test: add widget proxy tests (batch 5)

src/widgets/apcups/proxy.test.js

@@ -0,0 +1,88 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+import createMockRes from "test-utils/create-mock-res";
+
+function encodeLine(line) {
+  const buf = Buffer.alloc(2 + line.length);
+  buf.writeUInt16BE(line.length, 0);
+  buf.write(line, 2, "ascii");
+  return buf;
+}
+
+const { getServiceWidget, logger } = vi.hoisted(() => ({
+  getServiceWidget: vi.fn(),
+  logger: { debug: vi.fn(), error: vi.fn() },
+}));
+
+vi.mock("utils/config/service-helpers", () => ({
+  default: getServiceWidget,
+}));
+vi.mock("utils/logger", () => ({
+  default: () => logger,
+}));
+
+vi.mock("node:net", () => {
+  class FakeSocket {
+    constructor() {
+      this._handlers = new Map();
+    }
+    setTimeout() {}
+    connect() {
+      queueMicrotask(() => this._emit("connect"));
+    }
+    on(event, cb) {
+      const set = this._handlers.get(event) ?? new Set();
+      set.add(cb);
+      this._handlers.set(event, set);
+    }
+    write() {
+      const response = Buffer.concat([
+        encodeLine("STATUS : ONLINE"),
+        encodeLine("LOADPCT : 10.0"),
+        encodeLine("BCHARGE : 99.0"),
+        encodeLine("TIMELEFT : 12.3"),
+        encodeLine("END APC"),
+        Buffer.from([0x00, 0x00]),
+      ]);
+      queueMicrotask(() => this._emit("data", response));
+    }
+    end() {}
+    destroy() {}
+    _emit(event, payload) {
+      const set = this._handlers.get(event);
+      if (!set) return;
+      set.forEach((cb) => cb(payload));
+    }
+  }
+
+  return {
+    default: {
+      Socket: FakeSocket,
+    },
+  };
+});
+
+import apcupsProxyHandler from "./proxy";
+
+describe("widgets/apcups/proxy", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("parses the APCUPSD status response into JSON", async () => {
+    getServiceWidget.mockResolvedValue({ url: "http://127.0.0.1:3551" });
+
+    const req = { query: { group: "g", service: "svc", index: "0" } };
+    const res = createMockRes();
+
+    await apcupsProxyHandler(req, res);
+
+    expect(res.statusCode).toBe(200);
+    expect(res.body).toEqual({
+      status: "ONLINE",
+      load: "10.0",
+      bcharge: "99.0",
+      timeleft: "12.3",
+    });
+  });
+});