From cc7dc0d593b03fa7670a2549e69666210ecc70a8 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Tue, 16 Dec 2025 21:15:08 +0000
Subject: [PATCH 1/2] Initial plan


From c38c376a8daacdf72dfcab3a12c1fc25c0d78187 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Tue, 16 Dec 2025 21:18:38 +0000
Subject: [PATCH 2/2] Add test cases for nether world border behavior

Co-authored-by: tastybento <4407265+tastybento@users.noreply.github.com>
---
 .../listeners/ShowVirtualWorldBorderTest.java | 37 +++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/src/test/java/world/bentobox/border/listeners/ShowVirtualWorldBorderTest.java b/src/test/java/world/bentobox/border/listeners/ShowVirtualWorldBorderTest.java
index c8872e7..131b32e 100644
--- a/src/test/java/world/bentobox/border/listeners/ShowVirtualWorldBorderTest.java
+++ b/src/test/java/world/bentobox/border/listeners/ShowVirtualWorldBorderTest.java
@@ -2,10 +2,12 @@
 
 import static org.junit.jupiter.api.Assertions.assertNotNull;
 import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
 import org.bukkit.Bukkit;
+import org.bukkit.World.Environment;
 import org.bukkit.WorldBorder;
 import org.bukkit.entity.Player;
 import org.bukkit.util.Vector;
@@ -123,4 +125,39 @@ public void testHideBorder() {
         verify(mockPlayer).setWorldBorder(null);
     }
     
+    /**
+     * Test method for {@link world.bentobox.border.listeners.ShowVirtualWorldBorder#showBorder(org.bukkit.entity.Player, world.bentobox.bentobox.database.objects.Island)}.
+     * Tests that border is shown when player is in an island nether world.
+     */
+    @Test
+    public void testShowBorderInIslandNetherWorld() {
+        // Setup: Player is in a nether environment that IS an island nether world
+        when(world.getEnvironment()).thenReturn(Environment.NETHER);
+        when(iwm.isIslandNether(world)).thenReturn(true);
+        when(addon.getPlugin()).thenReturn(plugin);
+        
+        svwb.showBorder(mockPlayer, island);
+        
+        // Verify that the border was set (border should show in island nether worlds)
+        verify(mockPlayer).setWorldBorder(wb);
+        verify(wb).setSize(200.0D);
+    }
+    
+    /**
+     * Test method for {@link world.bentobox.border.listeners.ShowVirtualWorldBorder#showBorder(org.bukkit.entity.Player, world.bentobox.bentobox.database.objects.Island)}.
+     * Tests that border is NOT shown when player is in a non-island nether world.
+     */
+    @Test
+    public void testShowBorderInNonIslandNetherWorld() {
+        // Setup: Player is in a nether environment that is NOT an island nether world
+        when(world.getEnvironment()).thenReturn(Environment.NETHER);
+        when(iwm.isIslandNether(world)).thenReturn(false);
+        when(addon.getPlugin()).thenReturn(plugin);
+        
+        svwb.showBorder(mockPlayer, island);
+        
+        // Verify that the border was NOT set (border should not show in non-island nether worlds)
+        verify(mockPlayer, never()).setWorldBorder(any());
+    }
+    
 }