Add server-free plugin behavior tests

src/test/java/com/majinnaibu/bukkitplugins/metropolis/PlayerHomeTest.java

@@ -0,0 +1,27 @@
+package com.majinnaibu.bukkitplugins.metropolis;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.UUID;
+
+import org.junit.jupiter.api.Test;
+
+import com.sk89q.worldedit.math.BlockVector3;
+
+class PlayerHomeTest {
+	@Test
+	void buildsUuidBasedRegionIdentityAndPreservesDisplayName() {
+		UUID playerId = UUID.fromString("123e4567-e89b-12d3-a456-426614174000");
+		PlayerHome home = new PlayerHome(
+				playerId,
+				"PlayerName",
+				2,
+				BlockVector3.at(1, 2, 3),
+				BlockVector3.at(4, 5, 6));
+
+		assertEquals(playerId, home.getPlayerId());
+		assertEquals("PlayerName", home.getPlayerName());
+		assertEquals(2, home.getNumber());
+		assertEquals("h_2_" + playerId, home.getRegionName());
+	}
+}