diff --git a/megameklab/testresources/ui/generalUnit/BasicInfoViewTest/Puma Assault Tank PAT-001.blk b/megameklab/testresources/ui/generalUnit/BasicInfoViewTest/Puma Assault Tank PAT-001.blk
new file mode 100644
index 000000000..0fd2da954
--- /dev/null
+++ b/megameklab/testresources/ui/generalUnit/BasicInfoViewTest/Puma Assault Tank PAT-001.blk
@@ -0,0 +1,103 @@
+#Saved from version 0.50.03-SNAPSHOT on 2025-01-09
+
+Tank
+
+
+
+Puma Assault Tank
+
+
+
+PAT-001
+
+
+
+4879
+
+
+
+2650
+
+
+
+2650
+
+
+
+IS Level 1
+
+
+
+None
+
+
+
+Tracked
+
+
+
+3
+
+
+
+0
+
+
+
+0
+
+
+
+0
+
+
+
+0
+
+
+
+48
+32
+32
+24
+48
+
+
+
+IS Vehicle Flamer Ammo
+IS Ammo SRM-4
+IS Ammo LRM-20
+IS Ammo LRM-20
+
+
+
+Medium Laser
+Medium Laser
+SRM 4
+
+
+
+LRM 20
+
+
+
+LRM 20
+
+
+
+Small Laser
+Flamer (Vehicle)
+
+
+
+PPC
+
+
+
+TRO: 3050
+
+
+
+95.0
+
+
diff --git a/megameklab/unittests/megameklab/ui/generalUnit/BasicInfoViewTest.java b/megameklab/unittests/megameklab/ui/generalUnit/BasicInfoViewTest.java
new file mode 100644
index 000000000..7916fa249
--- /dev/null
+++ b/megameklab/unittests/megameklab/ui/generalUnit/BasicInfoViewTest.java
@@ -0,0 +1,66 @@
+package megameklab.ui.generalUnit;
+
+import megamek.common.*;
+import megamek.common.loaders.BLKFile;
+import megamek.common.loaders.BLKTankFile;
+import megamek.common.loaders.EntityLoadingException;
+import megamek.common.loaders.EntitySavingException;
+import megamek.common.util.BuildingBlock;
+import megameklab.testing.util.InitializeTypes;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+
+import java.io.InputStream;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+@ExtendWith(value = InitializeTypes.class)
+class BasicInfoViewTest {
+
+ // Filenames must be preceded with a slash to load from the testresources path
+ private final String resourcesPath = "/ui/generalUnit/BasicInfoViewTest/";
+
+ @BeforeEach
+ void setUp() {
+ }
+
+ @AfterEach
+ void tearDown() {
+ }
+
+ private Entity loadEntity(String filename) throws EntityLoadingException {
+ String path = resourcesPath + filename;
+ InputStream is = getClass().getResourceAsStream(path);
+ assertNotNull(is);
+ return new MekFileParser(is, filename).getEntity();
+ }
+
+ @Test
+ void testSetTechAdvancementFromEarlyISUnofficial() throws EntityLoadingException, EntitySavingException {
+ String fname = "Puma Assault Tank PAT-001.blk";
+ Entity te = loadEntity(fname);
+
+ // Confirm expected Tech Base (IS) and Tech Level (Simple Intro)
+ int techBase = te.getTechBase();
+ int techLevel = te.getTechLevel();
+ assertEquals(TechAdvancement.TECH_BASE_IS, techBase);
+ assertEquals(TechConstants.T_SIMPLE_INTRO, techLevel);
+
+ // Update Tech Level
+ te.setTechLevel(TechConstants.T_IS_UNOFFICIAL);
+
+ // Convert test entity to BLK block and back to a new entity using BLKFile conversion
+ BLKTankFile blkTankFile = new BLKTankFile(BLKFile.getBlock(te));
+ Entity newTE = blkTankFile.getEntity();
+
+ // Confirm values were saved correctly
+ techBase = newTE.getTechBase();
+ techLevel = newTE.getTechLevel();
+ // Confirm expected Tech Base (IS) and Tech Level (IS Unofficial)
+ assertEquals(TechAdvancement.TECH_BASE_IS, techBase);
+ assertEquals(TechConstants.T_IS_UNOFFICIAL, techLevel);
+ assertFalse(newTE.isClan());
+ }
+}