chore: mixed model error for LS

Author: zepfred

core/src/main/java/ai/timefold/solver/core/impl/localsearch/DefaultLocalSearchPhaseFactory.java

@@ -68,7 +68,10 @@ public LocalSearchPhase<Solution_> buildPhase(int phaseIndex, boolean lastInitia
                     The solver configuration enabled both move selectors and Move Streams.
                     These are mutually exclusive features, please pick one or the other.""");
         }
-
+        if (solverConfigPolicy.getSolutionDescriptor().hasBothBasicAndListVariables()) {
+            throw new UnsupportedOperationException(
+                    "A mixed model using both basic and list variables is not supported yet.");
+        }
         var phaseConfigPolicy = solverConfigPolicy.createPhaseConfigPolicy();
         var phaseTermination = buildPhaseTermination(phaseConfigPolicy, solverTermination);
         var decider = moveStreamsEnabled

core/src/test/java/ai/timefold/solver/core/impl/constructionheuristic/DefaultConstructionHeuristicPhaseTest.java

@@ -22,6 +22,7 @@
 import ai.timefold.solver.core.config.constructionheuristic.placer.QueuedValuePlacerConfig;
 import ai.timefold.solver.core.config.heuristic.selector.move.generic.list.ListChangeMoveSelectorConfig;
 import ai.timefold.solver.core.config.heuristic.selector.value.ValueSelectorConfig;
+import ai.timefold.solver.core.config.localsearch.LocalSearchPhaseConfig;
 import ai.timefold.solver.core.config.solver.monitoring.MonitoringConfig;
 import ai.timefold.solver.core.config.solver.monitoring.SolverMetric;
 import ai.timefold.solver.core.config.solver.termination.TerminationConfig;
@@ -420,6 +421,21 @@ void failMultiEntityWithListAndBasicVariables() {
                 .hasMessageContaining("it cannot be deduced automatically");
     }
 
+    @Test
+    void failLocalSearchWithListAndBasicVariables() {
+        var solverConfig = PlannerTestUtils.buildSolverConfig(
+                TestdataListMultiVarSolution.class, TestdataListMultiVarEntity.class, TestdataListMultiVarValue.class,
+                TestdataListMultiVarOtherValue.class)
+                .withPhases(new ConstructionHeuristicPhaseConfig()
+                        .withTerminationConfig(new TerminationConfig().withStepCountLimit(16)),
+                        new LocalSearchPhaseConfig())
+                .withEasyScoreCalculatorClass(TestdataListMultiVarEasyScoreCalculator.class);
+
+        var problem = TestdataListMultiVarSolution.generateUninitializedSolution(2, 2, 2);
+        assertThatCode(() -> PlannerTestUtils.solve(solverConfig, problem))
+                .hasMessageContaining("A mixed model using both basic and list variables is not supported yet.");
+    }
+
     @Test
     void solveWithListAndBasicVariables() {
         var solverConfig = PlannerTestUtils.buildSolverConfig(