paperclip/server/src/__tests__/app-vite-dev-routing.test.ts

import { describe, expect, it } from "vitest";
import type { Request } from "express";
import { shouldServeViteDevHtml } from "../app.js";

function createRequest(path: string, acceptsResult: string | false): Request {
  return {
    path,
    accepts: () => acceptsResult,
  } as unknown as Request;
}

describe("shouldServeViteDevHtml", () => {
  it("serves HTML shell for document requests", () => {
    expect(shouldServeViteDevHtml(createRequest("/", "html"))).toBe(true);
    expect(shouldServeViteDevHtml(createRequest("/issues/abc", "html"))).toBe(true);
  });

  it("skips public assets even when the client accepts */*", () => {
    expect(shouldServeViteDevHtml(createRequest("/sw.js", "html"))).toBe(false);
    expect(shouldServeViteDevHtml(createRequest("/site.webmanifest", "html"))).toBe(false);
  });

  it("skips vite asset requests", () => {
    expect(shouldServeViteDevHtml(createRequest("/@vite/client", "html"))).toBe(false);
    expect(shouldServeViteDevHtml(createRequest("/src/main.tsx", "html"))).toBe(false);
  });
});