rezani poole i kdyz je zlenenobonusove pole na stejnmstridaci

backend/tests/test_planning_dispatch_milp.py

@@ -205,6 +205,55 @@ def replace_slot(
 
 
 class PlanningDispatchMilpTests(unittest.TestCase):
+    def test_neg_sell_with_future_neg_buy_prefers_curtail_pv_a_over_export(self) -> None:
+        """
+        Když:
+        - aktuální slot má sell < 0 (export je náklad),
+        - v horizontu existuje budoucí buy < 0,
+        - a zároveň existuje PV B (necurtailable) někde v horizontu,
+        solver preferuje curtail PV A (ca) místo placeného exportu ge.
+        """
+        slots = [
+            _slot(load=0, buy=3.0, sell=-0.1, pv_a=5000, pv_b=0),
+            _slot(load=0, buy=-10.0, sell=1.0, pv_a=0, pv_b=5000),
+        ]
+        battery = _battery(uc_wh=50_000.0)
+        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=20_000, max_export_power_w=20_000)
+        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 = 0.50 * battery.usable_capacity_wh
+        results, _ms = solve_dispatch(
+            slots,
+            battery,
+            hp,
+            grid,
+            [None, None],
+            vehicles,
+            soc0,
+            50.0,
+            tuv_delta_stats=None,
+            operating_mode="AUTO",
+        )
+        self.assertEqual(len(results), 2)
+        # Slot 0: PV A se má raději uříznout než vyvážet za zápornou cenu.
+        self.assertEqual(int(results[0].pv_a_curtailed_w), 5000)
+        self.assertGreaterEqual(int(results[0].grid_setpoint_w), 0)
+
     def test_two_tier_soc_solves_optimal(self) -> None:
         slots = [_slot()]
         battery = _battery()