test: align api route test filenames with route files

src/pages/api/kubernetes/stats/[...service].test.js

@@ -0,0 +1,148 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+import createMockRes from "test-utils/create-mock-res";
+
+const { coreApi, metricsApi, kc, getKubeConfig, parseCpu, parseMemory, logger } = vi.hoisted(() => {
+  const coreApi = { listNamespacedPod: vi.fn() };
+  const metricsApi = { getPodMetrics: vi.fn() };
+  const kc = { makeApiClient: vi.fn(() => coreApi) };
+
+  const getKubeConfig = vi.fn();
+  const parseCpu = vi.fn();
+  const parseMemory = vi.fn();
+  const logger = { error: vi.fn() };
+
+  return { coreApi, metricsApi, kc, getKubeConfig, parseCpu, parseMemory, logger };
+});
+
+vi.mock("@kubernetes/client-node", () => ({
+  CoreV1Api: class CoreV1Api {},
+  Metrics: class Metrics {
+    constructor() {
+      return metricsApi;
+    }
+  },
+}));
+
+vi.mock("../../../../utils/config/kubernetes", () => ({
+  getKubeConfig,
+}));
+
+vi.mock("../../../../utils/kubernetes/utils", () => ({
+  parseCpu,
+  parseMemory,
+}));
+
+vi.mock("../../../../utils/logger", () => ({
+  default: () => logger,
+}));
+
+import handler from "./[...service]";
+
+describe("pages/api/kubernetes/stats/[...service]", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("returns 400 when kubernetes parameters are missing", async () => {
+    const req = { query: { service: [] } };
+    const res = createMockRes();
+
+    await handler(req, res);
+
+    expect(res.statusCode).toBe(400);
+    expect(res.body.error).toContain("kubernetes query parameters");
+  });
+
+  it("returns 500 when no kube config is available", async () => {
+    getKubeConfig.mockReturnValueOnce(null);
+
+    const req = { query: { service: ["ns", "app"] } };
+    const res = createMockRes();
+
+    await handler(req, res);
+
+    expect(res.statusCode).toBe(500);
+    expect(res.body.error).toContain("No kubernetes configuration");
+  });
+
+  it("returns 404 when no pods are found", async () => {
+    getKubeConfig.mockReturnValueOnce(kc);
+    coreApi.listNamespacedPod.mockResolvedValueOnce({ items: [] });
+
+    const req = { query: { service: ["ns", "app"] } };
+    const res = createMockRes();
+
+    await handler(req, res);
+
+    expect(res.statusCode).toBe(404);
+    expect(res.body.error).toContain("no pods found");
+  });
+
+  it("returns limits even when metrics are not available yet", async () => {
+    getKubeConfig.mockReturnValueOnce(kc);
+    parseCpu.mockImplementation((v) => (v === "500m" ? 0.5 : 0));
+    parseMemory.mockImplementation((v) => (v === "1Gi" ? 1024 : 0));
+
+    coreApi.listNamespacedPod.mockResolvedValueOnce({
+      items: [
+        {
+          metadata: { name: "p1" },
+          spec: { containers: [{ resources: { limits: { cpu: "500m", memory: "1Gi" } } }] },
+        },
+      ],
+    });
+    metricsApi.getPodMetrics.mockRejectedValueOnce({ statusCode: 404 });
+
+    const req = { query: { service: ["ns", "app"] } };
+    const res = createMockRes();
+
+    await handler(req, res);
+
+    expect(res.statusCode).toBe(200);
+    expect(res.body.stats).toEqual(
+      expect.objectContaining({
+        cpu: 0,
+        mem: 0,
+        cpuLimit: 0.5,
+        memLimit: 1024,
+        cpuUsage: 0,
+        memUsage: 0,
+      }),
+    );
+  });
+
+  it("returns usage calculated from pod metrics", async () => {
+    getKubeConfig.mockReturnValueOnce(kc);
+    parseCpu.mockImplementation((v) => (v === "100m" ? 0.1 : v === "500m" ? 0.5 : 0));
+    parseMemory.mockImplementation((v) => (v === "256Mi" ? 256 : v === "1Gi" ? 1024 : 0));
+
+    coreApi.listNamespacedPod.mockResolvedValueOnce({
+      items: [
+        {
+          metadata: { name: "p1" },
+          spec: { containers: [{ resources: { limits: { cpu: "500m", memory: "1Gi" } } }] },
+        },
+      ],
+    });
+    metricsApi.getPodMetrics.mockResolvedValueOnce({
+      items: [
+        {
+          metadata: { name: "p1" },
+          containers: [{ usage: { cpu: "100m", memory: "256Mi" } }],
+        },
+      ],
+    });
+
+    const req = { query: { service: ["ns", "app"] } };
+    const res = createMockRes();
+
+    await handler(req, res);
+
+    expect(res.statusCode).toBe(200);
+    expect(res.body.stats.cpu).toBeCloseTo(0.1);
+    expect(res.body.stats.mem).toBe(256);
+    expect(res.body.stats.cpuUsage).toBeCloseTo(20);
+    expect(res.body.stats.memUsage).toBeCloseTo(25);
+  });
+});