duration: time.Duration(901) * time.Second,
		},
	}

	for i, testCase := range testCases {
		u, err := url.Parse(testCase.reqURL)
		if err != nil {
			t.Fatal(err)
		}
		d, err := GetDefaultExpiration(u.Query().Get("DurationSeconds"))
		gotErr := (err != nil)
		if testCase.expectErr != gotErr {
			t.Errorf("Test %d: Expected %v, got %v with error %s", i+1, testCase.expectErr, gotErr, err)
		}

	if dsecs == "" {
		return nil
	}

	if _, err := auth.ExpToInt64(expStr); err != nil {
		return err
	}

	defaultExpiryDuration, err := GetDefaultExpiration(dsecs)
	if err != nil {
		return err
	}

	claims["exp"] = time.Now().UTC().Add(defaultExpiryDuration).Unix() // update with new expiry.
	return nil
}

const (
	audClaim = "aud"