'Expect' assertion to check the element's absence doesn't work

[sureshautomation]

hi, i have created custom commands for existence assertion using .expect()

Below is the command sample:
Cypress.Commands.add('isExist', (element, elementName, exist = true, wait = 10000) => {
if (exist) {
cy.xpath(element, {timeout: wait}).then((e) => {
expect(e, elementName).to.exist;
});
} else {
cy.xpath(element, {timeout: wait}).then((e) => {
expect(e, elementName).not.to.exist;
});
}
});

then i use it like below
cy.isExist('locator', 'locatorName', true, 12000);

now, it works correctly when 'exist' is true but it fails when 'exist' is false.
for ex: cy.isExist('locator', 'locatorName', false); ---> this line throws below error

AssertionError
Timed out retrying: Expected to find element: undefined, but never found it.

my concern is, this element is not gonna be exist in the DOM and i am already asserting that the element is not exist, then why is it failing with the reason as "Timed out retrying"?

[bahmutov]

The cy.xpath already checks if the element exists, thus by the time you get the element it is too late. You might want to write your own xpath command this such option following the blog post https://glebbahmutov.com/blog/writing-custom-cypress-command/

[sureshautomation]

thanks for your response. but am not facing this issue when i use cy.xpath(locator).should('not.exist'). i get the error only when i assert with 'expect'

[sureshautomation]

just an update.
i have updated then(e) with should(e), then it is working as expected and no timeout error shown.
cy.xpath(element, {timeout: wait}).should((e) => {
expect(e, elementName).not.to.exist;
});

[bahmutov]

Perfect

…

Sent from my iPhone

On Jan 20, 2021, at 11:02, sureshautomation ***@***.***> wrote:  just an update. i have update then(e) with should(e), then it is working as expected and no timeout error shown. cy.xpath(element, {timeout: wait}).should((e) => { expect(e, elementName).not.to.exist; }); — You are receiving this because you commented. Reply to this email directly, view it on GitHub, or unsubscribe.