import { describe, expect, it } from "vitest";
import { exportCorpusFiles } from "../../src/lab/corpus";
import {
  formatSignatures,
  identifyBySignature,
} from "../../src/lab/signatures";

describe("format signatures and corpus", () => {
  it("distinguishes masked RIFF forms and container-only evidence", () => {
    const wav = Uint8Array.of(
      0x52,
      0x49,
      0x46,
      0x46,
      0x24,
      0,
      0,
      0,
      0x57,
      0x41,
      0x56,
      0x45,
    );
    expect(identifyBySignature(wav).map((item) => item.format)).toContain(
      "wav",
    );
    expect(identifyBySignature(wav).map((item) => item.format)).not.toContain(
      "webp",
    );
    expect(
      identifyBySignature(Uint8Array.of(0x50, 0x4b, 0x03, 0x04))[0],
    ).toMatchObject({ format: "zip", confidence: "container" });
  });

  it("ships a broad, deterministic structured regression corpus", () => {
    expect(formatSignatures.length).toBeGreaterThanOrEqual(20);
    const first = exportCorpusFiles();
    expect(first).toEqual(exportCorpusFiles());
    expect(first.map((file) => file.path)).toEqual(
      expect.arrayContaining([
        "structured/typed.json",
        "structured/text-cells.csv",
        "corpus-manifest.json",
      ]),
    );
  });
});