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Multi_Swarm_Coevolutive/tests/unit/test_mutation_dispatcher.py
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Adriano c38311e5fa feat(phase-2.5): mutate_prompt_llm operator + weighted dispatcher + GA wiring
Implementazione completa Phase 2.5 (LLM prompt mutator) seguendo il piano in
docs/superpowers/plans/2026-05-11-mutate-prompt-llm-phase-2-5.md.

Nuovo modulo src/multi_swarm/genome/mutation_prompt_llm.py:
- 6 mutation instructions (tighten_threshold, swap_comparator, add_condition,
  remove_condition, change_timeframe, add_temporal_gate)
- mutate_prompt_llm(g, llm, rng, mutator_tier=ModelTier.B): clona genome con
  tier B per la call mutator, costruisce system+user prompt con istruzione
  scelta random, estrae prompt da tag <prompt>...</prompt>, valida
- is_valid_prompt(): 3 check (lunghezza >= 50, keyword tecnica, diff > 5%
  Levenshtein-like via difflib.SequenceMatcher)
- Fallback random_mutate su qualsiasi validation fail O LLM exception

Esteso src/multi_swarm/genome/mutation.py con weighted_random_mutate dispatcher:
con probabilità prompt_mutation_weight invoca mutate_prompt_llm, altrimenti
random_mutate. Backward compat: llm=None oppure weight=0 → solo scalare.

Integrazione GA loop + RunConfig:
- GAConfig.prompt_mutation_weight: float = 0.0 (default off)
- next_generation(llm=...) propagato all'invocazione mutator
- RunConfig.prompt_mutation_weight con stesso default
- run_phase1: passa llm a next_generation solo se weight > 0
- scripts/run_phase1.py: flag CLI --prompt-mutation-weight

Tests (+18, 175 totale):
- tests/unit/test_mutation_prompt_llm.py (12): extract_prompt, is_valid_prompt
  3 check, operator success + fallback su 3 modi (invalid/identical/exception),
  tier B per LLM call, istruzione scelta dal pool
- tests/unit/test_mutation_dispatcher.py (4): weight 0/1/None + distribuzione
  30/70 su 1000 estrazioni con tolleranza ±5%
- tests/integration/test_ga_loop_with_prompt_mutator.py (2): loop con
  weight=1.0 produce prompt evoluti; backward compat weight=0 invariato

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-11 23:49:46 +02:00

103 lines
2.9 KiB
Python

from __future__ import annotations
import random
from collections import Counter
from dataclasses import dataclass
from multi_swarm.genome.hypothesis import HypothesisAgentGenome, ModelTier
from multi_swarm.genome.mutation import weighted_random_mutate
_PROMPT = (
"Strategia mean-reversion 1h BTC. Entry long quando RSI(14) < 30 e "
"close > SMA(50). Exit short quando RSI(14) > 70."
)
def _make_genome() -> HypothesisAgentGenome:
return HypothesisAgentGenome(
system_prompt=_PROMPT,
feature_access=["close"],
temperature=0.9,
top_p=0.95,
model_tier=ModelTier.C,
lookback_window=200,
cognitive_style="physicist",
)
@dataclass
class _R:
text: str
class _AlwaysMutateLLM:
"""Mock LLM che ritorna sempre un prompt mutato valido."""
def __init__(self) -> None:
self.calls = 0
def complete(self, genome, system, user, max_tokens: int = 2000) -> _R:
self.calls += 1
return _R(
text=(
"<prompt>Strategia momentum 1h BTC. Entry long quando close > "
f"SMA(70) e ATR(14) crescente. Exit con stop loss 3% (call #{self.calls}).</prompt>"
)
)
def test_weighted_dispatcher_zero_weight_never_calls_llm() -> None:
llm = _AlwaysMutateLLM()
rng = random.Random(0)
parent = _make_genome()
for _ in range(50):
weighted_random_mutate(parent, rng, llm=llm, prompt_mutation_weight=0.0)
assert llm.calls == 0
def test_weighted_dispatcher_full_weight_always_calls_llm() -> None:
llm = _AlwaysMutateLLM()
rng = random.Random(0)
parent = _make_genome()
for _ in range(20):
child = weighted_random_mutate(
parent, rng, llm=llm, prompt_mutation_weight=1.0
)
assert child.system_prompt != parent.system_prompt
assert llm.calls == 20
def test_weighted_dispatcher_none_llm_falls_back_to_scalar() -> None:
"""Senza llm passato (backward compat) → solo mutazione scalare."""
rng = random.Random(0)
parent = _make_genome()
for _ in range(50):
child = weighted_random_mutate(parent, rng, llm=None, prompt_mutation_weight=0.5)
assert child.system_prompt == parent.system_prompt
def test_weighted_dispatcher_distribution_30_70() -> None:
"""Su 1000 estrazioni con weight=0.3 il prompt mutator deve essere chiamato ~300 volte."""
llm = _AlwaysMutateLLM()
rng = random.Random(123)
parent = _make_genome()
counter: Counter[str] = Counter()
for _ in range(1000):
child = weighted_random_mutate(
parent, rng, llm=llm, prompt_mutation_weight=0.3
)
if child.system_prompt != parent.system_prompt:
counter["prompt"] += 1
else:
counter["scalar"] += 1
# 30% ± 5% tolerance
assert 250 <= counter["prompt"] <= 350, f"prompt mutations: {counter['prompt']}"
assert 650 <= counter["scalar"] <= 750, f"scalar mutations: {counter['scalar']}"