anti
c8166a6071
Sliding-window scan over single-char digit input events. A run of NUMPAD_RUN_MIN (4) consecutive digit events whose pairwise IATs are all ≤ NUMPAD_FAST_IAT_S (50ms) → detected. Otherwise → not_detected. Skips below NUMPAD_MIN_TYPED_CHARS (50) typed chars. Confidence cap 0.50 per the registry's weak-signal flag.
58 lines
2.1 KiB
Python
58 lines
2.1 KiB
Python
"""Step F.5: ``environmental.numpad_usage``."""
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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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PRIMITIVE = "environmental.numpad_usage"
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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(text: str, t0: float = 0.0, dt: float = 0.10) -> list[AsciinemaEvent]:
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return [(t0 + i * dt, "i", c) for i, c in enumerate(text)]
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def test_below_min_typed_chars_no_emission() -> None:
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out = list(extract_session(_typed("ls\r"), sid="np-tiny"))
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assert [o for o in out if o.primitive == PRIMITIVE] == []
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def test_no_digit_runs_emits_not_detected() -> None:
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"""50+ typed chars, none of them digit runs → not_detected."""
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text = "the quick brown fox jumps over the lazy dog repeatedly\r"
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out = list(extract_session(_typed(text, dt=0.10), sid="np-text"))
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obs = _of(out, PRIMITIVE)
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assert obs.value == "not_detected"
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def test_slow_digit_typing_not_detected() -> None:
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"""Slow digit typing (typing-speed cadence) → not_detected."""
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# 100ms IAT between digits — too slow for numpad
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text = "1234567890" * 6 + "\r" # 60 digits + return for command boundary
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out = list(extract_session(_typed(text, dt=0.10), sid="np-slow"))
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obs = _of(out, PRIMITIVE)
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assert obs.value == "not_detected"
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def test_fast_digit_run_emits_detected() -> None:
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"""Sub-50ms digit cadence over a 4+ run → detected."""
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# Build a session with 50+ chars first, then a fast digit burst
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events: list[AsciinemaEvent] = []
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# Filler typing (slow)
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for i, c in enumerate("the quick brown fox jumps over the lazy dog filler"):
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events.append((i * 0.10, "i", c))
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# Fast digit run starting at t=10s — IAT=20ms
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base = 10.0
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for i, d in enumerate("1234567890"):
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events.append((base + i * 0.020, "i", d))
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events.append((20.0, "i", "\r"))
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out = list(extract_session(events, sid="np-fast"))
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obs = _of(out, PRIMITIVE)
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assert obs.value == "detected"
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