Foundation for running tests

Author: robotgryphon

build.gradle.kts

@@ -1,4 +1,5 @@
 plugins {
+    id("idea")
     id("java")
     id("net.neoforged.gradle.userdev") version "7.0.96"
 }
@@ -17,10 +18,19 @@ repositories {
     mavenCentral()
 }
 
+idea {
+
+}
+
+minecraft.modIdentifier("spatial")
+
 runs.create("gameTestServer") {
     this.gameTest()
     systemProperty("forge.enabledGameTestNamespaces", "spatial")
+    environmentVariables("TEST_RESOURCES", project.file("src/test/resources").path)
+
     modSource(sourceSets.main.get())
+    modSource(sourceSets.test.get())
 }
 
 dependencies {

src/main/resources/META-INF/MANIFEST.MF

@@ -0,0 +1,2 @@
+FMLModType: GAMELIBRARY
+Automatic-Module-Name: spatial

src/test/java/dev/compactmods/spatial/SpatialTestMod.java

@@ -0,0 +1,60 @@
+package dev.compactmods.spatial;
+
+import com.google.common.collect.ImmutableSet;
+import net.minecraft.server.MinecraftServer;
+import net.minecraft.server.packs.PackType;
+import net.minecraft.server.packs.repository.FolderRepositorySource;
+import net.minecraft.server.packs.repository.PackSource;
+import net.minecraft.world.level.validation.DirectoryValidator;
+import net.neoforged.bus.EventBus;
+import net.neoforged.bus.api.IEventBus;
+import net.neoforged.fml.ModLoadingContext;
+import net.neoforged.fml.common.Mod;
+import net.neoforged.fml.javafmlmod.FMLJavaModLoadingContext;
+import net.neoforged.neoforge.common.NeoForge;
+import net.neoforged.neoforge.event.server.ServerStartedEvent;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+import java.nio.file.Path;
+import java.util.concurrent.ExecutionException;
+
+@Mod("spatial")
+public class SpatialTestMod {
+
+    private static final Logger LOG = LogManager.getLogger();
+
+    public SpatialTestMod() {
+        NeoForge.EVENT_BUS.addListener(this::onServerStarted);
+    }
+
+    public void onServerStarted(final ServerStartedEvent evt) {
+        final MinecraftServer server = evt.getServer();
+
+        // Add "test/resources" as a resource pack to the pack repository
+        final var packs = server.getPackRepository();
+
+        final String test_resources = System.getenv("TEST_RESOURCES");
+        if(test_resources != null) {
+
+            final var testPack = new FolderRepositorySource(Path.of(test_resources), PackType.SERVER_DATA, PackSource.DEFAULT, new DirectoryValidator(l -> true));
+            packs.addPackFinder(testPack);
+            packs.reload();
+
+            // add "file/resources" to selected pack list
+            final ImmutableSet<String> toSelect = ImmutableSet.<String>builder()
+                    .addAll(packs.getSelectedIds())
+                    .add("file/test_pack")
+                    .build();
+
+            packs.setSelected(toSelect);
+
+            try {
+                server.reloadResources(packs.getSelectedIds()).get();
+
+            } catch (InterruptedException | ExecutionException e) {
+                LOG.error("Failed to reload test resource packs.", e);
+            }
+        }
+    }
+}

src/test/resources/META-INF/mods.toml

@@ -0,0 +1,16 @@
+modLoader = "javafml"
+loaderVersion = "[2,)"
+license = "MIT"
+
+[[mods]]
+modId = "spatial"
+version = "9.9.9"
+displayName = "Spatial Tests"
+description = '''Spatial Tests'''
+
+[[dependencies.spatial]]
+modId = "minecraft"
+type = "required"
+versionRange = "[1.20.4,1.21)"
+ordering = "NONE"
+side = "BOTH"