import { describe, expect, it } from "vitest";
import {
  base32ToBytes,
  base64UrlToBytes,
  bytesToBase32,
  bytesToBase64Url,
  bytesToHex,
  hexToBytes,
  utf8ToBytes,
} from "../../src/crypto/encoding";

describe("encoding", () => {
  it("round-trips RFC 4648-style encodings", () => {
    const bytes = utf8ToBytes("Hello!\u{1f512}");
    expect([...base32ToBytes(bytesToBase32(bytes))]).toEqual([...bytes]);
    expect([...base64UrlToBytes(bytesToBase64Url(bytes))]).toEqual([...bytes]);
    expect([...hexToBytes(bytesToHex(bytes))]).toEqual([...bytes]);
  });

  it("rejects non-zero trailing Base32 bits", () => {
    expect(() => base32ToBytes("AB")).toThrow(/trailing bits/iu);
  });

  it("accepts deliberate manual separators only when enabled", () => {
    expect(() => base32ToBytes("JBSW Y3DP")).toThrow();
    expect([...base32ToBytes("JBSW-Y3DP", { allowSeparators: true })]).toEqual([
      ...utf8ToBytes("Hello"),
    ]);
  });
});