import sharp from "sharp";
import { describe, expect, it } from "vitest";
import { inspectImage } from "./inspect";

describe("image decoding before publication", () => {
  it("accepts real decoded image dimensions", async () => {
    const bytes = await sharp({ create: { width: 8, height: 12, channels: 3, background: "red" } }).png().toBuffer();
    await expect(inspectImage(bytes, "image/png")).resolves.toEqual({ width: 8, height: 12 });
    await expect(inspectImage(bytes, "image/jpeg")).rejects.toMatchObject({ status: 422 });
    await expect(inspectImage(bytes.subarray(0, 40), "image/png")).rejects.toMatchObject({ status: 422 });
  });
  it("rejects a magic-byte-only fake", async () => {
    await expect(inspectImage(Uint8Array.from([137, 80, 78, 71, 13, 10, 26, 10]), "image/png"))
      .rejects.toMatchObject({ status: 422 });
  });
});