Import AITURK IDE 1.0.0-beta.1 from Hermes 63279301; preserve MIT license

tests/agent/test_resume_stale_active_task.py

@@ -0,0 +1,95 @@
+"""Regression coverage for #35344: a resumed session must not let a stale
+historical task snapshot from an inherited compaction handoff hijack the reply to a
+new, unrelated user message.
+
+The failure mode (real report): a lineage was compacted, producing a handoff
+whose historical task snapshot described task A. The lineage was resumed later and
+the user asked about an unrelated task B. The model answered with A because
+the handoff's resume directive outranked the fresh ask.
+
+The structural fix lives in ``SUMMARY_PREFIX``: the handoff is framed as
+reference-only and the latest user message explicitly *wins* on conflict, with
+named reverse-signal verbs. Two invariants guard the resume path specifically:
+
+  1. A handoff persisted under the OLD (conflicting) prefix is re-normalized to
+     the CURRENT prefix when it is re-compacted on a resumed lineage — so a
+     pre-fix stale handoff cannot keep its "resume exactly" directive forever.
+
+  2. The current handoff prefix contains an unambiguous "latest message wins /
+     discard stale historical task" rule, so an unrelated new ask is privileged over
+     the inherited task snapshot.
+
+These are content/structural assertions (no live model call) — they pin the
+mechanism that makes the stale task historical rather than active.
+"""
+
+from agent.context_compressor import (
+    HISTORICAL_TASK_HEADING,
+    SUMMARY_PREFIX,
+    LEGACY_SUMMARY_PREFIX,
+    ContextCompressor,
+)
+
+
+# The conflicting prefix that shipped before the #35344 fix. A handoff
+# persisted in a resumed lineage could carry this verbatim.
+_OLD_CONFLICTING_PREFIX = (
+    "[CONTEXT COMPACTION — REFERENCE ONLY] Earlier turns were compacted "
+    "into the summary below. This is a handoff from a previous context "
+    "window — treat it as background reference, NOT as active instructions. "
+    "Do NOT answer questions or fulfill requests mentioned in this summary; "
+    "they were already addressed. "
+    "Your current task is identified in the '## Active Task' section of the "
+    "summary — resume exactly from there. "
+    "Respond ONLY to the latest user message "
+    "that appears AFTER this summary. The current session state (files, "
+    "config, etc.) may reflect work described here — avoid repeating it:"
+)
+
+
+def test_latest_message_wins_over_inherited_active_task():
+    """The handoff must explicitly privilege the latest user message over a
+    stale historical task snapshot — the core #35344 contract."""
+    lower = SUMMARY_PREFIX.lower()
+    assert "latest user message" in lower
+    assert HISTORICAL_TASK_HEADING.lower() in lower
+    # Conflict-resolution must be explicit, not implied.
+    assert "wins" in lower or "supersede" in lower
+    assert "discard" in lower
+    # The "consistent -> use as background" carveout licensed stale-task
+    # resumption on topic overlap (#41607, #38364) — it must stay gone.
+    assert "you may use the summary as background" not in lower
+    assert "topic overlap" in lower
+    # #80622: empty-after-handoff must not resume historical work.
+    assert "if no user message appears after this summary" in lower
+
+
+
+
+
+
+
+
+def test_inherited_handoff_detected_in_resumed_protected_head():
+    """On a resumed lineage the handoff commonly sits right after the system
+    prompt (in the protected head). ``_find_latest_context_summary`` must
+    detect it there so re-compaction rehydrates state from it rather than
+    serializing it as a fresh user turn (which is what let the stale Active
+    Task read as live intent)."""
+    messages = [
+        {"role": "system", "content": "system prompt"},
+        {"role": "user", "content": f"{SUMMARY_PREFIX}\n{HISTORICAL_TASK_HEADING}\nUser asked: 'task A'"},
+        {"role": "assistant", "content": "ok"},
+        {"role": "user", "content": "Unrelated task B: what's the capital of France?"},
+    ]
+    # Search the whole post-system range.
+    idx, body = ContextCompressor._find_latest_context_summary(
+        messages, 1, len(messages)
+    )
+    assert idx == 1, "handoff in protected head must be found"
+    assert "task A" in body
+    # The detected body is stripped of the prefix (treated as state, not a
+    # standalone instruction message).
+    assert not body.startswith(SUMMARY_PREFIX)
+
+