chjo2

backend/tests/test_planning_dispatch_milp.py

@@ -1159,6 +1159,76 @@ class NegativeSellPvChargeTests(unittest.TestCase):
             "nabíjení má dominovat nad curtailmentem",
         )
 
+    def test_negative_sell_charges_from_plateau_soc_without_allow_charge_mask(self) -> None:
+        """BA81: allow_charge=false z DB nesmí vypnout shortfall — charge_slots z sell<0 + PV."""
+        base = datetime(2026, 5, 24, 4, 15, tzinfo=timezone.utc)
+        slots: list[PlanningSlot] = []
+        for i in range(6):
+            h = 6 + (i * 15) // 60
+            m = (i * 15) % 60
+            hour_f = max(0.0, min(1.0, (h + m / 60.0 - 6.0) / 14.0))
+            safety = 3750.0 + 2500.0 * hour_f
+            slots.append(
+                PlanningSlot(
+                    interval_start=base + timedelta(minutes=15 * i),
+                    buy_price=3.088,
+                    sell_price=-0.3,
+                    pv_a_forecast_w=9000,
+                    pv_b_forecast_w=800,
+                    load_baseline_w=150,
+                    ev1_connected=False,
+                    ev2_connected=False,
+                    allow_charge=False,
+                    allow_discharge_export=False,
+                    safety_soc_target_wh=safety,
+                    is_daytime_pv_surplus_slot=True,
+                    future_sell_opportunity_czk_kwh=3.7,
+                )
+            )
+        battery = _battery(uc_wh=12_500.0, terminal_soc_value_factor=0.2)
+        battery.max_charge_power_w = 6_250
+        battery.max_discharge_power_w = 6_250
+        hp = SimpleNamespace(
+            rated_heating_power_w=0,
+            tuv_min_temp_c=45.0,
+            tuv_target_temp_c=55.0,
+        )
+        grid = SimpleNamespace(
+            max_import_power_w=17_000,
+            max_export_power_w=16_000,
+            block_export_on_negative_sell=False,
+        )
+        vehicles = [
+            SimpleNamespace(
+                max_charge_power_w=0,
+                battery_capacity_kwh=1.0,
+                default_target_soc_pct=80.0,
+            ),
+            SimpleNamespace(
+                max_charge_power_w=0,
+                battery_capacity_kwh=1.0,
+                default_target_soc_pct=80.0,
+            ),
+        ]
+        soc0 = 0.508 * battery.usable_capacity_wh
+        results, _ms, snap = solve_dispatch(
+            slots,
+            battery,
+            hp,
+            grid,
+            [None, None],
+            vehicles,
+            soc0,
+            50.0,
+            operating_mode="AUTO",
+        )
+        self.assertEqual(snap.get("planner_build_tag"), "2026-05-24-neg-sell-v2")
+        self.assertGreater(
+            results[0].battery_setpoint_w,
+            5_500,
+            f"od ~51 % SoC má první neg slot nabíjet max, got {[r.battery_setpoint_w for r in results]}",
+        )
+
 
 class AutoPvSurplusExportTests(unittest.TestCase):
     """Plná baterie + vysoká FVE: export přebytku (ge_pv), ne curtailment, bez SELL."""