{1574812326.000, false},
		{time.Duration(3) * time.Minute, false},
	}

	for _, testCase := range testCases {
		testCase := testCase
		t.Run("", func(t *testing.T) {
			_, err := ExpToInt64(testCase.exp)
			if err != nil && !testCase.expectedFailure {
				t.Errorf("Expected success but got failure %s", err)
			}
			if err == nil && testCase.expectedFailure {
				t.Error("Expected failure but got success")

	expStr := claims["exp"]
	if expStr == "" {
		return ErrTokenExpired
	}

	// No custom duration requested, the claims can be used as is.
	if dsecs == "" {
		return nil
	}

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

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