Add gametest for startup configs

Requires neoforged/FancyModLoader#150 (comment) to be merged before gametest merge

tests/src/main/java/net/neoforged/neoforge/debug/fml/StartupConfigTest.java

@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) NeoForged and contributors
+ * SPDX-License-Identifier: LGPL-2.1-only
+ */
+
+package net.neoforged.neoforge.debug.fml;
+
+import net.minecraft.gametest.framework.GameTest;
+import net.neoforged.fml.ModContainer;
+import net.neoforged.fml.common.Mod;
+import net.neoforged.fml.config.ModConfig;
+import net.neoforged.neoforge.common.ModConfigSpec;
+import net.neoforged.testframework.annotation.TestHolder;
+import net.neoforged.testframework.gametest.EmptyTemplate;
+import net.neoforged.testframework.gametest.ExtendedGameTestHelper;
+
+public class StartupConfigTest {
+    private static final String MOD_ID = "startup_config_test";
+    private static boolean WasLoadedAtInitStartupConfig = false;
+    private static boolean WasLoadedAtInitCommonConfig = false;
+    private static boolean WasLoadedAtInitServerConfig = false;
+    private static boolean WasLoadedAtInitClientConfig = false;
+
+    @GameTest
+    @EmptyTemplate
+    @TestHolder(description = "Tests the initial loading state of configs")
+    static void testStartupConfigs(ExtendedGameTestHelper helper) {
+        helper.assertTrue(WasLoadedAtInitStartupConfig, "Startup Config was supposed to be loaded at mod init.");
+        helper.assertFalse(WasLoadedAtInitCommonConfig, "Common Config was NOT supposed to be loaded at mod init.");
+        helper.assertFalse(WasLoadedAtInitServerConfig, "Server Config was NOT supposed to be loaded at mod init.");
+        helper.assertFalse(WasLoadedAtInitClientConfig, "Client Config was NOT supposed to be loaded at mod init.");
+        helper.succeed();
+    }
+
+    @Mod(value = MOD_ID)
+    public static class StartupConfigTestMod {
+        public StartupConfigTestMod(ModContainer modContainer) {
+            modContainer.registerConfig(ModConfig.Type.STARTUP, StartupConfig.SPEC);
+            modContainer.registerConfig(ModConfig.Type.COMMON, CommonConfig.SPEC);
+            modContainer.registerConfig(ModConfig.Type.SERVER, ServerConfig.SPEC);
+            modContainer.registerConfig(ModConfig.Type.CLIENT, ClientConfig.SPEC);
+            WasLoadedAtInitStartupConfig = StartupConfig.SPEC.isLoaded();
+            WasLoadedAtInitCommonConfig = CommonConfig.SPEC.isLoaded();
+            WasLoadedAtInitServerConfig = ServerConfig.SPEC.isLoaded();
+            WasLoadedAtInitClientConfig = ClientConfig.SPEC.isLoaded();
+        }
+
+        public static class StartupConfig {
+            private static final ModConfigSpec.Builder BUILDER = new ModConfigSpec.Builder();
+            private static final ModConfigSpec.BooleanValue TEST_MARKER = BUILDER.define("testMarker1", true);
+            static final ModConfigSpec SPEC = BUILDER.build();
+        }
+
+        public static class CommonConfig {
+            private static final ModConfigSpec.Builder BUILDER = new ModConfigSpec.Builder();
+            private static final ModConfigSpec.BooleanValue TEST_MARKER = BUILDER.define("testMarker2", true);
+            static final ModConfigSpec SPEC = BUILDER.build();
+        }
+
+        public static class ServerConfig {
+            private static final ModConfigSpec.Builder BUILDER = new ModConfigSpec.Builder();
+            private static final ModConfigSpec.BooleanValue TEST_MARKER = BUILDER.define("testMarker3", true);
+            static final ModConfigSpec SPEC = BUILDER.build();
+        }
+
+        public static class ClientConfig {
+            private static final ModConfigSpec.Builder BUILDER = new ModConfigSpec.Builder();
+            private static final ModConfigSpec.BooleanValue TEST_MARKER = BUILDER.define("testMarker4", true);
+            static final ModConfigSpec SPEC = BUILDER.build();
+        }
+    }
+}

tests/src/main/resources/META-INF/neoforge.mods.toml

@@ -35,7 +35,10 @@ license="LGPL v2.1"
     modId="finalize_spawn_fix_test"
 
 [[mods]]
-    modId="multiple_entrypoints_test"
+modId="multiple_entrypoints_test"
+
+[[mods]]
+    modId="startup_config_test"
 
 [[mods]]
     modId="ordered_test_1"