chore: improve tests for Spring

Author: zepfred

spring-integration/spring-boot-integration-test/src/main/java/ai/timefold/solver/spring/boot/it/domain/IntegrationTestEntity.java

@@ -6,6 +6,8 @@
 import ai.timefold.solver.core.api.domain.lookup.PlanningId;
 import ai.timefold.solver.core.api.domain.valuerange.ValueRangeProvider;
 import ai.timefold.solver.core.api.domain.variable.PlanningVariable;
+import ai.timefold.solver.core.api.domain.variable.ShadowSources;
+import ai.timefold.solver.core.api.domain.variable.ShadowVariable;
 
 @PlanningEntity
 public class IntegrationTestEntity {
@@ -17,6 +19,12 @@ public class IntegrationTestEntity {
 
     private List<IntegrationTestValue> valueList;
 
+    @ShadowVariable(supplierName = "processShadowVarWithParam")
+    private Integer shadowVarWithParam;
+
+    @ShadowVariable(supplierName = "processShadowVarWithoutParam")
+    private Integer shadowVarWithoutParam;
+
     public IntegrationTestEntity() {
     }
 
@@ -53,4 +61,17 @@ public void setValueList(List<IntegrationTestValue> valueList) {
     public List<IntegrationTestValue> getValueRangeWithParameter(IntegrationTestSolution solution) {
         return solution.getValueList();
     }
+
+    @ShadowSources("value")
+    public int processShadowVarWithParam(IntegrationTestSolution solution) {
+        if (solution == null) {
+            throw new NullPointerException("solution is null");
+        }
+        return solution.getDummyShadowValue();
+    }
+
+    @ShadowSources("value")
+    public int processShadowVarWithoutParam() {
+        return -1;
+    }
 }

spring-integration/spring-boot-integration-test/src/main/java/ai/timefold/solver/spring/boot/it/domain/IntegrationTestSolution.java

@@ -41,6 +41,10 @@ public void setValueList(List<IntegrationTestValue> valueList) {
         this.valueList = valueList;
     }
 
+    public int getDummyShadowValue() {
+        return 10;
+    }
+
     public SimpleScore getScore() {
         return score;
     }