// @vitest-environment node

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

import { AttachmentValidationError, validateAttachmentUpload } from "@/lib/chat/attachments";

describe("attachment validation", () => {
  it("rejects an executable renamed as PDF", async () => {
    const file = new File([new Uint8Array([0x4d, 0x5a])], "invoice.pdf", {
      type: "application/pdf",
    });

    await expect(validateAttachmentUpload(file)).rejects.toBeInstanceOf(
      AttachmentValidationError,
    );
  });

  it("accepts a plain text attachment and normalizes its name", async () => {
    const attachment = await validateAttachmentUpload(
      new File(["brief"], "../brief.txt", { type: "text/plain" }),
    );

    expect(attachment).toMatchObject({ name: "brief.txt", contentType: "text/plain", size: 5 });
  });
});