Full cleanup pass

tests/unit/api/health.route.test.ts

@@ -0,0 +1,81 @@
+import { NextRequest } from "next/server";
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+const isDatabaseConfiguredMock = vi.fn();
+const queryRawMock = vi.fn();
+
+vi.mock("../../../lib/server/env", () => ({
+  isDatabaseConfigured: () => isDatabaseConfiguredMock(),
+}));
+
+vi.mock("../../../lib/server/db", () => ({
+  prisma: {
+    $queryRaw: (...args: unknown[]) => queryRawMock(...args),
+  },
+}));
+
+import { GET } from "../../../app/api/health/route";
+
+beforeEach(() => {
+  isDatabaseConfiguredMock.mockReset();
+  queryRawMock.mockReset();
+});
+
+describe("GET /api/health", () => {
+  it("returns not_configured when DATABASE_URL is unset", async () => {
+    isDatabaseConfiguredMock.mockReturnValue(false);
+    const res = await GET(
+      new NextRequest("https://x.test/api/health"),
+      undefined,
+    );
+    expect(res.status).toBe(200);
+    expect(await res.json()).toEqual({
+      ok: true,
+      database: "not_configured",
+    });
+    expect(res.headers.get("x-request-id")).toBeTruthy();
+    expect(queryRawMock).not.toHaveBeenCalled();
+  });
+
+  it("returns connected when the database probe succeeds", async () => {
+    isDatabaseConfiguredMock.mockReturnValue(true);
+    queryRawMock.mockResolvedValueOnce([{ "?column?": 1 }]);
+    const res = await GET(
+      new NextRequest("https://x.test/api/health"),
+      undefined,
+    );
+    expect(res.status).toBe(200);
+    expect(await res.json()).toEqual({
+      ok: true,
+      database: "connected",
+    });
+    expect(queryRawMock).toHaveBeenCalled();
+    expect(res.headers.get("x-request-id")).toBeTruthy();
+  });
+
+  it("returns 503 with database error when the probe fails", async () => {
+    isDatabaseConfiguredMock.mockReturnValue(true);
+    queryRawMock.mockRejectedValueOnce(new Error("connection refused"));
+    const res = await GET(
+      new NextRequest("https://x.test/api/health"),
+      undefined,
+    );
+    expect(res.status).toBe(503);
+    expect(await res.json()).toEqual({
+      ok: false,
+      database: "error",
+    });
+    expect(res.headers.get("x-request-id")).toBeTruthy();
+  });
+
+  it("forwards an incoming x-request-id on the response", async () => {
+    isDatabaseConfiguredMock.mockReturnValue(false);
+    const res = await GET(
+      new NextRequest("https://x.test/api/health", {
+        headers: { "x-request-id": "req_health-1" },
+      }),
+      undefined,
+    );
+    expect(res.headers.get("x-request-id")).toBe("req_health-1");
+  });
+});