Files
coinhunter/tests/test_backtest_service.py
Carlos Ouyang e4b2239bcd feat: add strategy and backtest services
- strategy_service.py combines opportunity + portfolio signals into
  unified buy/sell/hold recommendations
- backtest_service.py runs walk-forward backtests on historical datasets
  with virtual cash and positions
- CLI adds `strategy` and `backtest` commands with `--decision-interval`
  and other tuning parameters
- Add tests for both services and CLI dispatch
- Update CLAUDE.md with new architecture docs
- Optimize model weights via opportunity optimizer

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-04-27 13:21:35 +08:00

130 lines
5.0 KiB
Python

"""Tests for backtest_service."""
from __future__ import annotations
import json
import tempfile
import unittest
from pathlib import Path
from typing import Any
from coinhunter.services import backtest_service
class BacktestServiceTestCase(unittest.TestCase):
def _klines(self, closes: list[float], start_ms: int = 0, volumes: list[float] | None = None) -> list[list[float]]:
volumes = volumes or [1.0] * len(closes)
return [
[start_ms + i * 3600000, c * 0.98, c * 1.02, c * 0.97, c, v, 0.0, c * v, 100, 0.0, 0.0, 0.0]
for i, (c, v) in enumerate(zip(closes, volumes))
]
def _config(self) -> dict[str, Any]:
return {
"opportunity": {
"entry_threshold": 1.5,
"watch_threshold": 0.6,
"min_trigger_score": 0.45,
"min_setup_score": 0.35,
"overlap_penalty": 0.6,
"top_n": 10,
"scan_limit": 50,
"kline_limit": 48,
"weights": {},
"model_weights": {},
},
"portfolio": {
"add_threshold": 1.5,
"hold_threshold": 0.6,
"trim_threshold": 0.2,
"exit_threshold": -0.2,
"max_position_weight": 0.6,
"max_positions": 5,
},
"signal": {
"lookback_interval": "1h",
},
"market": {
"default_quote": "USDT",
},
"trading": {
"commission_pct": 0.001,
},
}
def _make_dataset(self, closes_by_symbol: dict[str, list[float]], start_iso: str = "2025-12-28T00:00:00Z", sim_start_iso: str = "2025-12-30T00:00:00Z", sim_end_iso: str = "2026-01-01T00:00:00Z") -> Path:
from datetime import datetime, timezone
start_ms = int(datetime.fromisoformat(start_iso.replace("Z", "+00:00")).timestamp() * 1000)
klines: dict[str, dict[str, list[list[float]]]] = {}
for symbol, closes in closes_by_symbol.items():
klines[symbol] = {"1h": self._klines(closes, start_ms=start_ms)}
dataset = {
"metadata": {
"created_at": "2026-01-01T00:00:00Z",
"quote": "USDT",
"symbols": list(closes_by_symbol.keys()),
"plan": {
"intervals": ["1h"],
"kline_limit": 48,
"reference_days": 2.0,
"simulate_days": 1.0,
"run_days": 1.0,
"total_days": 4.0,
"start": start_iso,
"simulation_start": sim_start_iso,
"simulation_end": sim_end_iso,
"end": sim_end_iso,
},
"external_history": {"provider": "disabled", "status": "disabled"},
},
"klines": klines,
}
fp = tempfile.NamedTemporaryFile(mode="w", suffix=".json", delete=False)
json.dump(dataset, fp)
fp.close()
return Path(fp.name)
def test_run_backtest_produces_summary(self) -> None:
config = self._config()
closes = list(range(20, 92))
path = self._make_dataset({"BTCUSDT": closes})
try:
result = backtest_service.run_backtest(config, dataset_path=str(path), initial_cash=10000.0)
self.assertIn("summary", result)
self.assertIn("trades", result)
self.assertIn("equity_curve", result)
self.assertIn("parameters", result)
summary = result["summary"]
self.assertIn("initial_cash", summary)
self.assertIn("final_equity", summary)
self.assertIn("total_return_pct", summary)
self.assertIn("max_drawdown_pct", summary)
self.assertIn("win_rate", summary)
finally:
path.unlink()
def test_run_backtest_missing_simulation_dates_raises(self) -> None:
config = self._config()
path = self._make_dataset({"BTCUSDT": list(range(20, 92))}, sim_start_iso="", sim_end_iso="")
try:
with self.assertRaises(ValueError):
backtest_service.run_backtest(config, dataset_path=str(path))
finally:
path.unlink()
def test_run_backtest_tracks_equity_curve(self) -> None:
config = self._config()
# Need ~72 candles to cover 2025-12-28 through 2026-01-01 (warmup + simulation)
closes = list(range(20, 92))
path = self._make_dataset({"BTCUSDT": closes})
try:
result = backtest_service.run_backtest(config, dataset_path=str(path), initial_cash=10000.0)
self.assertTrue(len(result["equity_curve"]) > 0)
first = result["equity_curve"][0]
self.assertIn("time", first)
self.assertIn("equity", first)
self.assertIn("cash", first)
self.assertIn("positions_count", first)
finally:
path.unlink()