Initial import of NousResearch/hermes-agent

tests/cli/test_manual_compress.py

@@ -0,0 +1,184 @@
+"""Tests for CLI manual compression messaging."""
+
+from unittest.mock import MagicMock, patch
+
+from tests.cli.test_cli_init import _make_cli
+
+
+def _make_history() -> list[dict[str, str]]:
+    return [
+        {"role": "user", "content": "one"},
+        {"role": "assistant", "content": "two"},
+        {"role": "user", "content": "three"},
+        {"role": "assistant", "content": "four"},
+    ]
+
+
+def test_manual_compress_reports_noop_without_success_banner(capsys):
+    shell = _make_cli()
+    history = _make_history()
+    shell.conversation_history = history
+    shell.agent = MagicMock()
+    shell.agent.compression_enabled = True
+    shell.agent._cached_system_prompt = ""
+    shell.agent.tools = None
+    shell.agent.session_id = shell.session_id  # no-op compression: no split
+    shell.agent._compress_context.return_value = (list(history), "")
+
+    def _estimate(messages, **_kwargs):
+        assert messages == history
+        return 100
+
+    with patch("agent.model_metadata.estimate_request_tokens_rough", side_effect=_estimate):
+        shell._manual_compress()
+
+    output = capsys.readouterr().out
+    assert "No changes from compression" in output
+    assert "✅ Compressed" not in output
+    assert "Approx request size: ~100 tokens (unchanged)" in output
+
+
+def test_manual_compress_explains_when_token_estimate_rises(capsys):
+    shell = _make_cli()
+    history = _make_history()
+    compressed = [
+        history[0],
+        {"role": "assistant", "content": "Dense summary that still counts as more tokens."},
+        history[-1],
+    ]
+    shell.conversation_history = history
+    shell.agent = MagicMock()
+    shell.agent.compression_enabled = True
+    shell.agent._cached_system_prompt = ""
+    shell.agent.tools = None
+    shell.agent.session_id = shell.session_id  # no-op: no split
+    shell.agent._compress_context.return_value = (compressed, "")
+
+    def _estimate(messages, **_kwargs):
+        if messages == history:
+            return 100
+        if messages == compressed:
+            return 120
+        raise AssertionError(f"unexpected transcript: {messages!r}")
+
+    with patch("agent.model_metadata.estimate_request_tokens_rough", side_effect=_estimate):
+        shell._manual_compress()
+
+    output = capsys.readouterr().out
+    assert "✅ Compressed: 4 → 3 messages" in output
+    assert "Approx request size: ~100 → ~120 tokens" in output
+    assert "denser summaries" in output
+
+
+def test_manual_compress_syncs_session_id_after_split():
+    """Regression for cli.session_id desync after /compress.
+
+    _compress_context ends the parent session and creates a new child session,
+    mutating agent.session_id. Without syncing, cli.session_id still points
+    at the ended parent — causing /status, /resume, exit summary, and the
+    next end_session() call (e.g. from /resume <id>) to target the wrong row.
+    """
+    shell = _make_cli()
+    history = _make_history()
+    old_id = shell.session_id
+    new_child_id = "20260101_000000_child1"
+
+    compressed = [
+        {"role": "user", "content": "[summary]"},
+        history[-1],
+    ]
+    shell.conversation_history = history
+    shell.agent = MagicMock()
+    shell.agent.compression_enabled = True
+    shell.agent._cached_system_prompt = ""
+    shell.agent.tools = None
+    # Simulate _compress_context mutating agent.session_id as a side effect.
+    def _fake_compress(*args, **kwargs):
+        shell.agent.session_id = new_child_id
+        return (compressed, "")
+    shell.agent._compress_context.side_effect = _fake_compress
+    shell.agent.session_id = old_id  # starts in sync
+    shell._pending_title = "stale title"
+
+    with patch("agent.model_metadata.estimate_request_tokens_rough", return_value=100):
+        shell._manual_compress()
+
+    # CLI session_id must now point at the continuation child, not the parent.
+    assert shell.session_id == new_child_id
+    assert shell.session_id != old_id
+    # Pending title must be cleared — titles belong to the parent lineage and
+    # get regenerated for the continuation.
+    assert shell._pending_title is None
+
+
+def test_manual_compress_flushes_compressed_history_to_child_session_db():
+    """Manual /compress must persist the handoff in the continuation DB.
+
+    _compress_context rotates the agent to a new child session and returns a
+    compressed transcript whose first messages include the handoff summary. The
+    CLI then replaces its in-memory conversation_history with that transcript.
+    Because the child DB starts empty, the flush must start from offset 0 rather
+    than treating the compressed history as already persisted.
+    """
+    shell = _make_cli()
+    history = _make_history()
+    old_id = shell.session_id
+    new_child_id = "20260101_000000_child1"
+    compressed = [
+        {"role": "user", "content": "[CONTEXT COMPACTION — REFERENCE ONLY] compacted"},
+        history[-1],
+    ]
+    shell.conversation_history = history
+    shell.agent = MagicMock()
+    shell.agent.compression_enabled = True
+    shell.agent._cached_system_prompt = ""
+    shell.agent.session_id = old_id
+
+    def _fake_compress(*args, **kwargs):
+        shell.agent.session_id = new_child_id
+        return (compressed, "")
+
+    shell.agent._compress_context.side_effect = _fake_compress
+
+    with patch("agent.model_metadata.estimate_messages_tokens_rough", return_value=100):
+        shell._manual_compress()
+
+    shell.agent._flush_messages_to_session_db.assert_called_once_with(compressed, None)
+
+
+def test_manual_compress_does_not_flush_full_history_when_session_id_unchanged():
+    shell = _make_cli()
+    history = _make_history()
+    shell.conversation_history = history
+    shell.agent = MagicMock()
+    shell.agent.compression_enabled = True
+    shell.agent._cached_system_prompt = ""
+    shell.agent.session_id = shell.session_id
+    shell.agent._compress_context.return_value = (list(history), "")
+
+    with patch("agent.model_metadata.estimate_messages_tokens_rough", return_value=100):
+        shell._manual_compress()
+
+    shell.agent._flush_messages_to_session_db.assert_not_called()
+
+
+def test_manual_compress_no_sync_when_session_id_unchanged():
+    """If compression is a no-op (agent.session_id didn't change), the CLI
+    must NOT clear _pending_title or otherwise disturb session state.
+    """
+    shell = _make_cli()
+    history = _make_history()
+    shell.conversation_history = history
+    shell.agent = MagicMock()
+    shell.agent.compression_enabled = True
+    shell.agent._cached_system_prompt = ""
+    shell.agent.tools = None
+    shell.agent.session_id = shell.session_id
+    shell.agent._compress_context.return_value = (list(history), "")
+    shell._pending_title = "keep me"
+
+    with patch("agent.model_metadata.estimate_request_tokens_rough", return_value=100):
+        shell._manual_compress()
+
+    # No split → pending title untouched.
+    assert shell._pending_title == "keep me"