  @Test
  public void wrongCodeVerifierValue() throws Exception {

    String codeVerifierValue = "::code::";
    byte[] hashedCodeChallenge = MessageDigest.getInstance("SHA-256").digest(codeVerifierValue.getBytes(StandardCharsets.UTF_8));
    String transformedCodeChallenge = BaseEncoding.base64Url().encode(hashedCodeChallenge);

    CodeChallenge codeChallenge = new CodeChallenge(transformedCodeChallenge, "S256");

    assertFalse(codeVerifier.verify(codeChallenge, "::codee::"));
  }