Add a test plugin without a module for the host tests

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

test/file/test_plugin_no_module/index.js

@@ -0,0 +1,8 @@
+// Instance plugin without a module/ folder, for tests that need one.
+export const plugin = {
+	name: "test_plugin_no_module",
+	title: "Test Plugin Without Module",
+	description: "Plugin used to test handling of plugins without a module.",
+
+	instanceEntrypoint: "instance.js",
+};

test/file/test_plugin_no_module/instance.js

@@ -0,0 +1 @@
+export default async function() { }

test/file/test_plugin_no_module/package.json

@@ -0,0 +1,11 @@
+{
+	"name": "test_plugin_no_module",
+	"version": "0.0.1",
+	"description": "Plugin without a Lua module used by the host tests",
+	"private": true,
+	"type": "module",
+	"main": "index.js",
+	"keywords": [
+		"clusterio-plugin"
+	]
+}

test/host/create_scenario.js

@@ -154,7 +154,7 @@ describe("host/create_scenario", function() {
 			await fs.cp(scenario, freeplay, { recursive: true });
 			pluginInfos = await lib.loadPluginInfos(new Map([
 				["research_sync", path.resolve("plugins/research_sync")],
-				["global_chat", path.resolve("plugins/global_chat")],
+				["test_plugin_no_module", path.resolve("test/file/test_plugin_no_module")],
 			]));
 			lib.addPluginConfigFields(pluginInfos);
 			hostConfig = new lib.HostConfig("host", { "host.factorio_directory": factorioDir });

test/host/patch.js

@@ -241,7 +241,7 @@ describe("host/patch", function() {
 		});
 		it("should skip plugins without a module", async function() {
 			const pluginInfos = await lib.loadPluginInfos(
-				new Map([["global_chat", path.resolve("plugins/global_chat")]])
+				new Map([["test_plugin_no_module", path.resolve("test/file/test_plugin_no_module")]])
 			);
 			const modules = await patch.loadModules(pluginInfos);
 			assert.deepEqual([...modules.keys()], ["clusterio"]);