import { describe, expect, it } from "vitest";
import { epubFileName } from "./EpubReader";
import { pdfWorkerSrc } from "./pdfWorker";
import { readerErrorMessage } from "./ReaderError";

describe("reader runtime helpers", () => {
  it("extracts an EPUB file name from the file URL", () => {
    expect(epubFileName("http://readabook.local/books/12/file?token=abc")).toBe("book.epub");
    expect(epubFileName("http://readabook.local/files/example.epub")).toBe("example.epub");
  });

  it("keeps PDF.js worker source on the bundled module worker", () => {
    expect(pdfWorkerSrc).toContain("pdf.worker.min.mjs");
  });

  it("normalizes reader technical errors", () => {
    expect(readerErrorMessage(new Error("Setting up fake worker failed"), "PDF indisponible")).toBe("Setting up fake worker failed");
    expect(readerErrorMessage("", "EPUB indisponible")).toBe("EPUB indisponible");
  });
});