Compile against Java 17

Jenkinsfile

@@ -36,7 +36,7 @@ properties([
 
 pipeline {
     agent {
-        label 'ts-engine && heavy && java11'
+        label 'ts-engine && heavy && java17'
     }
     stages {
         // declarative pipeline does `checkout scm` automatically when hitting first stage

README.md

@@ -120,7 +120,7 @@ For more information about playing, like hot keys or server hosting, see the [de
 
 ### Alternative Installation Methods
 
-If you already have a Java Development Kit (JDK) installed, you may use a direct download release as an alternative to using the [launcher](https://github.com/MovingBlocks/TerasologyLauncher/releases). Java version 11 is required.
+If you already have a Java Development Kit (JDK) installed, you may use a direct download release as an alternative to using the [launcher](https://github.com/MovingBlocks/TerasologyLauncher/releases). Java version 17 is required.
 
 Direct download stable builds are uploaded to [our release section here on GitHub](https://github.com/MovingBlocks/Terasology/releases) while the cutting-edge develop version can be downloaded direct [here from our Jenkins](https://jenkins.terasology.io/teraorg/job/Terasology/job/Omega/job/master/lastSuccessfulBuild/artifact/distros/omega/build/distributions/TerasologyOmega.zip).
 
@@ -132,7 +132,7 @@ Development is possible on all common platforms (Windows, Linux, MacOS) as long
 ### Requirements
 
 Technical Requirements:
-- Java SE Development Kit (JDK) 11. The CI will verify against this baseline version.
+- Java SE Development Kit (JDK) 17. The CI will verify against this baseline version.
   <br>Using newer Java versions may cause issues (see [#3976](https://github.com/MovingBlocks/Terasology/issues/3976)).
 - Git to clone the repo and commit changes.
 

build-logic/build.gradle.kts

@@ -8,7 +8,7 @@ plugins {
 }
 
 kotlin {
-    jvmToolchain(11)
+    jvmToolchain(17)
 }
 
 repositories {
@@ -37,6 +37,7 @@ dependencies {
     constraints {
         implementation("com.google.guava:guava:31.1-jre")
         implementation("org.javassist:javassist:3.29.0-GA")
+        implementation("net.bytebuddy:bytebuddy:1.14.8")
     }
 
     // graph analysis

build-logic/src/main/kotlin/terasology-metrics.gradle.kts

@@ -32,8 +32,8 @@ dependencies {
     testImplementation("org.junit.jupiter:junit-jupiter-params")
     testRuntimeOnly("org.junit.jupiter:junit-jupiter-engine")
 
-    testImplementation("org.mockito:mockito-inline:3.12.4")
-    testImplementation("org.mockito:mockito-junit-jupiter:3.12.4")
+    testImplementation("org.mockito:mockito-core:5.6.0")
+    testImplementation("org.mockito:mockito-junit-jupiter:5.6.0")
 
     testImplementation("com.google.truth:truth:1.1.3")
     testImplementation("com.google.truth.extensions:truth-java8-extension:1.1.3")

build.gradle

@@ -53,14 +53,13 @@ import org.terasology.gradology.CopyButNeverOverwrite
 import static org.gradle.internal.logging.text.StyledTextOutput.Style
 
 // Test for right version of Java in use for running this script
-assert org.gradle.api.JavaVersion.current().isJava11Compatible()
-if (!(JavaVersion.current() == JavaVersion.VERSION_11)) {
+assert org.gradle.api.JavaVersion.current().isCompatibleWith(JavaVersion.VERSION_17)
+if (!(JavaVersion.current() == JavaVersion.VERSION_17)) {
     def out = services.get(StyledTextOutputFactory).create("an-ouput")
     out.withStyle(Style.FailureHeader).println("""
-WARNING: Compiling with a JDK of not version 11. While some other Javas may be
-safe to use, any newer than 11 may cause issues.
-If you encounter oddities try Java 11.
-See https://github.com/MovingBlocks/Terasology/issues/3976.
+WARNING: Compiling with a JDK of not version 17. While some other Javas may be
+safe to use, any newer than 17 may cause issues.
+If you encounter oddities try Java 17.
 Current detected Java version is ${JavaVersion.current()}
  from vendor ${System.getProperty("java.vendor")}
 located at ${System.getProperty("java.home")}

config/gradle/common.gradle

@@ -14,7 +14,7 @@ javadoc.options.encoding = 'UTF-8'
 
 tasks.withType(JavaCompile) {
     options.encoding = 'UTF-8'
-    options.release.set(11)
+    options.release.set(17)
 }
 
 task sourceJar(type: Jar) {

engine-tests/build.gradle

@@ -72,7 +72,7 @@ dependencies {
 
 
     // Test lib dependencies
-    implementation(platform("org.junit:junit-bom:5.8.1")) {
+    implementation(platform("org.junit:junit-bom:5.10.0")) {
         // junit-bom will set version numbers for the other org.junit dependencies.
     }
     api("org.junit.jupiter:junit-jupiter-api") {
@@ -81,9 +81,14 @@ dependencies {
     api("com.google.truth:truth:1.1.3") {
         because("we provide some helper classes")
     }
-    implementation("org.mockito:mockito-inline:3.12.4") {
+    implementation('org.mockito:mockito-core:5.6.0') {
         because("classes like HeadlessEnvironment use mocks")
     }
+    constraints {
+        implementation("net.bytebuddy:bytebuddy:1.14.8") {
+            because("we need a newer bytebuddy version for Java 17")
+        }
+    }
 
     // See terasology-metrics for other test-only internal dependencies
 }

engine-tests/src/main/java/org/terasology/engine/integrationenvironment/Engines.java

@@ -241,7 +241,11 @@ TerasologyEngine createEngine(TerasologyEngineBuilder terasologyEngineBuilder) t
 
     protected void mockPathManager() {
         PathManager originalPathManager = PathManager.getInstance();
-        pathManager = Mockito.spy(originalPathManager);
+        if (!Mockito.mockingDetails(originalPathManager).isMock()) {
+            pathManager = Mockito.spy(originalPathManager);
+        } else {
+            pathManager = originalPathManager;
+        }
         Mockito.when(pathManager.getModulePaths()).thenReturn(Collections.emptyList());
         pathManagerCleaner = new PathManagerProvider.Cleaner(originalPathManager, pathManager);
         PathManagerProvider.setPathManager(pathManager);

engine-tests/src/test/java/org/terasology/engine/entitySystem/PojoEventSystemTests.java

@@ -191,7 +191,7 @@ public void testEventReceiverRegistration() {
         assertEquals(1, receiver.eventList.size());
     }
 
-    private static class TestEvent extends AbstractConsumableEvent {
+    public static class TestEvent extends AbstractConsumableEvent {
 
     }
 

engine-tests/src/test/java/org/terasology/engine/recording/EventSystemReplayImplTest.java

@@ -169,7 +169,7 @@ public static class Received {
         }
     }
 
-    private static class TestEvent extends AbstractConsumableEvent {
+    public static class TestEvent extends AbstractConsumableEvent {
 
     }
 }

engine-tests/src/test/java/org/terasology/engine/rendering/nui/layouts/CardLayoutTest.java

@@ -10,8 +10,8 @@
 import org.terasology.nui.layouts.CardLayout;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.mockito.Matchers.any;
-import static org.mockito.Matchers.eq;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;

engine-tests/src/test/java/org/terasology/engine/rendering/nui/layouts/ColumnLayoutTest.java

@@ -11,8 +11,8 @@
 import org.terasology.nui.util.RectUtility;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.mockito.Matchers.any;
-import static org.mockito.Matchers.eq;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;

engine-tests/src/test/java/org/terasology/engine/rendering/nui/layouts/RowLayoutTest.java

@@ -11,8 +11,8 @@
 import org.terasology.nui.util.RectUtility;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.mockito.Matchers.any;
-import static org.mockito.Matchers.eq;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;

engine/src/main/java/org/terasology/engine/persistence/internal/AbstractStorageManager.java

@@ -112,7 +112,7 @@ protected byte[] loadChunkZip(Vector3ic chunkPos) {
         Vector3i chunkZipPos = storagePathProvider.getChunkZipPosition(chunkPos);
         Path chunkPath = storagePathProvider.getChunkZipPath(chunkZipPos);
         if (Files.isRegularFile(chunkPath)) {
-            try (FileSystem chunkZip = FileSystems.newFileSystem(chunkPath, null)) {
+            try (FileSystem chunkZip = FileSystems.newFileSystem(chunkPath, (ClassLoader) null)) {
                 Path targetChunk = chunkZip.getPath(storagePathProvider.getChunkFilename(chunkPos));
                 if (Files.isRegularFile(targetChunk)) {
                     chunkData = Files.readAllBytes(targetChunk);

engine/src/main/java/org/terasology/engine/persistence/internal/SaveTransaction.java

@@ -403,7 +403,7 @@ private void writeChunkStores() throws IOException {
                 Path oldChunkZipPath = storagePathProvider.getChunkZipPath(chunkZipPos);
                 final FileSystem zip = chunkZipEntry.getValue();
                 if (Files.isRegularFile(oldChunkZipPath)) {
-                    try (FileSystem oldZip = FileSystems.newFileSystem(oldChunkZipPath, null)) {
+                    try (FileSystem oldZip = FileSystems.newFileSystem(oldChunkZipPath, (ClassLoader) null)) {
                         for (Path root : oldZip.getRootDirectories()) {
                             Files.walkFileTree(root, new SimpleFileVisitor<>() {
                                 @Override