_, _, s3Err = checkKeyValid(req, "does-not-exist")
	if s3Err != ErrInvalidAccessKeyID {
		t.Fatalf("Expected error 'ErrInvalidAccessKeyID', found %v", s3Err)
	}

	ucreds, err := auth.CreateCredentials("myuser1", "mypassword1")
	if err != nil {
		t.Fatalf("unable create credential, %s", err)
	}

	_, err = globalIAMSys.CreateUser(ctx, ucreds.AccessKey, madmin.AddOrUpdateUserReq{
		SecretKey: ucreds.SecretKey,

	}{
		{"", "", ErrInvalidAccessKeyID},
		{"admin", "", ErrSignatureDoesNotMatch},
		{"admin", "wrongpassword", ErrSignatureDoesNotMatch},
		{"wronguser", "mypassword", ErrInvalidAccessKeyID},
		{"", "mypassword", ErrInvalidAccessKeyID},
		{"admin", "mypassword", ErrNone},
	}

	for i, testCase := range testCases {
		req := mustNewRequest(http.MethodGet, "http://localhost:9000/", 0, nil, t)

              }

              println("Authenticating for response: $response")
              println("Challenges: ${response.challenges()}")
              val credential = Credentials.basic("jesse", "password1")
              return response.request.newBuilder()
                  .header("Authorization", credential)
                  .build()
            }
          })
          .build()

      fun run() {