import { describe, expect, it, vi, afterEach } from "vitest";
import { getBuildInfo } from "../src/utils/buildInfo";

const originalEnv = { ...process.env };

afterEach(() => {
  process.env = { ...originalEnv };
  vi.restoreAllMocks();
});

describe("getBuildInfo", () => {
  it("uses env vars when provided", () => {
    process.env.APP_VERSION = "3.0.0";
    process.env.APP_COMMIT = "xyz";
    const info = getBuildInfo();
    expect(info.version).toBe("3.0.0");
    expect(info.commit).toBe("xyz");
    expect(new Date(info.buildTime).toString()).not.toBe("Invalid Date");
  });

  it("falls back to git when env missing", () => {
    const gitReader = vi.fn().mockReturnValue("abcdef");
    delete process.env.APP_COMMIT;
    const info = getBuildInfo(gitReader);
    expect(info.commit).toBe("abcdef");
  });
});