TeleUploader/test/health.test.js

import { describe, it, expect, mock, beforeEach } from "bun:test";

// Mock database layer
const mockExecute = mock(() => Promise.resolve());

mock.module("../src/db/index.js", () => ({
  db: {
    execute: mockExecute
  }
}));

describe("Health Route Handler", () => {
  let handleHealth;

  beforeEach(async () => {
    mockExecute.mockClear();
    const healthRoute = await import("../src/routes/health.js");
    handleHealth = healthRoute.handleHealth;
  });

  it("should return status 200 and ok when DB is healthy", async () => {
    const req = new Request("http://localhost:3000/health");
    const res = await handleHealth(req);

    expect(res.status).toBe(200);
    const body = await res.json();
    expect(body).toEqual({ status: "ok" });
    expect(mockExecute).toHaveBeenCalled();
  });

  it("should return status 500 and error details when DB health check fails", async () => {
    mockExecute.mockImplementationOnce(() => Promise.reject(new Error("DB Connection Failed")));
    const req = new Request("http://localhost:3000/health");
    const res = await handleHealth(req);

    expect(res.status).toBe(500);
    const body = await res.json();
    expect(body.status).toBe("error");
    expect(body.error).toBe("DB Connection Failed");
  });
});