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hermes-webui/tests/test_webui_lineage_display_merge.py
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Python

from types import SimpleNamespace
import api.routes as routes
def _msg(role, content, ts):
return {"role": role, "content": content, "timestamp": ts}
def test_webui_lineage_display_merge_includes_parent_only_rows(monkeypatch):
parent = SimpleNamespace(
session_id="parent",
messages=[
_msg("user", "first prompt", 1),
_msg("assistant", "first answer", 2),
_msg("user", "parent only prompt", 3),
_msg("assistant", "parent only answer", 4),
],
)
tip = SimpleNamespace(
session_id="tip",
parent_session_id="parent",
session_source="webui",
messages=[
_msg("user", "first prompt", 1),
_msg("assistant", "first answer", 2),
_msg("user", "tip prompt", 5),
_msg("assistant", "tip answer", 6),
],
truncation_watermark=None,
)
monkeypatch.setattr(routes, "get_session", lambda sid, metadata_only=False: parent)
merged = routes._merged_webui_lineage_messages_for_display(tip, tip.messages)
assert [m["content"] for m in merged] == [
"first prompt",
"first answer",
"parent only prompt",
"parent only answer",
"tip prompt",
"tip answer",
]
def test_webui_lineage_display_merge_preserves_duplicate_turn_duration(monkeypatch):
parent = SimpleNamespace(
session_id="parent",
messages=[
_msg("assistant", "final answer", 2000.0),
],
)
tip = SimpleNamespace(
session_id="tip",
parent_session_id="parent",
session_source="webui",
messages=[
{
"role": "assistant",
"content": "final answer",
"timestamp": 2000.0,
"_turnDuration": 502.765,
},
],
truncation_watermark=None,
)
monkeypatch.setattr(routes, "get_session", lambda sid, metadata_only=False: parent)
merged = routes._merged_webui_lineage_messages_for_display(tip, tip.messages)
assert len(merged) == 1
assert merged[0]["content"] == "final answer"
assert merged[0]["_turnDuration"] == 502.765
def test_webui_lineage_display_keeps_cumulative_child_tail_without_timestamps(monkeypatch):
parent = SimpleNamespace(
session_id="parent",
messages=[
_msg("user", "first prompt", 1000.0),
_msg("assistant", "first answer", 1001.0),
],
)
tip = SimpleNamespace(
session_id="tip",
parent_session_id="parent",
session_source="webui",
messages=[
_msg("user", "first prompt", 1000.0),
_msg("assistant", "first answer", 1001.0),
{"role": "user", "content": "continue after compression"},
{"role": "assistant", "content": "final after compression"},
],
truncation_watermark=None,
)
monkeypatch.setattr(routes, "get_session", lambda sid, metadata_only=False: parent)
merged = routes._merged_webui_lineage_messages_for_display(tip, tip.messages)
assert [m["content"] for m in merged] == [
"first prompt",
"first answer",
"continue after compression",
"final after compression",
]
assert merged[-1]["role"] == "assistant"
def test_webui_lineage_display_merge_skips_explicit_forks(monkeypatch):
parent = SimpleNamespace(
session_id="parent",
messages=[_msg("user", "parent-only", 1)],
)
fork = SimpleNamespace(
session_id="fork",
parent_session_id="parent",
session_source="fork",
messages=[_msg("user", "fork starts here", 2)],
truncation_watermark=None,
)
monkeypatch.setattr(routes, "get_session", lambda sid, metadata_only=False: parent)
merged = routes._merged_webui_lineage_messages_for_display(fork, fork.messages)
assert [m["content"] for m in merged] == ["fork starts here"]