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

import { classifyViteJavascript } from "../../scripts/lib/classify-vite-bundle.mjs";

describe("Vite bundle classification", () => {
  it("counts transitive static imports as initial and keeps dynamic chunks lazy", () => {
    expect(
      classifyViteJavascript({
        "index.html": {
          file: "assets/entry.js",
          isEntry: true,
          imports: ["_shared.js"],
        },
        "_shared.js": { file: "assets/shared.js", imports: ["_runtime.js"] },
        "_runtime.js": { file: "assets/runtime.js" },
        "src/lazy.js": { file: "assets/lazy.js" },
      }),
    ).toEqual({
      initialFiles: [
        "assets/entry.js",
        "assets/runtime.js",
        "assets/shared.js",
      ],
      lazyFiles: ["assets/lazy.js"],
      missingImports: [],
    });
  });

  it("reports a manifest import that cannot be resolved", () => {
    expect(
      classifyViteJavascript({
        "index.html": {
          file: "assets/entry.js",
          isEntry: true,
          imports: ["_missing.js"],
        },
      }).missingImports,
    ).toEqual(["_missing.js"]);
  });
});