Add walk-forward validation with optimizer, OOS evaluation and visualizer

tests/test_wf_visualizer.py

@@ -0,0 +1,40 @@
+# tests/test_wf_visualizer.py
+
+import sys
+from pathlib import Path
+import pandas as pd
+
+# Añadir raíz del proyecto al path
+sys.path.insert(0, str(Path(__file__).parent.parent))
+
+from src.backtest.visualizers.walk_forward_visualizer import WalkForwardVisualizer
+
+
+def test_wf_visualizer():
+    """
+    Test del WalkForwardVisualizer usando los CSV existentes
+    """
+
+    base_path = Path("backtest_results/walkforward")
+
+    summary_df = pd.read_csv(base_path / "walkforward_summary.csv")
+    windows_df = pd.read_csv(base_path / "walkforward_windows.csv")
+
+    viz = WalkForwardVisualizer(
+        summary_df=summary_df,
+        windows_df=windows_df,
+        name="BTC/USDT – MA + ADX"
+    )
+
+    # 📊 Plots
+    viz.plot_avg_metrics()
+    viz.plot_returns_by_window()
+    viz.plot_drawdown_by_window()
+    viz.plot_return_distribution()
+    viz.plot_parameter_stability("fast_period")
+    viz.plot_parameter_stability("slow_period")
+    viz.plot_parameter_stability("adx_threshold")
+
+
+if __name__ == "__main__":
+    test_wf_visualizer()