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hms-mediaengine/tests/unit/test_adaptive_quality.py
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HMS MediaEngine Agent 0922cc1d68 Phase 0: Repository-Initialisierung nach Bauplan v1.2
- Struktur gemäß §8 (Eigentumsgrenzen), PLAN.md als normative Basis
- Pflichtdokumente: STATUS.md, ERRORS.md, TEST_REPORT.md, CHANGELOG.md, ADRs
- ADR-0001 Python 3.13-Pin, ADR-0002 GStreamer 1.28.6-Pin (Windows),
  ADR-0003 IPC TCP+MessagePack v1
- Kernpakete: hms_protocol, hms_domain, hms_parameter, hms_artnet,
  hms_adaptive, hms_capabilities, hms_plugin_sdk
- Renderer-Spike: D3D11-Primärpfad + Dev-GL-Pfad (§36 Nr. 4-5)
- Control Core: FastAPI REST + WebSocket (§36 Nr. 9)
- Beispielplugins: Passthrough + Gaussian Blur (3 Adaptive-Quality-
  Varianten, HLSL/GLSL/GLES)
- Tools: Art-Net-Emulator, Fixture-Generator (Master32/Layer64-CSV),
  Capability-Probe
- JSON-Schemas: IPC, Plugin, Projekt, Cluster
- 121 Unit-/Integrationstests grün, Ruff grün

Gate 0 bleibt offen: Hardwaremessungen nur auf echter Windows-Referenz-
hardware gültig (§29.7, §33).
2026-09-11 00:36:59 +02:00

75 lines
2.3 KiB
Python

"""Unit-Tests Adaptive Quality (PLAN.md §5.2)."""
from __future__ import annotations
from hms_adaptive import AdaptiveQualityController, QualityLevel
def _fast_controller() -> AdaptiveQualityController:
"""Regler ohne echte Wartezeiten für deterministische Tests."""
return AdaptiveQualityController(min_hold_ms=0, downgrade_intervals=2, upgrade_intervals=6)
def test_starts_at_high() -> None:
assert _fast_controller().level is QualityLevel.HIGH
def test_single_bad_interval_does_not_downgrade() -> None:
c = _fast_controller()
assert c.step(30.0) is QualityLevel.HIGH # 1 schlechtes Intervall genügt nicht
def test_downgrades_one_level_per_interval_not_more() -> None:
c = _fast_controller()
c.step(30.0)
c.step(30.0)
assert c.level is QualityLevel.MEDIUM # genau eine Stufe (Hysterese, §5.2)
c.step(30.0)
c.step(30.0)
assert c.level is QualityLevel.LOW
assert c.step(30.0) is QualityLevel.LOW # Untergrenze
def test_upgrade_needs_sustained_reserve() -> None:
c = _fast_controller()
for _ in range(4):
c.step(30.0)
assert c.level is QualityLevel.LOW
for _ in range(5): # 5 gute Intervalle genügen nicht (Upgrade träger)
c.step(1.0)
assert c.level is QualityLevel.LOW
c.step(1.0) # 6. gutes Intervall → eine Stufe hoch
assert c.level is QualityLevel.MEDIUM
def test_upgrade_slower_than_downgrade() -> None:
c = _fast_controller()
assert c.downgrade_intervals < c.upgrade_intervals
def test_no_pumping_on_alternating_load() -> None:
c = _fast_controller()
levels = []
for _ in range(60):
levels.append(c.step(30.0)) # Dauerlast → LOW
assert c.level is QualityLevel.LOW
for _ in range(3):
c.step(1.0) # kurze Erholung darf kein Pumpen erzeugen
c.step(30.0)
assert c.level is QualityLevel.LOW # keine Aufwertung bei alternierender Last
def test_reason_is_recorded() -> None:
c = _fast_controller()
c.step(30.0)
c.step(30.0)
assert "p99" in c.last_reason and "budget" in c.last_reason
def test_default_min_hold_prevents_rapid_changes(monkeypatch) -> None:
c = AdaptiveQualityController() # min_hold_ms=2000 (Produktionswert)
c.step(30.0)
c.step(30.0)
assert c.level is QualityLevel.HIGH # Mindesthaltezeit noch nicht vergangen