test: add widget proxy tests (batch 1)

src/widgets/watchtower/proxy.test.js

@@ -0,0 +1,64 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+import createMockRes from "test-utils/create-mock-res";
+
+const { httpProxy, getServiceWidget, logger } = vi.hoisted(() => ({
+  httpProxy: vi.fn(),
+  getServiceWidget: vi.fn(),
+  logger: {
+    debug: vi.fn(),
+    error: vi.fn(),
+  },
+}));
+
+vi.mock("utils/logger", () => ({
+  default: () => logger,
+}));
+
+vi.mock("utils/config/service-helpers", () => ({
+  default: getServiceWidget,
+}));
+
+vi.mock("utils/proxy/http", () => ({
+  httpProxy,
+}));
+
+vi.mock("widgets/widgets", () => ({
+  default: {
+    watchtower: {
+      api: "{url}/{endpoint}",
+    },
+  },
+}));
+
+import watchtowerProxyHandler from "./proxy";
+
+describe("widgets/watchtower/proxy", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("parses watchtower metrics and returns a key/value object", async () => {
+    getServiceWidget.mockResolvedValue({ type: "watchtower", url: "http://watch", key: "k" });
+    httpProxy.mockResolvedValueOnce([
+      200,
+      "text/plain",
+      Buffer.from("watchtower_running 1\nfoo 2\nwatchtower_status 3\n"),
+    ]);
+
+    const req = { query: { group: "g", service: "svc", endpoint: "metrics", index: "0" } };
+    const res = createMockRes();
+
+    await watchtowerProxyHandler(req, res);
+
+    expect(httpProxy).toHaveBeenCalledTimes(1);
+    expect(httpProxy.mock.calls[0][0].toString()).toBe("http://watch/metrics");
+    expect(httpProxy.mock.calls[0][1]).toEqual({
+      method: "GET",
+      headers: { Authorization: "Bearer k" },
+    });
+    expect(res.statusCode).toBe(200);
+    expect(res.body).toEqual({ watchtower_running: "1", watchtower_status: "3" });
+    expect(res.setHeader).toHaveBeenCalledWith("Content-Type", "text/plain");
+  });
+});