anti
8161c67ec5
BEHAVE-EXTRACTOR.md Phase B Step B.4. First implementation —
prototype doesn't ship this primitive.
* SessionContext gains intra_command_iats: per-command tuple of
IATs between consecutive input events whose timestamps fall
inside [cmd.start_ts, cmd.end_ts). Excludes the terminator IAT.
Built by _per_command_iats.
* _features/motor.py:command_chunking(ctx) emits one Observation
in {fluent, fragmented, single_command}.
- 0 commands → skip emit
- 1 command → single_command (registry-allowed point)
- ≥2 commands → median CV across per-command typed-IATs;
< CMD_CHUNKING_FLUENT_CV_MAX (0.50) → fluent, else fragmented
- paste-only sessions (no command has ≥3 typed IATs) → skip emit
(no honest within-command rhythm to measure)
Confidence 0.80 / 0.65 / 0.60.
* Calibration grid widened to include motor.command_chunking;
green across all five shards. Phase B primitive set complete.
Tests: no commands → skip, 1 command → single_command, uniform
typing → fluent, alternating fast/slow → fragmented, paste-only
multi-command → skip emit.
75 lines
2.6 KiB
Python
75 lines
2.6 KiB
Python
"""Step B.4: ``motor.command_chunking``."""
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from __future__ import annotations
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from decnet.profiler.behave_shell import extract_session
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from decnet.profiler.behave_shell._parse import AsciinemaEvent
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def _of(observations: list, primitive: str):
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obs = [o for o in observations if o.primitive == primitive]
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assert len(obs) == 1, f"expected exactly one {primitive}, got {len(obs)}"
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return obs[0]
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def _typed_command(start_ts: float, chars: str, iat: float) -> list[AsciinemaEvent]:
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"""Build a typed command starting at ``start_ts`` with uniform IAT
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between chars. Terminates with ``\\r``."""
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events: list[AsciinemaEvent] = []
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t = start_ts
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for c in chars:
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events.append((t, "i", c))
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t += iat
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events.append((t, "i", "\r"))
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return events
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def test_no_commands_no_emission() -> None:
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out = list(extract_session([(0.0, "i", "ls")], sid="cc-empty"))
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assert [o for o in out if o.primitive == "motor.command_chunking"] == []
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def test_single_command_emits_single_command() -> None:
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events = _typed_command(0.0, "ls -la", 0.1)
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out = list(extract_session(events, sid="cc-single"))
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obs = _of(out, "motor.command_chunking")
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assert obs.value == "single_command"
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assert obs.confidence == 0.80
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def test_uniform_intra_command_typing_emits_fluent() -> None:
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events = []
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for i in range(4):
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events += _typed_command(i * 5.0, "ls -la", 0.1)
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out = list(extract_session(events, sid="cc-fluent"))
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obs = _of(out, "motor.command_chunking")
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assert obs.value == "fluent"
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def test_high_intra_command_variance_emits_fragmented() -> None:
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# Per-command IATs drawn so within-command CV >= 0.50: alternating
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# very-fast and very-slow keystrokes.
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events: list[AsciinemaEvent] = []
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base = 0.0
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for cmd_idx in range(3):
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t = base
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for j, c in enumerate("hello"):
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events.append((t, "i", c))
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# Alternate fast/slow → high CV inside each command
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t += 0.05 if j % 2 == 0 else 0.50
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events.append((t, "i", "\r"))
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base += 5.0
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out = list(extract_session(events, sid="cc-fragmented"))
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obs = _of(out, "motor.command_chunking")
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assert obs.value == "fragmented"
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def test_paste_only_multi_command_no_emission() -> None:
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# Each command arrives as one paste event — no within-command IATs
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events: list[AsciinemaEvent] = [
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(0.0, "i", "echo aaaa\r"),
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(1.0, "i", "echo bbbb\r"),
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(2.0, "i", "echo cccc\r"),
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]
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out = list(extract_session(events, sid="cc-paste-only"))
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assert [o for o in out if o.primitive == "motor.command_chunking"] == []
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