import { describe, expect, it } from "vitest";

import { findViteDynamicRouteChunk } from "../../scripts/lib/vite-route-chunks.ts";

describe("Vite route chunk identity", () => {
  it("recognizes a governed manual chunk referenced by an entry dynamic import", () => {
    const manifest = {
      "_route-tech-log-home-abc.js": {
        file: "assets/route-tech-log-home-abc.js",
        name: "route-tech-log-home",
      },
      "index.html": {
        file: "assets/index.js",
        name: "index",
        isEntry: true,
        dynamicImports: ["_route-tech-log-home-abc.js"],
      },
    };

    expect(findViteDynamicRouteChunk(manifest, "route-tech-log-home")).toEqual({
      file: "assets/route-tech-log-home-abc.js",
      name: "route-tech-log-home",
    });
  });

  it("retains Vite native dynamic-entry support", () => {
    const manifest = {
      "src/page.tsx": {
        file: "assets/page.js",
        name: "route-page",
        isDynamicEntry: true,
      },
    };

    expect(findViteDynamicRouteChunk(manifest, "route-page")?.file).toBe(
      "assets/page.js",
    );
  });

  it("rejects a named chunk that is not dynamically reachable", () => {
    const manifest = {
      "_route-tech-log-home-abc.js": {
        file: "assets/route-tech-log-home-abc.js",
        name: "route-tech-log-home",
      },
      "index.html": {
        file: "assets/index.js",
        name: "index",
        isEntry: true,
      },
    };

    expect(findViteDynamicRouteChunk(manifest, "route-tech-log-home")).toBeUndefined();
  });
});