Function toggleValidationCss

test/angular/1.7/angular.js:25160–25165

(ctrl, validationErrorKey, isValid)

  }

  function toggleValidationCss(ctrl, validationErrorKey, isValid) {
    validationErrorKey = validationErrorKey ? '-' + snake_case(validationErrorKey, '-') : '';

    cachedToggleClass(ctrl, VALID_CLASS + validationErrorKey, isValid === true);
    cachedToggleClass(ctrl, INVALID_CLASS + validationErrorKey, isValid === false);
  }
}

function isObjectEmpty(obj) {