change

build.gradle.kts

@@ -13,7 +13,7 @@ subprojects {
     apply(plugin = "maven-publish")
 
     group = "de.derioo.javautils"
-    version = "2.2.3"
+    version = "2.2.4"
 
     repositories {
         mavenCentral()

paper/build.gradle.kts

@@ -12,16 +12,16 @@ dependencies {
     implementation(platform("org.junit:junit-bom:5.10.2"))
     implementation("org.junit.jupiter:junit-jupiter")
     implementation("org.assertj:assertj-core:3.26.0")
-    compileOnly("io.papermc.paper:paper-api:1.20.6-R0.1-SNAPSHOT")
-    testImplementation("io.papermc.paper:paper-api:1.20.6-R0.1-SNAPSHOT")
+    implementation("com.github.seeseemelk:MockBukkit-v1.20:3.9.0")
+
+    testImplementation("com.github.seeseemelk:MockBukkit-v1.20:3.9.0")
 }
 
 tasks {
     runServer {
         minecraftVersion("1.20.6")
     }
     test {
-        dependsOn(runServer)
         useJUnitPlatform()
     }
     named<JavaCompile>("compileJava") {

paper/src/test/java/de/derioo/javautils/paper/ItemStackUtilityTest.java

@@ -0,0 +1,44 @@
+package de.derioo.javautils.paper;
+
+import be.seeseemelk.mockbukkit.MockBukkit;
+import be.seeseemelk.mockbukkit.ServerMock;
+import org.bukkit.Material;
+import org.bukkit.inventory.ItemStack;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.io.IOException;
+
+import static de.derioo.javautils.paper.ItemStackUtility.*;
+import static org.assertj.core.api.Assertions.*;
+
+public class ItemStackUtilityTest {
+
+    private ServerMock server;
+    @BeforeEach
+    public void setUp()
+    {
+        server = MockBukkit.mock();
+    }
+
+    @AfterEach
+    public void tearDown()
+    {
+        MockBukkit.unmock();
+    }
+
+    @Test
+    public void testItemStackDecodingAndEncoding() {
+        ItemStack[] itemStacks = new ItemStack[]{new ItemStack(Material.DIAMOND), new ItemStack(Material.DIRT)};
+        try {
+            byte[] bytes = decodeItemStacksToBytes(itemStacks);
+            assertThat(bytes).isNotNull();
+            assertThat(encodeItemStacksFromBytes(bytes)).isEqualTo(itemStacks);
+            assertThat(encodeItemStacksFromBytes(decodeItemStacksToBytes(new ItemStack[]{itemStacks[0]}))).isEqualTo(new ItemStack[]{itemStacks[0]});
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+}

paper/src/test/java/de/derioo/javautils/paper/MaterialUtilityTest.java

@@ -1,16 +1,36 @@
 package de.derioo.javautils.paper;
 
+import be.seeseemelk.mockbukkit.MockBukkit;
+import be.seeseemelk.mockbukkit.ServerMock;
 import org.bukkit.*;
 import org.bukkit.inventory.ItemStack;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
+import java.io.IOException;
 import java.util.*;
 
+import static de.derioo.javautils.paper.ItemStackUtility.decodeItemStacksToBytes;
+import static de.derioo.javautils.paper.ItemStackUtility.encodeItemStacksFromBytes;
 import static de.derioo.javautils.paper.MaterialUtility.*;
 import static org.assertj.core.api.Assertions.assertThat;
 
 public class MaterialUtilityTest {
 
+    private ServerMock server;
+    @BeforeEach
+    public void setUp()
+    {
+        server = MockBukkit.mock();
+    }
+
+    @AfterEach
+    public void tearDown()
+    {
+        MockBukkit.unmock();
+    }
+
     static Random random = new Random();
 
     @Test