@EventHandler(priority = EventPriority.NORMAL)
public void onEntityPortalTeleport(EntityPortalEvent event) {
    if (!(event.getEntity() instanceof Item))
        return;

    ConsoleLogger.debug("[ENTITYPORTALEVENT] A '" + event.getEntity().getName() + "' is going through a portal!");

    String worldFrom = event.getFrom().getWorld().getName();

    // For some reason, event.getTo().getWorld().getName() is sometimes null
    if (event.getTo() == null || event.getTo().getWorld() == null) { // Not gonna bother checking name; its already a WTF that this is needed
        ConsoleLogger.debug("[ENTITYPORTALEVENT] event.getTo().getWorld().getName() would throw a NPE! Exiting method!");
        return;
    }

    String worldTo = event.getTo().getWorld().getName();
    Group from = groupManager.getGroupFromWorld(worldFrom);
    Group to = groupManager.getGroupFromWorld(worldTo);

    // If the groups are different, cancel the event
    if (!from.equals(to)) {
        ConsoleLogger.debug("[ENTITYPORTALEVENT] Group '" + from.getName() + "' and group '" + to.getName() + "' are different! Canceling event!");
        event.setCancelled(true);
    }
}
 

@Test
public void shouldTeleportBecauseNotItem() {
    // given
    Pig entity = mock(Pig.class);
    World world = mock(World.class);
    Location from = new Location(world, 1, 2, 3);
    World worldNether = mock(World.class);
    Location to = new Location(worldNether, 1, 2, 3);
    EntityPortalEvent event = new EntityPortalEvent(entity, from, to, mock(TravelAgent.class));

    // when
    listener.onEntityPortalTeleport(event);

    // then
    assertThat(event.isCancelled(), equalTo(false));
}
 

@Test
public void shouldTeleportBecauseSameGroup() {
    // given
    Group group = mockGroup("test_group", GameMode.SURVIVAL, false);

    Item entity = mock(Item.class);

    World world = mock(World.class);
    given(world.getName()).willReturn("test_group");
    Location from = new Location(world, 1, 2, 3);

    World worldNether = mock(World.class);
    given(worldNether.getName()).willReturn("test_group_nether");
    Location to = new Location(worldNether, 1, 2, 3);

    given(groupManager.getGroupFromWorld("test_group")).willReturn(group);
    given(groupManager.getGroupFromWorld("test_group_nether")).willReturn(group);

    EntityPortalEvent event = new EntityPortalEvent(entity, from, to, mock(TravelAgent.class));

    // when
    listener.onEntityPortalTeleport(event);

    // then
    assertThat(event.isCancelled(), equalTo(false));
}
 

@EventHandler(priority = EventPriority.NORMAL)
public void onEntityPortalTeleport(EntityPortalEvent event) {
    if (!(event.getEntity() instanceof Item))
        return;

    ConsoleLogger.debug("[ENTITYPORTALEVENT] A '" + event.getEntity().getName() + "' is going through a portal!");

    String worldFrom = event.getFrom().getWorld().getName();

    // For some reason, event.getTo().getWorld().getName() is sometimes null
    if (event.getTo() == null || event.getTo().getWorld() == null) { // Not gonna bother checking name; its already a WTF that this is needed
        ConsoleLogger.debug("[ENTITYPORTALEVENT] event.getTo().getWorld().getName() would throw a NPE! Exiting method!");
        return;
    }

    String worldTo = event.getTo().getWorld().getName();
    Group from = groupManager.getGroupFromWorld(worldFrom);
    Group to = groupManager.getGroupFromWorld(worldTo);

    // If the groups are different, cancel the event
    if (!from.equals(to)) {
        ConsoleLogger.debug("[ENTITYPORTALEVENT] Group '" + from.getName() + "' and group '" + to.getName() + "' are different! Canceling event!");
        event.setCancelled(true);
    }
}
 

@Test
public void shouldTeleportBecauseNotItem() {
    // given
    Pig entity = mock(Pig.class);
    World world = mock(World.class);
    Location from = new Location(world, 1, 2, 3);
    World worldNether = mock(World.class);
    Location to = new Location(worldNether, 1, 2, 3);
    EntityPortalEvent event = new EntityPortalEvent(entity, from, to, mock(TravelAgent.class));

    // when
    listener.onEntityPortalTeleport(event);

    // then
    assertThat(event.isCancelled(), equalTo(false));
}
 

@Test
public void shouldTeleportBecauseSameGroup() {
    // given
    Group group = mockGroup("test_group", GameMode.SURVIVAL, false);

    Item entity = mock(Item.class);

    World world = mock(World.class);
    given(world.getName()).willReturn("test_group");
    Location from = new Location(world, 1, 2, 3);

    World worldNether = mock(World.class);
    given(worldNether.getName()).willReturn("test_group_nether");
    Location to = new Location(worldNether, 1, 2, 3);

    given(groupManager.getGroupFromWorld("test_group")).willReturn(group);
    given(groupManager.getGroupFromWorld("test_group_nether")).willReturn(group);

    EntityPortalEvent event = new EntityPortalEvent(entity, from, to, mock(TravelAgent.class));

    // when
    listener.onEntityPortalTeleport(event);

    // then
    assertThat(event.isCancelled(), equalTo(false));
}
 

@Test
public void shouldNotTeleportBecauseDifferentGroups() {
    // given
    Group group = mockGroup("test_group", GameMode.SURVIVAL, false);
    Group otherGroup = mockGroup("other_group", GameMode.SURVIVAL, false);

    Item entity = mock(Item.class);

    World world = mock(World.class);
    given(world.getName()).willReturn("test_group");
    Location from = new Location(world, 1, 2, 3);

    World worldNether = mock(World.class);
    given(worldNether.getName()).willReturn("other_group_nether");
    Location to = new Location(worldNether, 1, 2, 3);

    given(groupManager.getGroupFromWorld("test_group")).willReturn(group);
    given(groupManager.getGroupFromWorld("other_group_nether")).willReturn(otherGroup);

    EntityPortalEvent event = new EntityPortalEvent(entity, from, to, mock(TravelAgent.class));

    // when
    listener.onEntityPortalTeleport(event);

    // then
    assertThat(event.isCancelled(), equalTo(true));
}
 

@EventHandler(priority = EventPriority.HIGH, ignoreCancelled = true)
public void on(EntityPortalEvent event) {
    if (isEnabled()) return;
    if (event.getTo() == null) return;

    if (event.getTo().getWorld().getEnvironment() == World.Environment.THE_END) {
        event.setCancelled(true);
    }
}
 

@EventHandler(priority = EventPriority.HIGH, ignoreCancelled = true)
public void on(EntityPortalEvent event) {
    if (isEnabled()) return;
    if (event.getTo() == null) return;

    if (event.getTo().getWorld().getEnvironment() == World.Environment.NETHER) {
        event.setCancelled(true);
    }
}
 

@Test
public void shouldNotTeleportBecauseDifferentGroups() {
    // given
    Group group = mockGroup("test_group", GameMode.SURVIVAL, false);
    Group otherGroup = mockGroup("other_group", GameMode.SURVIVAL, false);

    Item entity = mock(Item.class);

    World world = mock(World.class);
    given(world.getName()).willReturn("test_group");
    Location from = new Location(world, 1, 2, 3);

    World worldNether = mock(World.class);
    given(worldNether.getName()).willReturn("other_group_nether");
    Location to = new Location(worldNether, 1, 2, 3);

    given(groupManager.getGroupFromWorld("test_group")).willReturn(group);
    given(groupManager.getGroupFromWorld("other_group_nether")).willReturn(otherGroup);

    EntityPortalEvent event = new EntityPortalEvent(entity, from, to, mock(TravelAgent.class));

    // when
    listener.onEntityPortalTeleport(event);

    // then
    assertThat(event.isCancelled(), equalTo(true));
}
 

/**
 * This handles non-player portal use
 * Currently disables portal use by entities
 * 
 * @param event
 */
@EventHandler(priority = EventPriority.NORMAL, ignoreCancelled = true)
public void onEntityPortal(final EntityPortalEvent event) {
    if (DEBUG)
        plugin.getLogger().info("DEBUG: nether portal entity " + event.getFrom().getBlock().getType());
    // If the nether is disabled then quit immediately
    if (!Settings.createNether || ASkyBlock.getNetherWorld() == null) {
        if (DEBUG)
            plugin.getLogger().info("DEBUG: Disabled nether: Settings create nether = " + Settings.createNether + " " + (ASkyBlock.getNetherWorld() == null ? "Nether world is null": "Nether world is not null"));
        return;
    }
    // Disable entity portal transfer due to dupe glitching
    event.setCancelled(true);
}
 

@EventHandler
public void portalPickupSafeguard(EntityPortalEvent event) {
    if (EntityTracker.isItemVisualEffect(event.getEntity()) || EntityTracker.isEliteMob(event.getEntity()))
        event.setCancelled(true);
}
 

@EventHandler(ignoreCancelled = true)
void onEntityPortalTeleport(EntityPortalEvent event) {
	if (plugin.isShopkeeper(event.getEntity())) {
		event.setCancelled(true);
	}
}