAY
),
producer_inputs_retained=True,
producer_inputs_object=producer_inputs_object,
serialized_output_object=serialized_output_object,
serialized_output_io_type="LATENT",
)
restored = session_state_module.RemoteSessionBridgeRecord.from_payload(
record.to_payload()
)
assert restored == record
def test_remote_session_bridge_record_accepts_legacy_recovery_metadata(
session_state_module: Any,
) -> None:
"""Records created before recovery policies should remain readable."""
record = session_state_module.RemoteSessionBridgeRecord(
bridge_key="RSB_legacy",
node_id="node-1",
output_index=0,
producer_payload={"component_id": "component-1"},
producer_inputs={"value": 1},
)
payload = record.to_payload()
payload.pop("recovery_kind")
payload.pop("producer_inputs_retained")
restored = session_state_module.RemoteSessionBridgeRecord.from_payload(payload)
assert restored.recovery_kind is None
assert restored.producer_inputs_retained is None
assert restored.producer_inputs == {"value": 1}
def test_remote_session_store_resolves_bridge_refs_via_replay_callback(
session_state_module: Any,
) -> None:
"""Durable bridge refs should rehydrate into the target session when the source is gone."""
store = session_state_module.InMemoryRemoteSessionStore()
target_handle = session_state_module.RemoteSessionHandle(
session_id="session-target",
prompt_id="prompt-1",
owner_component_id="component-1",
)
bridge_ref = session_state_module.RemoteSessionBridgeRef(
bridge_key="RSB_bridge",
node_id="node-7",
output_index=0,
session_id="session-source",
)
observed_bridge_keys: list[str] = []
def bridge_resolver(ref: Any) -> str:
"""Populate the target session and return the replayed value."""
observed_bridge_keys.append(ref.bridge_key)
store.put_bridge_output(
target_handle,
bridge_key=ref.bridge_key,
node_id=ref.node_id,
output_index=ref.output_index,
value="rehydrated-value",
)
return "rehydrated-value"
assert (
store.resolve_value_with_bridges(
bridge_ref.to_payload(),
target_session_handle=target_handle,
bridge_resolver=bridge_resolver,
)
== "rehydrated-value"
)
assert observed_bridge_keys == ["RSB_bridge"]
assert (
store.resolve_value_with_bridges(
bridge_ref.to_payload(),
target_session_handle=target_handle,
bridge_resolver=bridge_resolver,
)
== "rehydrated-value"
)
assert observed_bridge_keys == ["RSB_bridge"]
def test_remote_session_store_resolves_same_output_bridge_refs_by_bridge_key(
session_state_module: Any,
) -> None:
"""Different bridge keys from the same node output must not collapse to the first value."""
store = session_state_module.InMemoryRemoteSessionStore()
target_handle = session_state_module.RemoteSessionHandle(
session_id="session-target",
prompt_id="prompt-1",
owner_component_id="component-1",
)
first_ref = session_state_module.RemoteSessionBridgeRef(
bridge_key="RSB_first",
node_id="508",
output_index=0,
session_id="session-source",
)
second_ref = session_state_module.RemoteSessionBridgeRef(
bridge_key="RSB_second",
node_id="508",
output_index=0,
session_id="session-source",
)
values_by_bridge_key = {
"RSB_first": "conditioning-a",
"RSB_second": "conditioning-b",
}
observed_bridge_keys: list[str] = []
def bridge_resolver(ref: Any) -> str:
"""Populate the target session using the bridge key, as remote rehydration does."""
observed_bridge_keys.append(ref.bridge_key)
value = values_by_bridge_key[ref.bridge_key]
store.put_bridge_output(
target_handle,
bridge_key=ref.bridge_key,
node_id=ref.node_id,
output_index=ref.output_index,
value=value,
)
return value
assert store.resolve_value_with_bridges(
[first_ref.to_payload(), second_ref.to_payload()],
target_session_handle=target_handle,
bridge_resolver=bridge_resolver,
) == ["conditioning-a", "conditioning-b"]
assert observed_bridge_keys == ["RSB_first", "RSB_second"]
assert store.resolve_value_with_bridges(
[first_ref.to_payload(), second_ref.to_payload()],
target_session_handle=target_handle,
bridge_resolver=bridge_resolver,
) == ["conditioning-a", "conditioning-b"]
assert observed_bridge_keys == ["RSB_first", "RSB_second"]
def test_remote_session_store_does_not_resolve_bridge_refs_by_ambiguous_node_slot(
session_state_module: Any,
) -> None:
"""Bridge refs from mapped same-node outputs must not use the overwritten node slot."""
store = session_state_module.InMemoryRemoteSessionStore()
source_handle = session_state_module.RemoteSessionHandle(
session_id="session-source",
prompt_id="prompt-1",
owner_component_id="component-1",
)
target_handle = session_state_module.RemoteSessionHandle(
session_id="session-target",
prompt_id="prompt-1",
owner_component_id="component-1",
)
first_ref = session_state_module.RemoteSessionBridgeRef(
bridge_key="RSB_first",
node_id="508",
output_index=0,
session_id=source_handle.session_id,
)
store.put_output(
source_handle,
node_id=first_ref.node_id,
output_index=first_ref.output_index,
value="conditioning-b",
)
observed_bridge_keys: list[str] = []
def bridge_resolver(ref: Any) -> str:
"""Return the durable bridge value instead of the ambiguous source node slot."""
observed_bridge_keys.append(ref.bridge_key)
return "conditioning-a"
assert store.resolve_value_with_bridges(
first_ref.to_payload(),
target_session_handle=target_handle,
bridge_resolver=bridge_resolver,
) == "conditioning-a"
assert observed_bridge_keys == ["RSB_first"]
def test_remote_session_store_resolves_nested_bridge_ref_lists(
session_state_module: Any,
) -> None:
"""Bridge refs nested inside list outputs should resolve item by item."""
store = session_state_module.InMemoryRemoteSessionStore()
source_handle = session_state_module.RemoteSessionHandle(
session_id="session-source",
prompt_id="prompt-1",
owner_component_id="component-1",
)
first_ref = store.put_bridge_output(
source_handle,
bridge_key="RSB_a",
node_id="node-7:item:0",
output_index=0,
value="conditioning-a",
)
second_ref = store.put_bridge_output(
source_handle,
bridge_key="RSB_b",
node_id="node-7:item:1",
output_index=0,
value="conditioning-b",
)
nested_refs = [
session_state_module.RemoteSessionBridgeRef(
bridge_key="RSB_a",
node_id=first_ref.node_id,
output_index=first_ref.output_index,
session_id=first_ref.session_id,
).to_payload(),
session_state_module.RemoteSessionBridgeRef(
bridge_key="RSB_b",
node_id=second_ref.node_id,
output_index=second_ref.output_index,
session_id=second_ref.session_id,
).to_payload(),
]
assert store.resolve_value_with_bridges(nested_refs) == [
"conditioning-a",
"conditioning-b",
]