BEHAVE-EXTRACTOR.md Phase A Step 0. Lays the package skeleton (__init__/extract/_parse/_ctx/_thresholds/_features) with empty FEATURES = (), so the worker plumbing in BEHAVE-INTEGRATION Phase 4 has a stable import path before any primitive lands. extract_session() builds a SessionContext once and fans the registered feature functions across it; at Step 0 that fan-out is empty and the function yields nothing. Step 1 (asciinema parser + paste-burst detector) and Step 2 (motor.input_modality) land next. Smoke suite asserts the empty contract: empty stream → no observations, single event → t_start == t_end, multi-event → events routed into input_events / output_events by kind, evidence_ref defaults to "session:<sid>" or honours an explicit override.
95 lines
3.1 KiB
Python
95 lines
3.1 KiB
Python
"""Step 0 smoke: prove the wiring before any logic.
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Before any feature function lands, verify:
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* the public ``extract_session`` import path resolves;
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* an empty event stream yields zero observations and a well-formed
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zero-duration ``SessionContext``;
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* a single input event yields a context with ``t_start == t_end``
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and ``duration_s == 0.0``;
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* a multi-event stream populates ``t_start`` / ``t_end`` /
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``duration_s`` correctly and routes events into the
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``input_events`` / ``output_events`` slots by kind;
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* ``FEATURES`` is empty at Step 0 — the empty contract is the gate
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that the next step must intentionally break.
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"""
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from __future__ import annotations
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from decnet.profiler.behave_shell import (
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DEFAULT_SOURCE,
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build_context,
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extract_session,
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)
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from decnet.profiler.behave_shell._features import FEATURES
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from decnet.profiler.behave_shell._parse import AsciinemaEvent
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def test_features_tuple_is_empty_at_step_0() -> None:
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assert FEATURES == ()
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def test_default_source_is_canonical_path() -> None:
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assert DEFAULT_SOURCE == "decnet/profiler/behave_shell/extract.py"
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def test_extract_session_empty_stream_yields_no_observations() -> None:
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out = list(extract_session([], sid="sess-empty"))
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assert out == []
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def test_build_context_empty_stream_zero_duration() -> None:
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ctx = build_context([], sid="sess-empty")
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assert ctx.sid == "sess-empty"
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assert ctx.source == DEFAULT_SOURCE
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assert ctx.evidence_ref == "session:sess-empty"
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assert ctx.t_start == 0.0
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assert ctx.t_end == 0.0
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assert ctx.duration_s == 0.0
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assert ctx.input_events == ()
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assert ctx.output_events == ()
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def test_build_context_single_input_event() -> None:
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events: list[AsciinemaEvent] = [(1.5, "i", "a")]
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ctx = build_context(events, sid="sess-1")
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assert ctx.t_start == 1.5
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assert ctx.t_end == 1.5
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assert ctx.duration_s == 0.0
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assert ctx.input_events == ((1.5, "i", "a"),)
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assert ctx.output_events == ()
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def test_build_context_multi_event_routes_by_kind() -> None:
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events: list[AsciinemaEvent] = [
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(0.0, "i", "l"),
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(0.1, "i", "s"),
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(0.2, "o", "ls\r\n"),
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(0.3, "o", "file.txt\r\n"),
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(0.5, "i", "\r"),
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]
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ctx = build_context(events, sid="sess-multi")
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assert ctx.t_start == 0.0
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assert ctx.t_end == 0.5
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assert ctx.duration_s == 0.5
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assert len(ctx.input_events) == 3
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assert len(ctx.output_events) == 2
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# Order preserved
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assert ctx.input_events[0] == (0.0, "i", "l")
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assert ctx.output_events[-1] == (0.3, "o", "file.txt\r\n")
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def test_extract_session_explicit_evidence_ref_overrides_default() -> None:
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ctx = build_context(
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[(0.0, "i", "x")],
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sid="sess-x",
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evidence_ref="shard:/var/log/d/sess-x.cast",
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)
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assert ctx.evidence_ref == "shard:/var/log/d/sess-x.cast"
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def test_extract_session_with_features_still_empty() -> None:
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"""Until Step 2 lands, even a populated stream emits nothing."""
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events: list[AsciinemaEvent] = [(t / 10.0, "i", c) for t, c in enumerate("hello\r")]
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out = list(extract_session(events, sid="sess-features-empty"))
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assert out == []
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