mirror of
https://github.com/nesquena/hermes-webui.git
synced 2026-05-28 12:40:26 +00:00
Frank Song
53 lines
2.2 KiB
Python
53 lines
2.2 KiB
Python
"""Regression tests for session switch model hydration in the WebUI.
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Old sessions can persist provider-shaped model IDs such as ``openai/gpt-5.4-mini``
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after the active runtime moved to OpenAI Codex ``gpt-5.5``. The UI still needs
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to repair those stale values, but session switching first paint must not pay the
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model catalog cost synchronously.
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"""
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from pathlib import Path
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REPO_ROOT = Path(__file__).resolve().parents[1]
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SESSIONS_JS = (REPO_ROOT / "static" / "sessions.js").read_text(encoding="utf-8")
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def _extract_function(src: str, signature: str) -> str:
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start = src.find(signature)
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assert start >= 0, f"missing function signature: {signature}"
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brace = src.find("{", start)
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assert brace >= 0, f"missing function body for: {signature}"
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depth = 0
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for idx in range(brace, len(src)):
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ch = src[idx]
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if ch == "{":
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depth += 1
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elif ch == "}":
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depth -= 1
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if depth == 0:
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return src[start : idx + 1]
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raise AssertionError(f"unterminated function body for: {signature}")
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def test_load_session_initial_metadata_request_defers_model_resolution_until_after_state_assignment():
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body = _extract_function(SESSIONS_JS, "async function loadSession(sid")
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fast_metadata_fetch = "messages=0&resolve_model=0"
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deferred_metadata_fetch = "messages=0&resolve_model=1"
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assignment = "S.session=data.session"
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assert fast_metadata_fetch in body[: body.index(assignment)], (
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"loadSession() first paint must use the metadata fast path so session "
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"switching cannot block on cold model catalog hydration"
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)
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assert deferred_metadata_fetch not in body[: body.index(assignment)], (
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"loadSession() must not resolve model metadata before assigning S.session; "
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"stale model/provider correction belongs to the deferred path"
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)
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assert "_resolveSessionModelForDisplaySoon(sid)" in body[body.index(assignment):], (
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"stale persisted model/provider correction must still happen after first paint"
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)
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assert body.count("_resolveSessionModelForDisplaySoon(sid)") == 1, (
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"deferred model repair should run once per session switch, not once after "
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"metadata and again after message hydration"
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)
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