Fix #8298 (MobBucketItem) and add test mod (#8313)

src/test/java/net/minecraftforge/debug/item/CustomMobBucketTest.java

@@ -0,0 +1,57 @@
+/*
+ * Minecraft Forge
+ * Copyright (c) 2016-2021.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+package net.minecraftforge.debug.item;
+
+import net.minecraft.sounds.SoundEvents;
+import net.minecraft.world.entity.EntityType;
+import net.minecraft.world.item.CreativeModeTab;
+import net.minecraft.world.item.Item;
+import net.minecraft.world.item.MobBucketItem;
+import net.minecraft.world.level.material.Fluids;
+import net.minecraftforge.eventbus.api.IEventBus;
+import net.minecraftforge.fml.common.Mod;
+import net.minecraftforge.fml.javafmlmod.FMLJavaModLoadingContext;
+import net.minecraftforge.registries.DeferredRegister;
+import net.minecraftforge.registries.ForgeRegistries;
+import net.minecraftforge.registries.RegistryObject;
+
+@Mod(CustomMobBucketTest.MODID)
+public class CustomMobBucketTest
+{
+    public static final String MODID = "custom_mob_bucket_test";
+    public static final DeferredRegister<Item> ITEMS = DeferredRegister.create(ForgeRegistries.ITEMS, MODID);
+
+    public static final boolean ENABLED = true;
+
+    public static final RegistryObject<Item> COW_BUCKET = ITEMS.register("cow_bucket", () -> new MobBucketItem(
+        () -> EntityType.COW,
+        () -> Fluids.WATER,
+        () -> SoundEvents.BUCKET_EMPTY_FISH,
+        (new Item.Properties()).stacksTo(1).tab(CreativeModeTab.TAB_MISC)));
+
+    public CustomMobBucketTest()
+    {
+        if (ENABLED)
+        {
+            IEventBus modEventBus = FMLJavaModLoadingContext.get().getModEventBus();
+            ITEMS.register(modEventBus);
+        }
+    }
+}