add command registration testing mod, close #143

src/test/java/net/fabricmc/fabric/commands/CommandMod.java

@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2016, 2017, 2018 FabricMC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package net.fabricmc.fabric.commands;
+
+import com.mojang.brigadier.Command;
+import com.mojang.brigadier.builder.LiteralArgumentBuilder;
+import net.fabricmc.api.ModInitializer;
+import net.fabricmc.fabric.api.registry.CommandRegistry;
+import net.minecraft.server.command.CommandManager;
+import net.minecraft.text.StringTextComponent;
+
+public class CommandMod implements ModInitializer {
+	@Override
+	public void onInitialize() {
+		CommandRegistry.INSTANCE.register(false, (dispatcher) -> dispatcher.register(
+			CommandManager.literal("fabric_test")
+			.executes(c -> {
+				c.getSource().sendFeedback(new StringTextComponent("Command works!"), false);
+				return Command.SINGLE_SUCCESS;
+			})
+		));
+
+		CommandRegistry.INSTANCE.register(true, (dispatcher) -> dispatcher.register(
+			CommandManager.literal("fabric_test_dedicated")
+				.executes(c -> {
+					c.getSource().sendFeedback(new StringTextComponent("Command works!"), false);
+					return Command.SINGLE_SUCCESS;
+				})
+		));
+	}
+}