[Init] Initial commit - NetMesh terminal manager

electron/plugins/viewPreload.test.cjs

@@ -0,0 +1,65 @@
+"use strict";
+
+const assert = require("node:assert/strict");
+const fs = require("node:fs");
+const path = require("node:path");
+const test = require("node:test");
+const vm = require("node:vm");
+
+function loadPreload(environment) {
+  const listeners = new Map();
+  let exposed;
+  const ipcRenderer = {
+    invoke(channel) {
+      assert.equal(channel, "netcatty-plugin-view:get-environment");
+      return Promise.resolve(environment);
+    },
+    on(channel, listener) { listeners.set(channel, listener); },
+    removeListener() {},
+  };
+  const contextBridge = {
+    exposeInMainWorld(name, value) {
+      assert.equal(name, "netcattyView");
+      exposed = value;
+    },
+  };
+  const source = fs.readFileSync(path.join(__dirname, "runtime", "viewPreload.cjs"), "utf8");
+  vm.runInNewContext(source, {
+    Object,
+    Promise,
+    queueMicrotask,
+    require(moduleName) {
+      if (moduleName === "electron") return { contextBridge, ipcRenderer };
+      throw new Error(`Unexpected preload dependency: ${moduleName}`);
+    },
+  }, { filename: "viewPreload.cjs" });
+  return {
+    api: exposed,
+    emitEnvironment(value) {
+      listeners.get("netcatty-plugin-view:environment")?.({}, value);
+    },
+  };
+}
+
+test("custom view environment subscriptions replay the latest host state", async () => {
+  const initial = { locale: "en", theme: "light", reducedMotion: false, highContrast: false };
+  const next = { ...initial, locale: "zh-CN", theme: "dark" };
+  const preload = loadPreload(initial);
+  preload.emitEnvironment(next);
+  const received = [];
+
+  const subscription = preload.api.onDidChangeEnvironment((value) => received.push(value));
+  await new Promise((resolve) => setImmediate(resolve));
+  assert.deepEqual(received, [next]);
+  subscription.dispose();
+});
+
+test("custom view environment subscriptions recover through the host getter", async () => {
+  const initial = { locale: "en", theme: "system", reducedMotion: false, highContrast: false };
+  const preload = loadPreload(initial);
+  const received = [];
+
+  preload.api.onDidChangeEnvironment((value) => received.push(value));
+  await new Promise((resolve) => setImmediate(resolve));
+  assert.deepEqual(received, [initial]);
+});