Chore: homepage tests (#6278)

src/__tests__/pages/api/ping.test.js

@@ -0,0 +1,80 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+import createMockRes from "test-utils/create-mock-res";
+
+const { getServiceItem, ping, logger } = vi.hoisted(() => ({
+  getServiceItem: vi.fn(),
+  ping: { probe: vi.fn() },
+  logger: { debug: vi.fn() },
+}));
+
+vi.mock("utils/config/service-helpers", () => ({
+  getServiceItem,
+}));
+
+vi.mock("utils/logger", () => ({
+  default: () => logger,
+}));
+
+vi.mock("ping", () => ({
+  promise: ping,
+}));
+
+import handler from "pages/api/ping";
+
+describe("pages/api/ping", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("returns 400 when service item isn't found", async () => {
+    getServiceItem.mockResolvedValueOnce(null);
+
+    const req = { query: { groupName: "g", serviceName: "s" } };
+    const res = createMockRes();
+
+    await handler(req, res);
+
+    expect(res.statusCode).toBe(400);
+    expect(res.body.error).toContain("Unable to find service");
+  });
+
+  it("returns 400 when ping host isn't configured", async () => {
+    getServiceItem.mockResolvedValueOnce({ ping: "" });
+
+    const req = { query: { groupName: "g", serviceName: "s" } };
+    const res = createMockRes();
+
+    await handler(req, res);
+
+    expect(res.statusCode).toBe(400);
+    expect(res.body.error).toBe("No ping host given");
+  });
+
+  it("pings the hostname extracted from a URL", async () => {
+    getServiceItem.mockResolvedValueOnce({ ping: "http://example.com:1234/path" });
+    ping.probe.mockResolvedValueOnce({ alive: true });
+
+    const req = { query: { groupName: "g", serviceName: "s" } };
+    const res = createMockRes();
+
+    await handler(req, res);
+
+    expect(ping.probe).toHaveBeenCalledWith("example.com");
+    expect(res.statusCode).toBe(200);
+    expect(res.body).toEqual({ alive: true });
+  });
+
+  it("returns 400 when ping throws", async () => {
+    getServiceItem.mockResolvedValueOnce({ ping: "example.com" });
+    ping.probe.mockRejectedValueOnce(new Error("nope"));
+
+    const req = { query: { groupName: "g", serviceName: "s" } };
+    const res = createMockRes();
+
+    await handler(req, res);
+
+    expect(res.statusCode).toBe(400);
+    expect(res.body.error).toContain("Error attempting ping");
+  });
+});