From 116cb9a1bce6b0aa51132be2950b1e6c6ecf73a0 Mon Sep 17 00:00:00 2001
From: Nathan Wolf <nathan@elmakers.com>
Date: Wed, 26 Sep 2018 17:21:53 -0700
Subject: [PATCH] SPIGOT-4399: Add attribute modifier equality test

---
 .../craftbukkit/inventory/ItemMetaTest.java   | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/src/test/java/org/bukkit/craftbukkit/inventory/ItemMetaTest.java b/src/test/java/org/bukkit/craftbukkit/inventory/ItemMetaTest.java
index 00f89f2296..d4f8e8c30c 100644
--- a/src/test/java/org/bukkit/craftbukkit/inventory/ItemMetaTest.java
+++ b/src/test/java/org/bukkit/craftbukkit/inventory/ItemMetaTest.java
@@ -6,6 +6,8 @@ import static org.hamcrest.Matchers.*;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
+import java.util.UUID;
+
 import net.minecraft.server.Block;
 import net.minecraft.server.IRegistry;
 import net.minecraft.server.ITileEntity;
@@ -21,6 +23,8 @@ import org.bukkit.FireworkEffect;
 import org.bukkit.Material;
 import org.bukkit.FireworkEffect.Type;
 import org.bukkit.NamespacedKey;
+import org.bukkit.attribute.Attribute;
+import org.bukkit.attribute.AttributeModifier;
 import org.bukkit.block.banner.Pattern;
 import org.bukkit.block.banner.PatternType;
 import org.bukkit.craftbukkit.inventory.ItemStackTest.StackProvider;
@@ -320,6 +324,26 @@ public class ItemMetaTest extends AbstractTestingBase {
         }
     }
 
+    @Test
+    public void testAttributeModifiers() {
+        UUID sameUUID = UUID.randomUUID();
+        ItemMeta itemMeta = Bukkit.getItemFactory().getItemMeta(Material.DIAMOND_PICKAXE);
+        itemMeta.addAttributeModifier(Attribute.GENERIC_ATTACK_SPEED, new AttributeModifier(sameUUID, "Test Modifier", 10, AttributeModifier.Operation.ADD_NUMBER));
+
+        ItemMeta equalMeta = Bukkit.getItemFactory().getItemMeta(Material.DIAMOND_PICKAXE);
+        equalMeta.addAttributeModifier(Attribute.GENERIC_ATTACK_SPEED, new AttributeModifier(sameUUID, "Test Modifier", 10, AttributeModifier.Operation.ADD_NUMBER));
+
+        assertThat(itemMeta.equals(equalMeta), is(true));
+
+        ItemMeta itemMeta2 = Bukkit.getItemFactory().getItemMeta(Material.DIAMOND_PICKAXE);
+        itemMeta2.addAttributeModifier(Attribute.GENERIC_ATTACK_SPEED, new AttributeModifier(sameUUID, "Test Modifier", 10, AttributeModifier.Operation.ADD_NUMBER));
+
+        ItemMeta notEqualMeta2 = Bukkit.getItemFactory().getItemMeta(Material.DIAMOND_PICKAXE);
+        notEqualMeta2.addAttributeModifier(Attribute.GENERIC_ATTACK_SPEED, new AttributeModifier(sameUUID, "Test Modifier", 11, AttributeModifier.Operation.ADD_NUMBER));
+
+        assertThat(itemMeta2.equals(notEqualMeta2), is(false));
+    }
+
     private void downCastTest(final StackWrapper provider) {
         final String name = provider.toString();
         final ItemStack blank = new ItemStack(Material.STONE);