cucumber-protractor/uiTestHelpers/stepDefinitions/checks/checkAttribute.js

POM CukeTractor - Bootstrap your cucumber tests with cucumber, protractor and a structured way of creating page objects and component objects

module.exports = function checkAttribute(locatorKey, expectedAttribute, expectedValue) {
  return this.getCurrentPage()
    .getElementWhenInDOM(locatorKey)
    .then((element) => element.getAttribute(expectedAttribute))
    .then((value) => expect(value).to.equal(expectedValue));
};