Failing To Check if Element is Disabled - angularjs

Question

I have a dropdown with elements that get disabled when conditions are met. In the test, I check them for being disabled, but all tests fail and always return the element state as enabled (Clearly incorrectly. I have ensured that this is not a timing issue - refreshed the page and gave ample wait time with browser sleep - the elements are clearly disabled on the screen). There is an anchor within a list item. Please see image:
I have tried checking both the list item and the anchor, like so:
var actionDropDownList = $$('[class="dropdown-menu"]').get(1);
var checkOutButtonState = actionDropDownList.all(by.tagName('li')).get(6);
actionsButton.click();
actionDropDownList.all(by.tagName('li')).count().then(function(count){
console.log('THE NUMBER OF ELEMENTS IN THE DROPDOWN IS...............................................................' + count);
}) //verify that I have the correct dropdown - yes
checkOutButtonState.isEnabled().then(function(isEnabled){
console.log('CHECKING checkOutButton BUTTON STATE: ' + isEnabled);
}) //log state - shows incorrectly
I have also tried checking the button itself for disabled state (the element below is what I tried checking instead of the list element):
var checkOutButton = $('[ng-click="item.statusId !== itemStatus.in || checkOut()"]');
This failed as well.
Not sure which one I should check and why both are failing. How do I correct this and get it to show that the disabled button is...well, disabled.
TEMPORARY ADD ON EDIT:
For simplicity's sake, I am trying:
var hasClass = function (element, cls) {
return element.getAttribute('class').then(function (classes) {
return classes.split(' ').indexOf(cls) !== -1;
});
var checkOutButtonState = actionDropDownList.all(by.tagName('li')).get(6);
expect(hasClass(checkOutButtonState, 'disabled')).toBe(true);
It still fails, however, despite the element clearly having the class. Alec - your solution throws "function is not defined," I am not sure if I need something else for it to see jasmine. Tried, but can't find anything wrong with it, not sure why I can't get it to work.
Edit:
If I run...since it only appears to have one class:
expect(checkOutButtonState.getAttribute('class')).toBe('disabled');
I get "expected 'ng-isolate-scope' to be 'disabled'"

Answer 1

In a quite similar situation I've ended up checking the presence of disabledclass:
expect(checkOutButtonState).toHaveClass("disabled");
Where toHaveClass() is a custom jasmine matcher:
beforeEach(function() {
jasmine.addMatchers({
toHaveClass: function() {
return {
compare: function(actual, expected) {
return {
pass: actual.getAttribute("class").then(function(classes) {
return classes.split(" ").indexOf(expected) !== -1;
})
};
}
};
},
});
});