I'm trying to test if an element is visible using protractor. Here's what the element looks like:
<i class="icon-spinner icon-spin ng-hide" ng-show="saving"></i>
When in the chrome console, I can use this jQuery selector to test if the element is visible:
$('[ng-show=saving].icon-spin')
[
<i class=?"icon-spinner icon-spin ng-hide" ng-show=?"saving">?</i>?
]
> $('[ng-show=saving].icon-spin:visible')
[]
However, when I try to do the same in protractor, I get this error at runtime:
InvalidElementStateError:
invalid element state: Failed to execute 'querySelectorAll' on 'Document':
'[ng-show=saving].icon-spin:visible' is not a valid selector.
Why is this not valid? How can I check for visibility using protractor?
This question is related to
angularjs
visible
protractor
If there are multiple elements in DOM with same class name. But only one of element is visible.
element.all(by.css('.text-input-input')).filter(function(ele){
return ele.isDisplayed();
}).then(function(filteredElement){
filteredElement[0].click();
});
In this example filter takes a collection of elements and returns a single visible element using isDisplayed().
.isDisplayed()
assumes the element is present (exists in the DOM)
so if you do
expect($('[ng-show=saving]').isDisplayed()).toBe(true);
but the element is not present, then instead of graceful failed expectation, $('[ng-show=saving]').isDisplayed()
will throw an error causing the rest of it
block not executed
If you assume, the element you're checking may not be present for any reason on the page, then go with a safe way below
/**
* element is Present and is Displayed
* @param {ElementFinder} $element Locator of element
* @return {boolean}
*/
let isDisplayed = function ($element) {
return (await $element.isPresent()) && (await $element.isDisplayed())
}
and use
expect(await isDisplayed( $('[ng-show=saving]') )).toBe(true);
Here are the few code snippet which can be used for framework which use Typescript, protractor, jasmine
browser.wait(until.visibilityOf(OversightAutomationOR.lblContentModal), 3000, "Modal text is present");
// Asserting a text
OversightAutomationOR.lblContentModal.getText().then(text => {
this.assertEquals(text.toString().trim(), AdminPanelData.lblContentModal);
});
// Asserting an element
expect(OnboardingFormsOR.masterFormActionCloneBtn.isDisplayed()).to.eventually.equal(true
);
OnboardingFormsOR.customFormActionViewBtn.isDisplayed().then((isDisplayed) => {
expect(isDisplayed).to.equal(true);
});
// Asserting a form
formInfoSection.getText().then((text) => {
const vendorInformationCount = text[0].split("\n");
let found = false;
for (let i = 0; i < vendorInformationCount.length; i++) {
if (vendorInformationCount[i] === customLabel) {
found = true;
};
};
expect(found).to.equal(true);
});
This answer will be robust enough to work for elements that aren't on the page, therefore failing gracefully (not throwing an exception) if the selector failed to find the element.
const nameSelector = '[data-automation="name-input"]';
const nameInputIsDisplayed = () => {
return $$(nameSelector).count()
.then(count => count !== 0)
}
it('should be displayed', () => {
nameInputIsDisplayed().then(isDisplayed => {
expect(isDisplayed).toBeTruthy()
})
})
I had a similar issue, in that I only wanted return elements that were visible in a page object. I found that I'm able to use the css :not
. In the case of this issue, this should do you...
expect($('i.icon-spinner:not(.ng-hide)').isDisplayed()).toBeTruthy();
In the context of a page object, you can get ONLY those elements that are visible in this way as well. Eg. given a page with multiple items, where only some are visible, you can use:
this.visibileIcons = $$('i.icon:not(.ng-hide)');
This will return you all visible i.icon
s
To wait for visibility
const EC = protractor.ExpectedConditions;
browser.wait(EC.visibilityOf(element(by.css('.icon-spinner icon-spin ng-hide')))).then(function() {
//do stuff
})
Xpath trick to only find visible elements
element(by.xpath('//i[not(contains(@style,"display:none")) and @class="icon-spinner icon-spin ng-hide"]))
The correct way for checking the visibility of an element with Protractor is to call the isDisplayed
method. You should be careful though since isDisplayed
does not return a boolean, but rather a promise
providing the evaluated visibility. I've seen lots of code examples that use this method wrongly and therefore don't evaluate its actual visibility.
Example for getting the visibility of an element:
element(by.className('your-class-name')).isDisplayed().then(function (isVisible) {
if (isVisible) {
// element is visible
} else {
// element is not visible
}
});
However, you don't need this if you are just checking the visibility of the element (as opposed to getting it) because protractor patches Jasmine expect() so it always waits for promises to be resolved. See github.com/angular/jasminewd
So you can just do:
expect(element(by.className('your-class-name')).isDisplayed()).toBeTruthy();
Since you're using AngularJS
to control the visibility of that element, you could also check its class attribute for ng-hide
like this:
var spinner = element.by.css('i.icon-spin');
expect(spinner.getAttribute('class')).not.toMatch('ng-hide'); // expect element to be visible
element(by.className('your-class-name')).isDisplayed().then(function (isVisible) {
if (isVisible) {
// element is visible
} else {
// element is not visible
}
}).catch(function(err){
console.log("Element is not found");
})
Source: Stackoverflow.com