Fix MegaMek#7855: Fix Victory Report for AdvancedBuildingEntity (MegaMek#7856)

Fixes MegaMek#7855

Author: psikomonkie

megamek/src/megamek/common/units/AbstractBuildingEntity.java

@@ -715,7 +715,43 @@ public void addEquipment(Mounted<?> mounted, int loc, boolean rearMounted)
      */
     @Override
     public Vector<Report> victoryReport() {
-        return null;
+        Vector<Report> vDesc = new Vector<>();
+
+        Report report = new Report(7025);
+        report.type = Report.PUBLIC;
+        report.addDesc(this);
+        vDesc.addElement(report);
+
+        report = new Report(7036);
+        report.type = Report.PUBLIC;
+        report.newlines = 0;
+        vDesc.addElement(report);
+        vDesc.addAll(getCrew().getDescVector(false));
+        report = new Report(7070, Report.PUBLIC);
+        report.add(getKillNumber());
+        vDesc.addElement(report);
+
+        if (isDestroyed()) {
+            Entity killer = game.getEntity(killerId);
+            if (killer == null) {
+                killer = game.getOutOfGameEntity(killerId);
+            }
+            if (killer != null) {
+                report = new Report(7072, Report.PUBLIC);
+                report.addDesc(killer);
+            } else {
+                report = new Report(7073, Report.PUBLIC);
+            }
+            vDesc.addElement(report);
+            report.newlines = 2;
+        } else if (getCrew().isEjected()) {
+            report = new Report(7071, Report.PUBLIC);
+            vDesc.addElement(report);
+            report.newlines = 2;
+        }
+
+
+        return vDesc;
     }
 
     /**

megamek/unittests/megamek/common/AbstractBuildingEntityTest.java

@@ -36,10 +36,10 @@
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
-import static org.junit.jupiter.api.Assertions.assertNull;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 import static org.mockito.ArgumentMatchers.any;
 
+import java.util.Vector;
 import java.util.stream.Stream;
 
 import megamek.common.board.Coords;
@@ -251,7 +251,15 @@ void testAddEquipment(AbstractBuildingEntity building) throws Exception {
     @ParameterizedTest
     @MethodSource("buildingProvider")
     void testVictoryReport(AbstractBuildingEntity building) {
-        assertNull(building.victoryReport());
+        // Arrange
+        initializeBuildingOnBoard(building);
+
+        // Act
+        Vector<Report> victoryReports = building.victoryReport();
+
+        // Assert
+        assertNotNull(victoryReports);
+        assertEquals(4, victoryReports.size());
     }
 
     @ParameterizedTest